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Li J, Wang Y, Ma Y, Zheng N, Liu J, Liu T. Preparation and characterization of chitosan-based corn protein composites constructed with TG enzyme and their preservation performance on strawberries. Int J Biol Macromol 2024; 270:132190. [PMID: 38723820 DOI: 10.1016/j.ijbiomac.2024.132190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 04/18/2024] [Accepted: 05/06/2024] [Indexed: 05/20/2024]
Abstract
This study describes the synthesis of Chitosan - corn protein (CSZ-TG) composites using TG enzyme (TG) as a cross-linking agent and the preparation of chitosan-based composite membrane material (CSZEO-TG) by blending citrus essential oil (EO) with the synthesized CSZ-TG. The prepared composite membrane material was used for fresh strawberry preservation and characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, X-spectral diffraction, tensile properties, and water vapor and CO2 permeability. Scanning electron microscopy results showed a smooth surface of the composite membrane material after the addition of TG enzyme, while Fourier transforms infrared spectroscopy results showed a structural change of the composite membrane material after the addition of corn protein (Z). The tensile results showed an increase in the tensile strength of the composite membrane material after the addition of TG enzyme, while the flexibility of the composite membrane material was enhanced after the addition of EO. Compared with the pure chitosan membrane (CS), the water vapor and CO2 barrier properties of the composite membrane material after the addition of Z, TG, and EO did not change much, and they all showed better water vapor barrier properties. The results of the antioxidant analysis of the solution of the CSZEO-TG composite membrane material showed that the composite membrane material had efficient antioxidant properties. The effects of the composite film material on the storage period and quality of strawberries were evaluated by the indicators of weight loss, hardness, decay rate, soluble solids, titratable acid content, MDA content, and the content of four enzymes, SOD, POD, PPO and CAT. Comprehensive freshness data analysis showed that CSZEO-TG had the best freshness preservation performance and effectively extended the shelf life of strawberries.
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Affiliation(s)
- Junbo Li
- College of Food Science and Engineering, Changchun University, No.6543 Satellite Road, 130022 Changchun, China
| | - Yue Wang
- College of Food Science and Engineering, Changchun University, No.6543 Satellite Road, 130022 Changchun, China
| | - Yaomei Ma
- College of Food Science and Engineering, Changchun University, No.6543 Satellite Road, 130022 Changchun, China
| | - Nan Zheng
- College of Food Science and Engineering, Changchun University, No.6543 Satellite Road, 130022 Changchun, China
| | - Jiaxin Liu
- Jilin Province Product Quality Supervision and Inspection Institute, 130012 Changchun, China
| | - Tong Liu
- College of Food Science and Engineering, Changchun University, No.6543 Satellite Road, 130022 Changchun, China.
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2
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Bai X, Chen Y, Zhou T, Pow EHN, Tsoi JKH. The chemical and optical stability evaluation of injectable restorative materials under wet challenge. J Dent 2024; 146:105031. [PMID: 38710315 DOI: 10.1016/j.jdent.2024.105031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 04/08/2024] [Accepted: 04/27/2024] [Indexed: 05/08/2024] Open
Abstract
OBJECTIVES To investigate and compare the chemical and optical stability of four restorative composite materials: two injectable resins, one flowable resin and one compomer. METHODS Two injectable nano-filled composite resins: G-aenial Universal (GU) and Beautifil Injectable XSL (BI), a flowable composite resin: Filtek Supreme Flowable (FS) and a compomer: Dyract Flow (DF), in A2 shade were tested and compared. Water sorption and solubility were conducted according to ISO4049:2019 standard; ICP-OES and F-ion selective electrode were used to test the elemental release; Degree of conversion (DC) was obtained by using FTIR; water contact angle was obtained by static sessile drop method, and a spectrophotometer was used for optical properties (ΔE⁎, ΔL⁎ and TP). SPSS 28.0 was used for statistical analysis and the significant level was pre-set as α = 0.05. RESULTS GU performed the best in water sorption and solubility, FS had the lowest elemental release, the best colour stability, and the highest DCIM and DC24-h. DF, the compomer had the lowest, and GU and BI, the injectable composites had the largest water contact angle, respectively. Correlations were found between water sorption and water solubility. CONCLUSIONS The four composite restorative materials showed different chemical and optical behaviours. Overall, composite resins performed better than compomer, while additional laboratory and in vivo tests are necessary to obtain a more comprehensive comparison between injectable and flowable composite resins. Wsp and Wsl are influenced by many common factors, and the values are highly positively related. CLINICAL SIGNIFICANCE A comprehensive understanding of materials is crucial before selecting materials for clinical practice. Composite resins rather than compomers are recommended because of their exceptional properties, which make them eligible for a wide range of clinical applications and an elongated lifespan.
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Affiliation(s)
- Xuedong Bai
- Dental Materials Science, Applied Oral Sciences and Community Dental Care, Faculty of Dentistry, The University of Hong Kong, Hong Kong Special Administrative Region, PR China
| | - Yanning Chen
- Dental Materials Science, Applied Oral Sciences and Community Dental Care, Faculty of Dentistry, The University of Hong Kong, Hong Kong Special Administrative Region, PR China
| | - Tianyu Zhou
- Dental Materials Science, Applied Oral Sciences and Community Dental Care, Faculty of Dentistry, The University of Hong Kong, Hong Kong Special Administrative Region, PR China
| | - Edmond Ho Nang Pow
- Prosthodontics, Restorative Dental Sciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong Special Administrative Region, PR China
| | - James Kit Hon Tsoi
- Dental Materials Science, Applied Oral Sciences and Community Dental Care, Faculty of Dentistry, The University of Hong Kong, Hong Kong Special Administrative Region, PR China.
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Zhang H, Wang F, Lin J, Hua J. Lamb wave-based damage assessment for composite laminates using a deep learning approach. Ultrasonics 2024; 141:107333. [PMID: 38692213 DOI: 10.1016/j.ultras.2024.107333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 04/11/2024] [Accepted: 04/24/2024] [Indexed: 05/03/2024]
Abstract
With the increasing utilization of composite materials due to their superior properties, the need for efficient structural health monitoring techniques rises rapidly to ensure the integrity and reliability of composite structures. Deep learning approaches have great potential applications for Lamb wave-based damage detection. However, it remains challenging to quantitatively detect and characterize damage such as delamination in multi-layered structures. These deep learning architectures still lack a certain degree of physical interpretability. In this study, a convolutional sparse coding-based UNet (CSCUNet) is proposed for ultrasonic Lamb wave-based damage assessment in composite laminates. A low-resolution image is generated using delay-and-sum algorithm based on Lamb waves acquired by transducer array. The encoder-decoder framework in the proposed CSCUNet enables the transformation of low-resolution input image to high-resolution damage image. In addition, the multi-layer convolutional sparse coding block is introduced into encoder of the CSCUNet to improve both performance and interpretability of the model. The proposed method is tested on both numerical and experimental data acquired on the surface of composite specimen. The results demonstrate its effectiveness in identifying the delamination location, size, and shape. The network has powerful feature extraction capability and enhanced interpretability, enabling high-resolution imaging and contour evaluation of composite material damage.
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Affiliation(s)
- Han Zhang
- Institute of Mechanics and Acoustics, National Institute of Metrology, Beijing 100029, China
| | - Fan Wang
- CISDI Group Co., Ltd., No.1 Shuanggang Road, Yuzhong District, Chongqing 400013, China
| | - Jing Lin
- Advanced Manufacturing Center, Ningbo Institute of Technology, Beihang University, Ningbo 315100, China; Science & Technology on Reliability and Environmental Engineering Laboratory, Beihang University, Xueyuan Road No. 37, Haidian District, Beijing 100191, China
| | - Jiadong Hua
- Advanced Manufacturing Center, Ningbo Institute of Technology, Beihang University, Ningbo 315100, China; Science & Technology on Reliability and Environmental Engineering Laboratory, Beihang University, Xueyuan Road No. 37, Haidian District, Beijing 100191, China.
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4
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Salah Adeen Embirsh H, Vuksanović MM, Mladenović IO, Knežević N, Milošević M, Mijatov S, Jančić Heinemann R, Marinković A. UNSATURATED POLYESTER RESIN BASED COMPOSITES: A CASE STUDY OF LIGNIN VALORISATION. Chemosphere 2024:142144. [PMID: 38677615 DOI: 10.1016/j.chemosphere.2024.142144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 04/14/2024] [Accepted: 04/24/2024] [Indexed: 04/29/2024]
Abstract
Materials from green resources boast a low carbon footprint, forming the foundation of the circular economy approach in materials science. Thus, in this study, waste poly(ethylene terephthalate) (PET) was subjected to depolymerization using propylene glycol (PG), and subsequent polycondensation with bio-based maleic anhydride (MA) produced unsaturated polyester resin (b-UPR). Bio-derived acryloyl-modified Kraft lignin (KfL-A) served as a vinyl reactive filler in the b-UPR matrix to create b-UPR/KfL-A composites. The structural characterization of KfL-A and b-UPR involved the use of FTIR and NMR techniques. The mechanical properties of the newly fabricated composites were assessed through tensile strength, Vickers microhardness, and dynamic mechanical tests. The addition of KfL-A to the rigid b-UPR matrix enhanced material flexibility, resulting in less stiff and hard materials while preserving composite toughness. For instance, incorporating 10 wt.% of KfL-A in b-UPR led to a 17% reduction in hardness, a 48% decrease in tensile strength, and a 20% reduction in toughness. Positive environmental impact was achieved by incorporation of 64 wt.% of renewable and recycled raw material. Analogously prepared b-UPR/KfL composites showed structural inhomogeneity and somewhat better mechanical properties. Transmission (TEM) and scanning (SEM) electron microscopies revealed a suitable relationship between mechanical and structural properties of composites in relation to the extent of KfL-A addition. The UL94V flammability rating confirmed that flame resistance increased proportionally with the KfL-A addition. Once deposited in a landfill, these composites are expected to disintegrate more easily than PET, causing less harm to the environment and contributing to sustainability in the plastics cycle.
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Affiliation(s)
| | - Marija M Vuksanović
- University of Belgrade, Department of Chemical Dynamics and Permanent Education, VINČA Institute of Nuclear Sciences - National Institute of the Republic of Serbia, 11351 Belgrade, Serbia.
| | - Ivana O Mladenović
- University of Belgrade, Institute of Chemistry, Technology and Metallurgy, National Institute of the Republic of Serbia, 11000, Belgrade, Serbia.
| | - Nataša Knežević
- University of Belgrade, Department of Chemical Dynamics and Permanent Education, VINČA Institute of Nuclear Sciences - National Institute of the Republic of Serbia, 11351 Belgrade, Serbia.
| | - Milena Milošević
- University of Belgrade, Institute of Chemistry, Technology and Metallurgy, National Institute of the Republic of Serbia, 11000, Belgrade, Serbia.
| | | | | | - Aleksandar Marinković
- University of Belgrade, Faculty of Technology and Metallurgy, 11120 Belgrade, Serbia.
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Chen L, Zhu J, Song J, Yang J, Niu Y, Zhao D. Catalytic degradation of rhodamine B by titanium dioxide doped polydopamine photoresponsive composites. Int J Biol Macromol 2024; 259:129405. [PMID: 38219944 DOI: 10.1016/j.ijbiomac.2024.129405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 01/02/2024] [Accepted: 01/09/2024] [Indexed: 01/16/2024]
Abstract
Titanium dioxide-based materials treat wastewater contaminated by organic pollutants. However, the wide band gap and the ease of agglomeration limit its photocatalytic activity. PDA/PEI@TiO2@P-HSM composites were synthesized using PDA/PEI as an interfacial bonding modifier via polymerization reaction. Phase and chemical bonding analysis confirmed the modifiedTiO2 coated P-HSM, which can effectively reduce the band gap and control the agglomeration of titanium dioxide, i.e., suitable to degrade RhB. Under UV irradiation, PDA/PEI @TiO2@P-HSM can remove RhB up to 90 % in 100 min. The photocatalytic degradation process conforms to the Langmuir-Hinshelwood quasi-primary equation. The composite exhibited excellent stability and recycling i.e., a high removal effect, with a removal rate of up to 60 % after seven cycles of reaction.
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Affiliation(s)
- Lijun Chen
- Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, 710021 Xi'an, China
| | - Junfeng Zhu
- Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, 710021 Xi'an, China.
| | - Jie Song
- Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, 710021 Xi'an, China.
| | - Jing Yang
- Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, 710021 Xi'an, China
| | - Yuhua Niu
- Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, 710021 Xi'an, China
| | - Dong Zhao
- Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, 710021 Xi'an, China
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Wang J, Deng X, Zhao H, Liu X, Zheng M, Jiang Z, Zhang L, Zhang H. Performance and mechanism of ammonia production by electrocatalytic nitrate reduction based on dodecahydro-closo-dodecaborate hybrid. J Colloid Interface Sci 2023; 652:945-951. [PMID: 37634367 DOI: 10.1016/j.jcis.2023.08.132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/17/2023] [Accepted: 08/20/2023] [Indexed: 08/29/2023]
Abstract
Ammonia is an essential food and fertilizer component and is a fundamental raw material for industry and agriculture. In contrast, nitrate is the main pollutant that causes eutrophication in water. Electrocatalysis is a clean and efficient method for simultaneous nitrate removal and ammonia production. However, because ammonia production from the electrocatalytic nitrate reduction reaction (NO3RR) is a complex eight-electron process with slow kinetics, designing the cathode catalyst is critical for improving the ammonia yield. In this study, boron (B) doped metal oxides (TiZn2O4@B-x) obtained by coupling dodecahydro-closo-dodecaborate anions ([closo-B12H12]2-) and ZnTi-layered double hydroxides (ZnTi-LDH) after calcination was used as the cathode for the NO3RR. Specifically, TiZn2O4@B-700 exhibited excellent ammonia yield (21809.24 μg h-1 mgcat-1) and Faraday efficiency (FE) of (93.15%) at -1.8 V versus saturated calomel electrode (SCE). Furthermore, TiZn2O4@B-700 exhibited superior cycling stability and resistance to ionic interference. Moreover, density functional theory (DFT) calculations indicated that incorporating B increased the electron transfer rate and reduced the free energy required for the rate-limiting step of ammonia production via the NO3RR, thereby increasing the ammonia yield. This study provides a new concept for designing catalysts for green ammonia synthesis.
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Affiliation(s)
- Jiajia Wang
- School of Optoelectronic Materials and Technology, Jianghan University, Wuhan 430056, China; College of Chemistry and Molecular Sciences, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, Wuhan 430072, China
| | - Xuefan Deng
- College of Chemistry and Molecular Sciences, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, Wuhan 430072, China
| | - Haixu Zhao
- College of Chemistry and Molecular Sciences, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, Wuhan 430072, China
| | - Xun Liu
- College of Chemistry and Molecular Sciences, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, Wuhan 430072, China
| | - Mai Zheng
- College of Chemistry and Molecular Sciences, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, Wuhan 430072, China
| | - Zan Jiang
- College of Chemistry and Molecular Sciences, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, Wuhan 430072, China.
| | - Long Zhang
- School of Optoelectronic Materials and Technology, Jianghan University, Wuhan 430056, China.
| | - Haibo Zhang
- College of Chemistry and Molecular Sciences, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, Wuhan 430072, China.
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Schmidt B, Freidank-Pohl C, Zillessen J, Stelzer L, Guitar TN, Lühr C, Müller H, Zhang F, Hammel JU, Briesen H, Jung S, Gusovius HJ, Meyer V. Mechanical, physical and thermal properties of composite materials produced with the basidiomycete Fomes fomentarius. Fungal Biol Biotechnol 2023; 10:22. [PMID: 38049892 PMCID: PMC10694974 DOI: 10.1186/s40694-023-00169-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 10/26/2023] [Indexed: 12/06/2023] Open
Abstract
BACKGROUND To achieve climate neutrality, fundamentally new concepts of circularity need to be implemented by the building sector as it contributes to 40% of anthropogenic CO2 emission. Fungal biotechnology can make a significant contribution here and help eliminate fossil dependency for building material production. Recently, we have shown that the medicinal polypore Fomes fomentarius feeds well on renewable lignocellulosic biomass and produces composite materials that could potentially replace fossil fuel-based expanded polystyrene as insulation material. RESULTS In this study, we explored the mechanical, physical, and thermal properties of F. fomentarius-based composite materials in more detail and determined key performance parameters that are important to evaluate the usability of F. fomentarius-based composite materials in the construction sector. These parameters were determined according to European standards and included compressive strength, modulus of elasticity, thermal conductivity, water vapour permeability, and flammability of uncompressed composites as well as flexural strength, transverse tensile strength, and water absorption capacity of heat-pressed composites, among others. We could show that uncompressed composites obtained from F. fomentarius and hemp shives display a thermal conductivity of 0.044 W (m K)-1 which is in the range of natural organic fibres. A water vapour permeability of 1.72 and classification into flammability class B1 clearly surpasses fossil-based insulation materials including expanded polystyrene and polyurethane. We could furthermore show that heat-pressing can be used to reliably generate stiff and firm particleboards that have the potential to replace current wood-based particleboards that contain synthetic additives. X-ray microcomputed tomography finally visualized for the first time the growth of hyphae of F. fomentarius on and into the hemp shive substrates and generated high-resolution images of the microstructure of F. fomentarius-based composites. CONCLUSION This study demonstrates that fungal-based composites produced with F. fomentarius partially meet or even exceed key performance parameters of currently used fossil fuel-based insulation materials and can also be used to replace particleboards.
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Affiliation(s)
- Bertram Schmidt
- Chair of Applied and Molecular Microbiology, Technische Universität Berlin, Str. des 17. Juni 135, 10623, Berlin, Germany
| | - Carsten Freidank-Pohl
- Chair of Applied and Molecular Microbiology, Technische Universität Berlin, Str. des 17. Juni 135, 10623, Berlin, Germany
| | - Justus Zillessen
- Chair of Applied and Molecular Microbiology, Technische Universität Berlin, Str. des 17. Juni 135, 10623, Berlin, Germany
| | - Lisa Stelzer
- Chair of Applied and Molecular Microbiology, Technische Universität Berlin, Str. des 17. Juni 135, 10623, Berlin, Germany
| | - Tamara Núñez Guitar
- Chair of Applied and Molecular Microbiology, Technische Universität Berlin, Str. des 17. Juni 135, 10623, Berlin, Germany
| | - Carsten Lühr
- Department Systems Process Engineering, Leibniz-Institute for Agricultural Engineering and Bioeconomy (ATB), Max-Eyth-Allee 100, 14469, Potsdam, Germany
| | - Henri Müller
- School of Life Sciences Weihenstephan, Chair of Process Systems Engineering, Technical University of Munich, 85354, Freising, Germany
| | - Fangxing Zhang
- School of Life Sciences Weihenstephan, Chair of Process Systems Engineering, Technical University of Munich, 85354, Freising, Germany
| | - Jörg U Hammel
- Institute of Materials Physics, Helmholtz-Zentrum Hereon, Max-Planck-Str 1, 21502, Geesthacht, Germany
| | - Heiko Briesen
- School of Life Sciences Weihenstephan, Chair of Process Systems Engineering, Technical University of Munich, 85354, Freising, Germany
| | - Sascha Jung
- Chair of Applied and Molecular Microbiology, Technische Universität Berlin, Str. des 17. Juni 135, 10623, Berlin, Germany
| | - Hans-Jörg Gusovius
- Department Systems Process Engineering, Leibniz-Institute for Agricultural Engineering and Bioeconomy (ATB), Max-Eyth-Allee 100, 14469, Potsdam, Germany.
| | - Vera Meyer
- Chair of Applied and Molecular Microbiology, Technische Universität Berlin, Str. des 17. Juni 135, 10623, Berlin, Germany.
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Bai Y, Jing Z, Ma R, Wan X, Liu J, Huang W. A critical review of enzymes immobilized on chitosan composites: characterization and applications. Bioprocess Biosyst Eng 2023; 46:1539-1567. [PMID: 37540309 DOI: 10.1007/s00449-023-02914-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Accepted: 07/21/2023] [Indexed: 08/05/2023]
Abstract
Enzymes with industrial significance are typically used in biological processes. However, instability, high sensitivity, and impractical recovery are the major drawbacks of enzymes in practical applications. In recent years, the immobilization technology has attracted wide attention to overcoming these restrictions and improving the efficiency of enzyme applications. Chitosan (CS) is a unique functional substance with biocompatibility, biodegradability, non-toxicity, and antibacterial properties. Chitosan composites are anticipated to be widely used in the near future for a variety of purposes, including as supports for enzyme immobilization, because of their advantages. Therefor this review explores the effects of the chitosan's structure, molecular weight, degree of deacetylation on the enzyme immobilized, effect of key factors, and the enzymes immobilized on chitosan based composites for numerous applications, including the fields of biosensor, biomedical science, food industry, environmental protection, and industrial production. Moreover, this study carefully investigates the advantages and disadvantages of using these composites as well as their potential in the future.
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Affiliation(s)
- Yuan Bai
- School of Environment and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, People's Republic of China.
- Key Laboratory of Yellow River Water Environment in Gansu Province, Lanzhou Jiaotong University, Lanzhou, 730070, People's Republic of China.
| | - Zongxian Jing
- School of Environment and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, People's Republic of China
| | - Rui Ma
- School of Environment and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, People's Republic of China
| | - Xinwen Wan
- School of Environment and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, People's Republic of China
| | - Jie Liu
- School of Environment and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, People's Republic of China
| | - Weiting Huang
- School of Environment and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, People's Republic of China
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9
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Obayomi KS, Yon Lau S, Danquah MK, Zhang J, Chiong T, Meunier L, Rahman MM. Selective adsorption of organic dyes from aqueous environment using fermented maize extract-enhanced graphene oxide-durian shell derived activated carbon composite. Chemosphere 2023; 339:139742. [PMID: 37562502 DOI: 10.1016/j.chemosphere.2023.139742] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 07/24/2023] [Accepted: 08/03/2023] [Indexed: 08/12/2023]
Abstract
A secure aquatic environment is essential for both aquatic and terrestrial life. However, rising populations and the industrial revolution have had a significant impact on the quality of the water environment. Despite the implementation of strong and adapted environmental policies for water treatment worldwide, the issue of organic dyes in wastewater remains challenging. Thus, this study aimed to develop an efficient, cost-effective, and sustainable material to treat methylene blue (MB) in an aqueous environment. In this research, maize extract solution (MES) was utilized as a green cross-linker to induce precipitation, conjugation, and enhance the adsorption performance of graphene oxide (GO) cross-linked with durian shell activated carbon (DSAC), resulting in the formation of a GO@DSAC composite. The composite was investigated for its adsorptive performance toward MB in aqueous media. The physicochemical characterization demonstrated that the cross-linking method significantly influenced the porous structure and surface chemistry of GO@DSAC. BET analysis revealed that the GO@DSAC exhibited dominant mesopores with a surface area of 803.67 m2/g. EDX and XPS measurements confirmed the successful cross-linking of GO with DSAC. The adsorption experiments were well described by the Harkin-Jura model and they followed pseudo-second order kinetics. The maximum adsorption capacity reached 666.67 mg/g at 318 K. Thermodynamic evaluation indicated a spontaneous, feasible, and endothermic in nature. Regenerability and reusability investigations demonstrated that the GO@DSAC composite could be reused for up to 10 desorption-adsorption cycles with a removal efficiency of 81.78%. The selective adsorptive performance of GO@DSAC was examined in a binary system containing Rhodamine B (RhB) and methylene orange (MO). The results showed a separation efficiency (α) of 98.89% for MB/MO and 93.66% for MB/RhB mixtures, underscoring outstanding separation capabilities of the GO@DSAC composite. Overall, the GO@DSAC composite displayed promising potential for the effective removal of cationic dyes from wastewater.
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Affiliation(s)
- Kehinde Shola Obayomi
- Department of Chemical Engineering, Curtin University, CDT 250, 98009, Miri, Sarawak, Malaysia; Institute for Sustainable Industries and Liveable Cities, Victoria University, Werribee, VIC, 3030, Australia.
| | - Sie Yon Lau
- Department of Chemical Engineering, Curtin University, CDT 250, 98009, Miri, Sarawak, Malaysia
| | - Michael K Danquah
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, TN, 37996, United States
| | - Jianhua Zhang
- Institute for Sustainable Industries and Liveable Cities, Victoria University, Werribee, VIC, 3030, Australia
| | - Tung Chiong
- Department of Chemical Engineering, Curtin University, CDT 250, 98009, Miri, Sarawak, Malaysia
| | - Louise Meunier
- Department of Chemical Engineering, Queen's University, Kingston, K7L 3N6, Canada
| | - Mohammad Mahmudur Rahman
- Global Centre for Environmental Remediation (GCER), College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia; Department of General Educational Development, Faculty of Science and Information Technology, Daffodil International University, Birulia, Dhaka 1216, Bangladesh
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10
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Cano FJ, Imbuluzqueta G, Yurrita N, Aizpurua J, Hernández JM, Cambarau W, Zubillaga O. Composite material with enhanced recyclability as encapsulant for photovoltaic modules. Heliyon 2023; 9:e20048. [PMID: 37809571 PMCID: PMC10559768 DOI: 10.1016/j.heliyon.2023.e20048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 09/07/2023] [Accepted: 09/09/2023] [Indexed: 10/10/2023] Open
Abstract
Encapsulation of photovoltaic cells was carried out using a transparent glass fiber reinforced composite with enhanced chemical recyclability based on a matrix of an epoxy resin containing cleavable functional groups. The current-voltage curves showed a decrease of 6.3% on the short-circuit current (Isc) after encapsulation of the cell, lower than the one observed for the reference non-recyclable standard epoxy composite. Its performance stability under thermal cycling, ultraviolet (UV), and damp-heat exposure was evaluated and compared with the one of the reference standard epoxy. Both resins showed good stability performance under UV exposure and thermal cycling accelerated aging. Moreover, a power loss below the 5% allowed by the photovoltaic standard was observed for the recyclable resin after 1000 h of damp-heat exposure, even the pronounced loss of 4.7% in power remains a concern. Regarding the recyclability, the composite was dissolved in acetic acid dissolution and glass fiber fabrics were successfully recovered. A new module was manufactured with these fabrics, showing this time a loss of 12% in Isc comparing with the non-encapsulated cell. Further work will consider improving the moisture barrier properties of the composite, and adjusting the recycling conditions to allow component recovery valid for new modules.
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Affiliation(s)
- Francisco J. Cano
- TECNALIA, Basque Research and Technology Alliance (BRTA), Mikeletegi Pasealekua 2, 20009, Donostia-San Sebastian, Spain
| | - Gorka Imbuluzqueta
- TECNALIA, Basque Research and Technology Alliance (BRTA), Mikeletegi Pasealekua 2, 20009, Donostia-San Sebastian, Spain
| | - Naiara Yurrita
- TECNALIA, Basque Research and Technology Alliance (BRTA), Mikeletegi Pasealekua 2, 20009, Donostia-San Sebastian, Spain
| | - Jon Aizpurua
- TECNALIA, Basque Research and Technology Alliance (BRTA), Mikeletegi Pasealekua 2, 20009, Donostia-San Sebastian, Spain
| | - Juan M. Hernández
- TECNALIA, Basque Research and Technology Alliance (BRTA), Mikeletegi Pasealekua 2, 20009, Donostia-San Sebastian, Spain
| | - Werther Cambarau
- TECNALIA, Basque Research and Technology Alliance (BRTA), Mikeletegi Pasealekua 2, 20009, Donostia-San Sebastian, Spain
| | - Oihana Zubillaga
- TECNALIA, Basque Research and Technology Alliance (BRTA), Mikeletegi Pasealekua 2, 20009, Donostia-San Sebastian, Spain
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11
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Hou Y, Zhang K, Noori A, Lu Y, Zhang Y, Chen J, Ke J. Experimental investigation on mechanical properties of aged bamboo fiber-reinforced composites under quasi-static loading. J Mech Behav Biomed Mater 2023; 143:105869. [PMID: 37150136 DOI: 10.1016/j.jmbbm.2023.105869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 04/22/2023] [Accepted: 04/23/2023] [Indexed: 05/09/2023]
Abstract
Bamboo fiber-reinforced composites (BFRC) have gradually attracted the interest of researchers due to their excellent mechanical properties. However, the age factor can affect these composites' mechanical properties and weaken them. This study aims to explore the mechanical properties of BFRC subjected different aging tests. First, the BFRC is prepared from raw bamboo through a series of technological processes. Second, the BFRC sheets are processed into tensile and compressive samples with different directions. Third, the samples are treated with a cold-hot test and a UV dry-wet test, respectively. Finally, quasi-static experiments are carried out to study the mechanical properties of aged BFRC. The results reveal that the BFRC has significant anisotropy. The tensile strength of BFRC parallel with the axis of the reinforcing fiber is as high as 148.53 MPa. It is 26.47 times greater than the tensile strength of BFRC perpendicular to the axis of the reinforcing fiber. The mechanical responses and SEM images show that the UV dry-wet test significantly affects on the BFRC compared to the cold-hot test. It dramatically reduces the mechanical properties of the BFRC. The SEM images further indicate that cracks occur on the surface of BFRC samples under the UV dry-wet test. In addition, two aging tests have an interactive effect on BFRC, which can reduce the sensitivity of BFRC to a UV dry-wet environment. These results are expected to deepen the understanding of the mechanical properties of BFRC and provide guidance for its applicable conditions.
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Affiliation(s)
- Yubo Hou
- Quanzhou Institute of Equipment Manufacturing, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, Jinjiang, 362200, Fujian, China
| | - Kairan Zhang
- Quanzhou Institute of Equipment Manufacturing, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, Jinjiang, 362200, Fujian, China; School of Advanced Manufacturing, Fuzhou University, Fuzhou, 350001, Fujian, China
| | - Adel Noori
- School of Architecture and Civil Engineering, Liming Vocational University, Quanzhou, 362000, Fujian, China
| | - Yubin Lu
- Quanzhou Institute of Equipment Manufacturing, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, Jinjiang, 362200, Fujian, China.
| | - Yong Zhang
- College of Mechanical Engineering and Automation, Huaqiao University, Xiamen, 361000, Fujian, China
| | - Jie Chen
- Quanzhou Institute of Equipment Manufacturing, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, Jinjiang, 362200, Fujian, China; School of Advanced Manufacturing, Fuzhou University, Fuzhou, 350001, Fujian, China
| | - Jinfu Ke
- Quanzhou Institute of Equipment Manufacturing, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, Jinjiang, 362200, Fujian, China
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12
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Ma XY, Xie QQ, Hadiya A, Xamsiya N, Zhao ZX. Preparation of magnetic composites and their dimethyl arsonic acid adsorption performances. Environ Sci Pollut Res Int 2023; 30:59554-59566. [PMID: 37010680 DOI: 10.1007/s11356-023-26770-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 03/28/2023] [Indexed: 05/10/2023]
Abstract
Dimethyl arsonic acid, the most common organic arsenic pollutant, is widely present in the environment and seriously threatens the safety of drinking water. Syntheses of magnetite, magnetic bentonite, and magnetic ferrihydrite via hydrothermal methods, and the magnetic composites were examined using XRD, BET, VSM, and SEM. SEM images revealed that many monodispersible pellets were attached to the surface of magnetic bentonite. The magnetic ferrihydrite contained abundant pores and had a rich pore structure, which expanded the specific surface area of the original magnetite. The specific surface areas of the magnetic bentonite and magnetic ferrihydrite were 65.17 and 220.30 m2·g-1, respectively. The adsorption kinetics and adsorption isotherms of dimethyl arsonic acid on magnetic composites were studied. The adsorption of dimethyl arsonic acid on the magnetic composites conformed to the pseudo-second-order model and Freundlich isothermal adsorption model. By comparing the isotherms of the adsorption of dimethyl arsonic acid by the magnetic composites at pH values of 3, 7, and 11, respectively, it was found that the adsorption of dimethyl arsonic acid was the greatest at neutral pH of 7. The adsorption mechanism was analyzed via zeta potential determination, Fourier transform infrared spectroscopy (FT-IR), and X-ray photoelectron spectroscopy (XPS). The zeta potential results revealed that magnetic bentonite electrostatic activity occurred with dimethyl arsonic acid, and the magnetic ferrihydrite indicated a coordination complex with dimethyl arsonic acid. The XPS results revealed that the Fe-O bonds on the surfaces of the magnetic ferrihydrite had coordination complexation effects on the As-O of the dimethyl arsonic acid.
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Affiliation(s)
- Xiao-Yan Ma
- College of Chemistry and Chemical Engineering, Xinjiang Normal University, Urumqi, 830054, China
- Xinjiang Key Laboratory of Energy Storage and Photoelectroctalytic Materials, Urumqi, 830054, China
| | - Qing-Qing Xie
- College of Chemistry and Chemical Engineering, Xinjiang Normal University, Urumqi, 830054, China
- Xinjiang Key Laboratory of Energy Storage and Photoelectroctalytic Materials, Urumqi, 830054, China
| | - Ablat Hadiya
- College of Chemistry and Chemical Engineering, Xinjiang Normal University, Urumqi, 830054, China
- Xinjiang Key Laboratory of Energy Storage and Photoelectroctalytic Materials, Urumqi, 830054, China
| | - Nurmamat Xamsiya
- College of Chemistry and Chemical Engineering, Xinjiang Normal University, Urumqi, 830054, China
- Xinjiang Key Laboratory of Energy Storage and Photoelectroctalytic Materials, Urumqi, 830054, China
| | - Zhi-Xi Zhao
- College of Chemistry and Chemical Engineering, Xinjiang Normal University, Urumqi, 830054, China.
- Xinjiang Key Laboratory of Energy Storage and Photoelectroctalytic Materials, Urumqi, 830054, China.
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de Lima LF, Lopes Ferreira A, Martinez de Freitas ADS, de Souza Rodrigues J, Lemes AP, Ferreira M, de Araujo WR. Biodegradable and Flexible Thermoplastic Composite Graphite Electrodes: A Promising Platform for Inexpensive and Sensitive Electrochemical Detection of Creatine Kinase at the Point-of-Care. ACS Appl Mater Interfaces 2023; 15:18694-18706. [PMID: 37014991 DOI: 10.1021/acsami.3c01379] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Acute myocardial infarction (AMI) is the main cause of death worldwide, and the time of diagnosis is decisive for the effectiveness of the treatment of patients with AMI. Creatine kinase-myocardial band (CK-MB) has a predominance and high affinity with myocardial tissue, making it considered one of the main biomarkers for the diagnosis of AMI. In this work, we report a novel biodegradable composite material based on a polymer blend of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) and Poly(butylene adipate-co-terephthalate) (PHBV:Ecoflex) and graphite microparticles for sensitive and selective electrochemical detection of CK-MB. The morphological and physicochemical characterizations of the thermoplastic composite material revealed a homogeneous and synergistic distribution of the graphite microparticles through the blend structure, providing low defects and high electrical conductivity with high electron transfer kinetics (k0 = 3.54 × 10-3 cm s-1) features with adequate flexibility for point-of-care applications. The portable and disposable devices were applied to detect CK-MB using the electrochemical impedance spectroscopy (EIS) technique in a relevant clinical concentration ranging from 5.0 ng mL-1 to 100.0 ng mL-1 and presented a limit of detection of 0.26 ng mL-1 CK-MB. The selectivity of the sensor was confirmed by testing the potential interference of major biomolecules found in biofluids and other relevant macromolecules. The accuracy and robustness were assessed by addition and recovery protocol in urine and saliva samples without sample pretreatment and demonstrated the potential of our method for rapid and decentralized tests of AMI. In addition, the study of the thermal, biological, and photodegradation of the devices after being used was also carried out, aiming at the disposal of the material more sustainably.
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Affiliation(s)
- Lucas Felipe de Lima
- Portable Chemical Sensors Lab, Department of Analytical Chemistry, Institute of Chemistry, State University of Campinas (UNICAMP), 13083-970, Campinas, São Paulo, Brazil
| | - André Lopes Ferreira
- Portable Chemical Sensors Lab, Department of Analytical Chemistry, Institute of Chemistry, State University of Campinas (UNICAMP), 13083-970, Campinas, São Paulo, Brazil
| | - Amanda de Sousa Martinez de Freitas
- Polymers and Biopolymers Technology Lab. (TecPBio), Institute of Science and Technology (ICT), Federal University of São Paulo (UNIFESP), 12231-280, São José dos Campos, São Paulo, Brazil
| | - Jéssica de Souza Rodrigues
- Center of Science and Technology for Sustainability (CCTS), Federal University of São Carlos (UFSCar), 18052-780, Sorocaba, São Paulo, Brazil
| | - Ana Paula Lemes
- Polymers and Biopolymers Technology Lab. (TecPBio), Institute of Science and Technology (ICT), Federal University of São Paulo (UNIFESP), 12231-280, São José dos Campos, São Paulo, Brazil
| | - Marystela Ferreira
- Center of Science and Technology for Sustainability (CCTS), Federal University of São Carlos (UFSCar), 18052-780, Sorocaba, São Paulo, Brazil
| | - William Reis de Araujo
- Portable Chemical Sensors Lab, Department of Analytical Chemistry, Institute of Chemistry, State University of Campinas (UNICAMP), 13083-970, Campinas, São Paulo, Brazil
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14
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Chen J, Shan M, Zhu H, Zhang S, Li J, Li L. Antimicrobial properties of heterojunction BiSnSbO 6-ZnO composites in wastewater treatment. Environ Sci Pollut Res Int 2023; 30:55498-55512. [PMID: 36892696 DOI: 10.1007/s11356-023-25934-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 11/01/2022] [Indexed: 06/18/2023]
Abstract
BiSnSbO6-ZnO composite photocatalytic material with type II heterojunction structure was synthesized by a simple solid-phase sintering method, it was characterized by XRD, UV-vis, and PT methods. The photocatalytic antibacterial experiments were carried out under LED light irradiation. The experimental results showed that the photocatalytic antibacterial properties of BiSnSbO6-ZnO composites against bacteria and fungi were significantly stronger than those of single BiSnSbO6 and ZnO. Under light conditions, the antibacterial efficiencies of 500 mg/L BiSnSbO6-ZnO composites against E. coli, S. aureus, and P. aeruginosa reached 99.63%, 100%, and 100% for 6 h, 4 h, and 4 h, respectively. The best antibacterial concentration of BiSnSbO6-ZnO composite against the eukaryotic microorganism Candida albicans was 250 mg/L, and the antibacterial efficiency reached the highest 63.8% at 6 h. Antibacterial experiments were carried out on domestic livestock and poultry wastewater, which showed that the BiSnSbO6-ZnO composite photocatalytic material has broad-spectrum antibacterial activity against bacteria, and the antibacterial effect has species differences. Through the MTT experiment, it is proved that the prepared BiSnSbO6-ZnO composite photocatalytic material has no toxicity at the experimental concentration. According to the free radical scavenging experiment and SEM observation of the morphological changes of the bacteria after light treatment, the prepared BiSnSbO6-ZnO composite photocatalytic material can generate active species OH, h+, and e- through light irradiation to achieve the purpose of sterilization, where e- play a major role, indicating that the BiSnSbO6-ZnO composite photocatalytic material has broad application prospects in the actual antibacterial field.
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Affiliation(s)
- Jing Chen
- School of Life Science and Technology, Changchun University of Science and Technology, Changchun, 130022, China
| | - Mengde Shan
- School of Life Science and Technology, Changchun University of Science and Technology, Changchun, 130022, China
| | - Haojia Zhu
- School of Life Science and Technology, Changchun University of Science and Technology, Changchun, 130022, China
| | - Shichuan Zhang
- School of Life Science and Technology, Changchun University of Science and Technology, Changchun, 130022, China
| | - Jingmei Li
- School of Life Science and Technology, Changchun University of Science and Technology, Changchun, 130022, China.
| | - Leijiao Li
- School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun, 130022, China
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15
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Long JR, Kalani MA, Goulding KA, Ashman JB, Flug JA. Carbon-fiber-reinforced polyetheretherketone orthopedic implants in musculoskeletal and spinal tumors: imaging and clinical features. Skeletal Radiol 2023; 52:393-404. [PMID: 35536358 DOI: 10.1007/s00256-022-04069-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 04/27/2022] [Accepted: 04/27/2022] [Indexed: 02/02/2023]
Abstract
Carbon-fiber-reinforced polyetheretherketone (CFR-PEEK) orthopedic implants are gaining popularity in oncologic applications as they offer many potential advantages over traditional metallic implants. From an imaging perspective, this instrumentation allows for improved evaluation of adjacent anatomic structures during radiography, computed tomography (CT), and magnetic resonance imaging (MRI). This results in improved postoperative surveillance imaging quality as well as easier visualization of anatomy for potential image-guided percutaneous interventions (e.g., pain palliation injections, or ablative procedures for local disease control). CFR-PEEK devices are also advantageous in radiation oncology treatment due to their decreased imaging artifact during treatment planning imaging and decreased dose perturbation during radiotherapy delivery. As manufacturing processes for CFR-PEEK materials continue to evolve and improve, potential orthopedic applications in the spine and appendicular skeleton increase. An understanding of the unique properties of CFR-PEEK devices and their impact on imaging is valuable to radiologists delivering care to orthopedic oncology patients in both the diagnostic and interventional settings. This multidisciplinary review aims to provide a comprehensive insight into the radiologic, surgical, and radiation oncology impact of these innovative devices.
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Affiliation(s)
- Jeremiah R Long
- Department of Radiology, Mayo Clinic Arizona, 5777 East Mayo Boulevard, Phoenix, AZ, 85054, USA.
| | - Maziyar A Kalani
- Department of Neurosurgery, Mayo Clinic Arizona, 5777 East Mayo Boulevard, Phoenix, AZ, 85054, USA
| | - Krista A Goulding
- Department of Orthopedic Surgery, Mayo Clinic Arizona, 5777 East Mayo Boulevard, Phoenix, AZ, 85054, USA
| | - Jonathan B Ashman
- Department of Radiation Oncology, Mayo Clinic Arizona, 5777 East Mayo Boulevard, Phoenix, AZ, 85054, USA
| | - Jonathan A Flug
- Department of Radiology, Mayo Clinic Arizona, 5777 East Mayo Boulevard, Phoenix, AZ, 85054, USA
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16
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Wang W, Lv B, Tao F. NiO/g-C 3N 4 composite for enhanced photocatalytic properties in the wastewater treatment. Environ Sci Pollut Res Int 2023; 30:25620-25634. [PMID: 36413264 DOI: 10.1007/s11356-022-24121-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 11/05/2022] [Indexed: 06/16/2023]
Abstract
The massive discharge of colored wastewater has seriously harmed the environment and people's health. Photocatalysis technology is an effective method to purify colored wastewater and has been widely concerned in colored wastewater treatment. In this study, based on the obtained nickel oxide (NiO) nanospheres by solvothermal method and graphite phase carbon nitride (g-C3N4) nanosheets by thermal polymerization method, the p-n heterojunction composed of NiO nanospheres and g-C3N4 nanosheets was successfully constructed by heat treatment for the photocatalytic degradation of methyl orange (MO). The morphology, crystallinity, surface features, and optical properties of the NiO/g-C3N4 composites were investigated by various characterization methods such as scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray diffractometer (XRD), Fourier transform infrared spectrometer (FT-IR), X-ray photoelectron spectroscopy (XPS), UV-vis spectrophotometer, and fluorescence spectrometer (PL), which provided the evidence for the formation of the heterojunction between NiO and g-C3N4. Compared with the g-C3N4 nanosheets and NiO nanospheres, the NiO/g-C3N4 composites showed the improved photocatalytic activity for the degradation of MO under visible light irradiation. And the NiO/g-C3N4 composite with the mole ratio of NiO and g-C3N4 of 2:8 displayed the best photocatalytic activity of MO, and more than 90% of MO can be degraded under the illumination of 100 min. The high photocatalytic properties over the NiO/g-C3N4 composite may be due to high specific surface area, the perfect band matching, and the formation of the p-n heterojunction, which helps to promote interfacial charge transfer and hinder the recombination of photo-generated electrons and holes. Moreover, the NiO/g-C3N4 composite exhibits the universality and cyclic stability, which is expected to have broad application prospects in the treatment of colored wastewater.
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Affiliation(s)
- Wei Wang
- School of Civil Engineering, Shaoxing University, Shaoxing, 312000, Zhejiang, China
| | - Beifeng Lv
- School of Civil Engineering, Shaoxing University, Shaoxing, 312000, Zhejiang, China
| | - Feifei Tao
- School of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, 312000, Zhejiang, China.
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17
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Wu M, Sadhukhan J, Murphy R, Bharadwaj U, Cui X. A novel life cycle assessment and life cycle costing framework for carbon fibre-reinforced composite materials in the aviation industry. Int J Life Cycle Assess 2023; 28:566-589. [PMID: 37077273 PMCID: PMC10043863 DOI: 10.1007/s11367-023-02164-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 03/18/2023] [Indexed: 05/03/2023]
Abstract
Purpose Carbon fibre-reinforced composite materials offer superior mechanical properties and lower weight than conventional metal products. However, relatively, little is known about the environmental impacts and economic costs associated with composite products displacing conventional metal products. The purpose of this study is to develop an integrated life cycle assessment and life cycle costing framework for composite materials in the aviation industry. Methods An integrated life cycle assessment (LCA) and life cycle costing (LCC) framework has been developed. The displacement of a conventional aluminium door for an aircraft by a composite door is presented as an example of the use of this framework. A graphical visualisation tool is proposed to model the integrated environmental and economic performances of this displacement. LCA and LCC models for composite applications are developed accordingly. The environmental hotspots are identified, and the sensitivity of the environmental impact results to the different composite waste treatment routes is performed. Subsequently, the research suggests a learning curve to analyse the unit price for competitive mass production. Sensitivity analysis and Monte Carlo simulation have been applied to demonstrate the cost result changes caused by data uncertainty. Results Energy consumption was the hotspot, and the choice of composite waste treatment routes had a negligible effect on the LCA outcomes. Concerning the costs, the most significant cost contribution for the unit door production was labour. The future door production cost was decreased by about 29% based on the learning curve theory. The uncertainties associated with the variables could lead to variations in the production cost of up to about 16%. The comparison between the two doors shows that the composite door had higher potential environmental impacts and cost compared to the conventional aluminium door during the production stage. However, the composite door would have better environmental and financial performance if a weight reduction of 47% was achieved in future designs. Conclusions The proposed framework and relevant analysis models were applied through a case study in the aerospace industry, creating a site-specific database for the community to support material selection and product development. The graphical tool was proved to be useful in representing a graphical visualisation comparison based on the integration of the LCA and LCC results of potential modifications to the composite door against the reference door, providing understandable information to the decision-makers. Supplementary Information The online version contains supplementary material available at 10.1007/s11367-023-02164-y.
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Affiliation(s)
- Minghui Wu
- Centre for Environment and Sustainability, University of Surrey, Guildford, UK
- Asset Integrity Management Section, TWI Ltd, Granta Park, Cambridge, UK
| | - Jhuma Sadhukhan
- Centre for Environment and Sustainability, University of Surrey, Guildford, UK
| | - Richard Murphy
- Centre for Environment and Sustainability, University of Surrey, Guildford, UK
| | - Ujjwal Bharadwaj
- Asset Integrity Management Section, TWI Ltd, Granta Park, Cambridge, UK
| | - Xiaofei Cui
- Asset Integrity Management Section, TWI Ltd, Granta Park, Cambridge, UK
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18
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Lisboa TP, de Oliveira WBV, de Souza CC, Oliveira RS, Matos MAC, Matos RC. Development of a 3D disposable device for the electrochemical determination of diclofenac in different matrices. Anal Bioanal Chem 2023; 415:357-366. [PMID: 36344667 DOI: 10.1007/s00216-022-04414-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/27/2022] [Accepted: 10/28/2022] [Indexed: 11/09/2022]
Abstract
In this work, the development of a disposable electrochemical device (US$ 0.02 per electrode) using a 3D printed support (3Ds) of acrylonitrile butadiene styrene (ABS) insulating filament with a composite material (CM) based on graphite and nail polish, immobilized on the support surface, was described for the electrochemical determination of diclofenac (DCF). The device was compared to the commercial glassy carbon electrode (GCE) and showed superior electroanalytical performance with approximately 1.8-fold higher current density. Additionally, an amperometric method for DCF determination in tap water, synthetic urine, and pharmaceutical formulation samples with the proposed electrode, using a flow injection analysis (FIA-AD) system, was developed. The optimized method presented excellent detectability (LOD = 0.47 µmol L-1), with excellent precision and accuracy (relative standard deviation < 5.6%) and percent recovery from spiked samples ranging from 89 to 106%. In addition, the sensor showed optimal analytical frequency with approximately 108 injections per hour, which demonstrates the potential of this system using the proposed disposable electrode for implementation in routine analysis and quality control with good selectivity and sensitivity.
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Affiliation(s)
- Thalles Pedrosa Lisboa
- Departamento de Química, Universidade Federal de Juiz de Fora, Juiz de Fora, MG, 36026-900, Brazil.
| | | | - Cassiano Cunha de Souza
- Departamento de Química, Universidade Federal de Juiz de Fora, Juiz de Fora, MG, 36026-900, Brazil
| | - Raylla Santos Oliveira
- Departamento de Química, Universidade Federal de Juiz de Fora, Juiz de Fora, MG, 36026-900, Brazil
| | | | - Renato Camargo Matos
- Departamento de Química, Universidade Federal de Juiz de Fora, Juiz de Fora, MG, 36026-900, Brazil
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Bin Mobarak M, Hossain MS, Chowdhury F, Ahmed S. Covid-19 waste facemask conundrum: A facile way of utilization through fabricating composite material with unsaturated polyester resin and evaluation of its mechanical properties. Heliyon 2022; 8:e12197. [PMID: 36531632 PMCID: PMC9737522 DOI: 10.1016/j.heliyon.2022.e12197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 09/11/2022] [Accepted: 11/30/2022] [Indexed: 12/14/2022] Open
Abstract
Since the outbreak of novel coronavirus (COVID-19), the use of personal protective equipment (PPE) has increased profusely. Among all the PPEs, face masks are the most picked ones by the mass people for protective purpose. This spawned extensive daily use of face masks and production of masks had to augment to keep up this booming demand. Such extensive use of face masks has resulted in a huge waste generation. Lack of proper disposal, waste management and waste recycling have already led this waste to pervade in the environment. In quest of finding a solution, here in this research, a composite material was fabricated utilizing waste face mask (WFM) with unsaturated polyester resin (UPR) and the mechanical properties were evaluated. The composites were fabricated by incorporating 1%, 2%, 3%, 4% and 5% WFM (by weight) within the UPR matrix in the shredded form following hand lay-up technique. Tensile properties, i.e., tensile strength (TS), tensile modulus (TM) and percentage elongation at break (% EB) as well as flexural properties, i.e., bending strength (BS) and bending modulus (BM) were evaluated for the fabricated composites. According to the results obtained, the 2% WFM loaded composites showed highest values of TS, TM, BS and BM which are 31.61 N/mm2, 1551.41 N/mm2, 66.53 N/mm2 and 4632.71 N/mm2 respectively. These values of 2% WFM loaded composite are 69.58%, 107.78%, 129.49% and 152% higher than the values of the control sample (UPR). Such results depict the successfulness of WFM's incorporation as a reinforcing material in the composite materials. Attenuated Total Reflectance-Fourier transform infrared spectroscopy (ATR-FTIR), scanning electron microscopy (SEM), water uptake and thickness swelling tests were also carried out for the fabricated composites. FTIR of the collected WFM revealed the fiber to be of polypropylene and the existing functional groups were also identified. The SEM images confirmed the proper adhesion of WFM and UPR in terms of mechanical bonding rather than chemical bonding. Water absorption and dimension change was investigated by water uptake and thickness swelling test. To sum up, the way we have utilized WFM as a reinforcing agent in a composite material, this could be a possible solution for the face mask's waste conundrum.
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Affiliation(s)
- Mashrafi Bin Mobarak
- Institute of Glass & Ceramic Research and Testing (IGCRT), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka 1205, Bangladesh
| | - Md. Sahadat Hossain
- Institute of Glass & Ceramic Research and Testing (IGCRT), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka 1205, Bangladesh
| | - Fariha Chowdhury
- Biomedical and Toxicological Research Institute (BTRI), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka 1205, Bangladesh
| | - Samina Ahmed
- Institute of Glass & Ceramic Research and Testing (IGCRT), Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka 1205, Bangladesh,BCSIR Laboratories Dhaka, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka 1205, Bangladesh,Corresponding author
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20
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Taskeen LT, Ganesh SB, Jayalakshmi S. Effect of thermocycling on the flexural strength of two different composite filling materials: An in vitro study. J Adv Pharm Technol Res 2022; 13:S121-S124. [PMID: 36643168 PMCID: PMC9836100 DOI: 10.4103/japtr.japtr_252_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 06/16/2022] [Indexed: 01/17/2023] Open
Abstract
Flexural strength is the bend strength or stress which causes failure in bending of the material. Composite is the widely used restorative material in the era of esthetic dentistry as it provides better esthetic and mechanical support for both posterior and anterior teeth. The term "thermocycling" refers to the process of changing temperatures in the mouth. Thus, the aim of the study was to determine the effect of thermocycling on flexural strength in two different composite filling materials. Twelve samples of packable type composite filling material, among which four samples prepared were from Restofill l (Group 1) and four were prepared from Ivoclar Vivadent (Group 2) for the study. Bar-shaped composite resin specimens were prepared with dimensions of 2 mm × 2 mm × 25 mm. Then, the eight samples were subjected to a thermocycling process and four left as control. This was followed by the determination of maximum force by a universal testing machine, and then, the collected data were used to determine flexural strength using the formula. The determining flexural strength was analyzed using SPSS version 23.0 by Independent sample t-test. The mean flexural strength of thermocycled Restofill composite filling material is 6.73, whereas the nonthermocycled Restofill sample showed 5.58 and the mean flexural strength of thermocycled Ivoclar Vivadent composite filling material was 5.08. The difference was not statistically significant with P = 0.978 >0.05. The current study concludes that the flexural strength of the Restofill composite (Group 1) was higher than the Ivoclar composite (Group 2). Hence, thermocycling affects the flexural strength of composite resin.
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Affiliation(s)
- L. Tahoora Taskeen
- Undergraduate Student, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
| | - S. Balaji Ganesh
- White Lab. Materials Research Centre, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India,Address for correspondence: Dr. S. Balaji Ganesh, White Lab - Materials Research Centre, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai - 600 077, Tamil Nadu, India. E-mail:
| | - S. Jayalakshmi
- White Lab. Materials Research Centre, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
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Housaindokht MR, Jamshidi A, Zonoz FM, Firouzi M. A novel nanocomposite (g-C 3N 4/Fe 3O 4@P 2W 15V 3) with dual function in organic dyes degradation and cysteine sensing. Chemosphere 2022; 304:135305. [PMID: 35718034 DOI: 10.1016/j.chemosphere.2022.135305] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 06/07/2022] [Accepted: 06/08/2022] [Indexed: 06/15/2023]
Abstract
Among the important needs of human societies is the elimination of environmental pollution and also the construction of high-performance and inexpensive biosensors. In this regard, the construction of multi-functional composites has been considered. A novel magnetic graphite carbon nitride decorated by tri-vanadium substituted Dawson-type heteropolytungstate nanocomposite (C3N4/Fe3O4@P2W15V3) effectively synthesized and characterized by prevalent functional analysis. The prepared nano-catalyst presents bi-functional usage involving photocatalytic removal of dyes (methylene blue, congo red and phenyl red) (around 98%) under visible light radiation and greatly sensitive colorimetric sensing of cysteine in an aqueous media. Moreover, synthesized nano-catalyst successfully recovered five times without any considerable deficiency on its photocatalytic ability. Further, Moreover, we propose a novel method for cysteine detection based on the C3N4/Fe3O4@P2W15V3 nanocomposite. This nanocomposite displayed a privileged catalytic feature for cysteine oxidation to extend a clock reaction of methylene blue as an indicator in the presence of NaBH4 in acidic solution. More importantly, this colorimetric sensing method of cysteine presents an easy, low-cost, selective, and rapid colorimetric assay with a detection limit value of 7.2 μM in the acceptable linear range of 5-600 μM.
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Affiliation(s)
- Mohammad Reza Housaindokht
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran; Research and Technology Center of Biomolecule, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran.
| | - Ali Jamshidi
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran; Research and Technology Center of Biomolecule, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran.
| | | | - Mojtaba Firouzi
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
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22
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Sun Z, Zhu R, Ding T, Zhang X, Li C. Induced morphology orientation of α-FeOOH by kaolinite for enhancing peroxymonosulfate activation. J Colloid Interface Sci 2022; 626:494-505. [PMID: 35809438 DOI: 10.1016/j.jcis.2022.06.151] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 06/10/2022] [Accepted: 06/25/2022] [Indexed: 10/31/2022]
Abstract
Persulfate activation technology based on sulfate radicals is currently a hot spot in the field of environmental governance. In our work, α-FeOOH was successful in situ loaded on kaolinite surface through a simple one-step hydrothermal process. The prepared composites were systematically characterized, and the relationship between the structural properties and peroxymonosulfate activation properties was explored. Interestingly, compared to bare α-FeOOH, the introduction of kaolinite in composite induced the transformation of α-FeOOH crystal and affected the morphology, where uniformly dispersed nanoparticles rather than rod-like agglomerated crystals appeared. The received FeOOH/kaolinite composite exhibited admirable adsorption and degradation of ciprofloxacin performance with the removal efficiency of 86.1%, and the degradation rate constant was up to 5.2 times higher than that of bare α-FeOOH. In addition, the main active species in the catalytic oxidation system are surface-bound SO4•-, •OH and free 1O2. This work would give a deep insight into the role of natural minerals in composite catalytic materials and the construction of high-efficient mineral-based composite materials.
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Affiliation(s)
- Zhiming Sun
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, P.R. China
| | - Rui Zhu
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, P.R. China
| | - Tianle Ding
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, P.R. China
| | - Xiangwei Zhang
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, P.R. China
| | - Chunquan Li
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, P.R. China.
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23
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Khalil M, Hanif MA, Rashid U, Ahmad J, Alsalme A, Tsubota T. Low-cost novel nano-constructed granite composites for removal of hazardous Terasil dye from wastewater. Environ Sci Pollut Res Int 2022:10.1007/s11356-022-21367-8. [PMID: 35710971 DOI: 10.1007/s11356-022-21367-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 06/05/2022] [Indexed: 06/15/2023]
Abstract
The hazardous dyes on mixing with water resources are affecting many life forms. Granite stone is popular worldwide for decorating floors, making other forms of decorative materials and items. Granite stone powder waste can be obtained free of cost from marble factories as factories spend on the disposal of this waste. In the present study, novel granite stone powder waste composite has been prepared and utilized for the effective removal of Terasil dye. Two types of granite including gray granite and white granite were used in pure, calcinized, and chemically modified forms. Freundlich adsorption isotherm model best explained the adsorption mechanism of dye removal using granite composites as compared to other adsorption isothermal models. Characterization techniques like scanning electron microscopy (SEM) and Fourier transform infrared (FTIR) spectroscopy were used for the determination of morphological features and functional groups of granite composites. The obtained results were statistically analyzed using analysis of variance (ANOVA) along with the post hoc Tukey test. An extraordinarily high Terasil dye uptake capacity (more than 400 mg/g) was exhibited by granite composites prepared using sodium metasilicate. The synthesized novel nano-constructed composites provided a viable strategy as compared to the pure granite stone for dye removal from wastewater water.
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Affiliation(s)
- Maria Khalil
- Nano and Biomaterial Lab, Department of Chemistry, University of Agriculture, Faisalabad, 38040, Pakistan
| | - Muhammad Asif Hanif
- Nano and Biomaterial Lab, Department of Chemistry, University of Agriculture, Faisalabad, 38040, Pakistan
| | - Umer Rashid
- Institute of Nanoscience and Nanotechnology (ION2), Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia.
| | - Junaid Ahmad
- Center of Excellence, Catalysis for Bioenergy and Renewable Chemicals (CBRC), Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Ali Alsalme
- Chemistry Department, College of Science, King Saud University, Riyadh, 1145, Saudi Arabia
| | - Toshiki Tsubota
- Department of Materials Science, Graduate School of Engineering, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata-ku, Kitakyushu, Fukuoka, 804-8550, Japan
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24
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Chen M, Yu M, Kang R, Sun H, Zhang W, Wang S, Wang N, Wang J. Removal of Pb (II) and V (V) from aqueous solution by glutaraldehyde crosslinked chitosan and nanocomposites. Chemosphere 2022; 297:134084. [PMID: 35219708 DOI: 10.1016/j.chemosphere.2022.134084] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 02/17/2022] [Accepted: 02/20/2022] [Indexed: 06/14/2023]
Abstract
In this paper, new adsorbents with high mechanical strength chitosan-graphene oxide (CS-GO) and chitosan-titanium dioxide (CS-TiO2) were synthesized by using glutaraldehyde as crosslinking agent, and the adsorption behavior of Pb (II) and V (V) on them were investigated. The materials were characterized by scanning electron microscopy (SEM-EDS), Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS). The effects of initial metal ion concentration and contact time on the removal of V (V) and Pb (II) by CS-GO and CS-TiO2 were investigated. Characterization results showed that the hydroxyl group of GO/TiO2 reacted with the amino group of chitosan. A comparison of the kinetic models against experimental data showed that the kinetics react system was best described by the pseudo-second-order model. indicating that chemical adsorption was the main adsorption force. the Langmuir adsorption model and Freundlich model agreed well with the experimental data. The removal capacity of Pb (II) by CS-GO and CS-TiO2 were lower than those of V (V). The uncross-linked -OH and CO were the main adsorptive sites for Pb (II) removal, while uncross-linked -OH and -NH2 played an important role in removing V (V). These findings provided insights on the removing lead and vanadium pollution.
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Affiliation(s)
- Menghua Chen
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, PR China
| | - Mengdie Yu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, PR China
| | - Runfeng Kang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, PR China
| | - Huimin Sun
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, PR China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangling, 712100, PR China.
| | - Wang Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, PR China
| | - Shengsen Wang
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou, 225127, PR China
| | - Nong Wang
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Tianjin, 300191, PR China
| | - Jun Wang
- College of Resources and Environment, Key Laboratory of Agricultural Environment in Universities of Shandong, Shandong Agricultural University, Tai'an, Shandong, 271000, PR China
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25
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Parra-Campos A, Serna-Cock L, Solanilla-Duque JF. Effect of the addition of fique bagasse microparticles in obtaining a biobased material based on cassava starch. Int J Biol Macromol 2022; 207:289-298. [PMID: 35259438 DOI: 10.1016/j.ijbiomac.2022.03.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 02/27/2022] [Accepted: 03/03/2022] [Indexed: 12/13/2022]
Abstract
The indiscriminate accumulation of plastic waste has prompted research that leads to obtaining biobased materials. The research aim was to evaluate the effect of incorporating fique bagasse microparticles (FBM) in a cassava starch-based foamed material. First, the FBM extraction conditions were established by acid hydrolysis, for which the effect of acid concentration (5, 10 and 15% H2SO4), temperature (70, 80 and 90 °C) and extraction time (3, 5 and 7 h) on particle size, functional groups, color, and thermal properties was evaluated. The addition of FBM to the foamed material was then carried out. To do this, a completely randomized design with five treatments (0, 0.5, 0.75, 1.0 and 1.25% FBM) was evaluated. The response variables were the apparent density, expansion and spring index, compressibility, water absorption, thermal properties and FTIR. The results showed that the acid concentration, temperature and time had an effect on the morphological, chemical and thermal properties of FBM, with 10%, 70 °C and 7 h being the conditions that allowed obtaining the smallest particle size (61.69 ± 12.88 μm2). Moreover, the FBM concentration had a significant effect on the physical and mechanical properties of the foam, unleashing the treatment properties of 0.75%. This indicates that FBM have potential for use in obtaining biobased materials.
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Affiliation(s)
- Amanda Parra-Campos
- Facultad de Ingeniería y Administración, Universidad Nacional de Colombia, Sede Palmira, 763533, Valle del Cauca, Colombia.
| | - Liliana Serna-Cock
- Facultad de Ingeniería y Administración, Universidad Nacional de Colombia, Sede Palmira, 763533, Valle del Cauca, Colombia.
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26
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Pohl C, Schmidt B, Nunez Guitar T, Klemm S, Gusovius HJ, Platzk S, Kruggel-Emden H, Klunker A, Völlmecke C, Fleck C, Meyer V. Establishment of the basidiomycete Fomes fomentarius for the production of composite materials. Fungal Biol Biotechnol 2022; 9:4. [PMID: 35209941 PMCID: PMC8876124 DOI: 10.1186/s40694-022-00133-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 01/27/2022] [Indexed: 12/12/2022] Open
Abstract
Background Filamentous fungi of the phylum Basidiomycota are considered as an attractive source for the biotechnological production of composite materials. The ability of many basidiomycetes to accept residual lignocellulosic plant biomass from agriculture and forestry such as straw, shives and sawdust as substrates and to bind and glue together these otherwise loose but reinforcing substrate particles into their mycelial network, makes them ideal candidates to produce biological composites to replace petroleum-based synthetic plastics and foams in the near future. Results Here, we describe for the first time the application potential of the tinder fungus Fomes fomentarius for lab-scale production of mycelium composites. We used fine, medium and coarse particle fractions of hemp shives and rapeseed straw to produce a set of diverse composite materials and show that the mechanical materials properties are dependent on the nature and particle size of the substrates. Compression tests and scanning electron microscopy were used to characterize composite material properties and to model their compression behaviour by numerical simulations. Their properties were compared amongst each other and with the benchmark expanded polystyrene (EPS), a petroleum-based foam used for thermal isolation in the construction industry. Our analyses uncovered that EPS shows an elastic modulus of 2.37 ± 0.17 MPa which is 4-times higher compared to the F. fomentarius composite materials whereas the compressive strength of 0.09 ± 0.003 MPa is in the range of the fungal composite material. However, when comparing the ability to take up compressive forces at higher strain values, the fungal composites performed better than EPS. Hemp-shive based composites were able to resist a compressive force of 0.2 MPa at 50% compression, rapeseed composites 0.3 MPa but EPS only 0.15 MPa. Conclusion The data obtained in this study suggest that F. fomentarius constitutes a promising cell factory for the future production of fungal composite materials with similar mechanical behaviour as synthetic foams such as EPS. Future work will focus on designing materials characteristics through optimizing substrate properties, cultivation conditions and by modulating growth and cell wall composition of F. fomentarius, i.e. factors that contribute on the meso- and microscale level to the composite behaviour. Supplementary Information The online version contains supplementary material available at 10.1186/s40694-022-00133-y.
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Affiliation(s)
- Carsten Pohl
- Chair of Applied and Molecular Microbiology, Technische Universität Berlin, Str. des 17. Juni 135, 10623, Berlin, Germany
| | - Bertram Schmidt
- Chair of Applied and Molecular Microbiology, Technische Universität Berlin, Str. des 17. Juni 135, 10623, Berlin, Germany
| | - Tamara Nunez Guitar
- Chair of Applied and Molecular Microbiology, Technische Universität Berlin, Str. des 17. Juni 135, 10623, Berlin, Germany
| | - Sophie Klemm
- Chair of Materials Science and Engineering, Technische Universität Berlin, Str. des 17. Juni 135, 10623, Berlin, Germany
| | - Hans-Jörg Gusovius
- Department of Post Harvest Technology, Leibniz-Institute for Agricultural Engineering and Bioeconomy (ATB), Max-Eyth-Allee 100, 14469, Potsdam, Germany
| | - Stefan Platzk
- Chair of Mechanical Process Engineering and Solids Processing (MVTA), Technische Universität Berlin, Str. des 17. Juni 135, 10623, Berlin, Germany
| | - Harald Kruggel-Emden
- Chair of Mechanical Process Engineering and Solids Processing (MVTA), Technische Universität Berlin, Str. des 17. Juni 135, 10623, Berlin, Germany
| | - Andre Klunker
- Stability and Failure of Functionally Optimized Structures Group, Technische Universität Berlin, Str. des 17. Juni 135, 10623, Berlin, Germany
| | - Christina Völlmecke
- Stability and Failure of Functionally Optimized Structures Group, Technische Universität Berlin, Str. des 17. Juni 135, 10623, Berlin, Germany
| | - Claudia Fleck
- Chair of Materials Science and Engineering, Technische Universität Berlin, Str. des 17. Juni 135, 10623, Berlin, Germany.
| | - Vera Meyer
- Chair of Applied and Molecular Microbiology, Technische Universität Berlin, Str. des 17. Juni 135, 10623, Berlin, Germany.
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Ambaye TG, Vaccari M, Prasad S, van Hullebusch ED, Rtimi S. Preparation and applications of chitosan and cellulose composite materials. J Environ Manage 2022; 301:113850. [PMID: 34619590 DOI: 10.1016/j.jenvman.2021.113850] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 09/22/2021] [Accepted: 09/24/2021] [Indexed: 05/28/2023]
Abstract
Chitosan is a natural fiber, chemically cellulose-like biopolymer, which is processed from chitin. Its use as a natural polymer is getting more attention because it is non-toxic, renewable, and biocompatible. However, its poor mechanical and thermal strength, particle size, and surface area restrict its industrial use. Consequently, to improve these properties, cellulose and/or inorganic nanoparticles have been used. This review discusses the recent progress of chitosan and cellulose composite materials, their preparation, and their applications in different industrial sectors. It also discusses the modification of chitosan and cellulose composite materials to allow their use on a large scale. Finally, the recent development of chitosan composite materials for drug delivery, food packaging, protective coatings, and wastewater treatment are discussed. The challenges and perspectives for future research are also considered. This review suggests that chitosan and cellulose nano-composite are promising, low-cost products for environmental remediation involving a simple production process.
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Affiliation(s)
- Teklit Gebregiorgis Ambaye
- Department of Civil, Environmental, Architectural Engineering and Mathematics, University of Brescia, Via Branze 43, 25123, Brescia, Italy.
| | - Mentore Vaccari
- Department of Civil, Environmental, Architectural Engineering and Mathematics, University of Brescia, Via Branze 43, 25123, Brescia, Italy
| | - Shiv Prasad
- Division of Environment Science, ICAR-Indian Agricultural Research Institute New Delhi, 110012, India
| | - Eric D van Hullebusch
- Université de Paris, Institut de Physique du Globe de Paris, CNRS, UMR 7154, F-75238, Paris, France
| | - Sami Rtimi
- Ecole Polytechnique Fédérale de Lausanne, CH, 1015, Lausanne, Switzerland.
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28
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Hu S, Zhi Y, Shan S, Ni Y. Research progress of smart response composite hydrogels based on nanocellulose. Carbohydr Polym 2022; 275:118741. [PMID: 34742444 DOI: 10.1016/j.carbpol.2021.118741] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 10/08/2021] [Accepted: 10/08/2021] [Indexed: 11/30/2022]
Abstract
In recent years, smart-responsive nanocellulose composite hydrogels have attracted extensive attention due to their unique porous substrate, hydrophilic properties, biocompatibility and stimulus responsiveness. At present, the research on smart response nanocellulose composite hydrogel mainly focuses on the selection of composite materials and the construction of internal chemical bonds. The common composite materials and connection methods used for preparation of smart response nanocellulose composite hydrogels are compared according to the different types of response sources such as temperature, pH and so on. The response mechanisms and the application prospects of different response types of nanocellulose composite hydrogels are summarized, and the transformation of internal ions, functional groups and chemical bonds, as well as the changes in mechanical properties such as modulus and strength are discussed. Finally, the shortcomings and application prospects of nanocellulose smart response composite hydrogels are summarized and prospected.
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Affiliation(s)
- Shuai Hu
- Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, PR China
| | - Yunfei Zhi
- Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, PR China.
| | - Shaoyun Shan
- Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, PR China.
| | - Yonghao Ni
- Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, PR China; Limerick Pulp and Paper Centre, University of New Brunswick, Fredericton E3B 5A3, Canada
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29
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Zhang Y, Liu L, Li N, Wang Y, Yue X. 3D scaffold fabricated with composite material for cell culture and its derived platform for safety evaluation of drugs. Toxicology 2021; 466:153066. [PMID: 34919984 DOI: 10.1016/j.tox.2021.153066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 12/01/2021] [Accepted: 12/09/2021] [Indexed: 12/27/2022]
Abstract
In order to overcome the weakness of conventional approaches for cell culture, and provide cells with more in vivo-like microenvironment for studying hepatotoxicity of drugs, "multiple-in-one" strategy was adopted to fabricate a 3D scaffold of silk fibroin/hydroxyapatite/poly lacticco-glycolic acid (SF/HA/PLGA), where HepG2 cells were cultivated and the toxicity of drugs to the cells was investigated. The prepared 3D scaffold proves to bear proper porosity, excellent mechanical property, steady pH environment and good biocompatibility for cell culture. Furthermore, the validity of the developed 3D-SF/HA/PLGA-scaffold based platform was verified by probing the toxicity of a known drug-induced liver injury (DILI) concern acetaminophen (APAP) to HepG2 cells. Eventually, an application of the platform to dioscin (a medicinal plant extract) reveals the hepatotoxicity of dioscin, which involves the inhibition of the expression of CYP3A4 mRNA in the cells. The developed 3D-SF/HA/PLGA-scaffold platform may become a universal avenue for safety evaluation of drugs.
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Affiliation(s)
- Yanni Zhang
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi, 710062, China.
| | - Le Liu
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi, 710062, China
| | - Na Li
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi, 710062, China
| | - Yihua Wang
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi, 710062, China
| | - Xuanfeng Yue
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering of Shaanxi Normal University, Xi'an, Shaanxi, 710062, China.
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30
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Lin J, Xu D, Liu Z, Jiang Y, Ren M, Xiang H, Yu B. Physicochemical and biological properties of carboxymethyl chitosan zinc (CMCS-Zn)/α‑calcium sulfate hemihydrate (α-CSH) composites. Mater Sci Eng C Mater Biol Appl 2021; 131:112496. [PMID: 34857282 DOI: 10.1016/j.msec.2021.112496] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 10/05/2021] [Accepted: 10/13/2021] [Indexed: 12/30/2022]
Abstract
To improve the osteoinductivity, antibacterial activity, and clinical application of calcium sulfate hemihydrate (CSH), carboxymethyl chitosan zinc (CMCS-Zn) and α-CSH were prepared using different mass ratios. The setting time and injectability of the CMCS-Zn/α-CSH composite were increased with increasing CMCS-Zn content. After adding different amounts of CMCS-Zn to α-CSH, the fine lamellar structure of CMCS-Zn was found by scanning electron microscopy (SEM), which is evenly distributed in the matrix of α-CSH. With the increase of CMCS-Zn, the pores on the surface gradually increased. After mixing CMCS-Zn and α-CSH, no new phase was measured by X-ray diffraction (XRD) and Fourier transform (FTIR) spectroscopy. The degradation rate of CMCS-Zn/α-CSH decreased with increasing CMCS-Zn content, and the pH was stable during the degradation process. The release of Zn2+ increased with increasing CMCS-Zn content, while the release of Ca2+ decreased. Extracts of CMCS-Zn/α-CSH composites up-regulated the osteoinduction and migration of rat bone marrow stem cells. The antibacterial ability of CMCS-Zn/α-CSH was evaluated as a function of CMCS-Zn content. In the rat bone defect model, 5% CMCS-Zn/α-CSH group revealed a higher volume and density of trabeculae by micro-CT 8 weeks after the operation. Therefore, CMCS-Zn/α-CSH was demonstrated to be an adjustable, degradable, substitute biomaterial (with osteogenesis-promoting effects) for use in bone defects, which also has antibacterial activity that can suppress bone infection.
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Favella P, Kissmann AK, Raber HF, Kubiczek DH, Bodenberger P, Bodenberger NE, Rosenau F. Diffusion-controlled release of the theranostic protein-photosensitizer Azulitox from composite of Fmoc-Phenylalanine Fibrils encapsulated with BSA hydrogels. J Biotechnol 2021; 341:51-62. [PMID: 34464649 DOI: 10.1016/j.jbiotec.2021.08.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 08/06/2021] [Accepted: 08/25/2021] [Indexed: 12/21/2022]
Abstract
Hydrogels offer a promising potential for the encapsulation and regulated release of drugs due to their biocompatibility and their tunable properties as materials. Only a limited number of systems and procedures enable the encapsulation of sensitive proteins. N-terminally fmoc-protected phenylalanine has been shown to self-assemble into a transparent, stable hydrogel It can be considered a supergelator due to the low amount of monomers necessary for hydrogelation (0.1% w/v), making it a good candidate for the encapsulation and stabilization of sensitive proteins. However, application options for this hydrogel are rather limited to those of many other fibril-based materials due to its intrinsic lack of mechanical strength and high susceptibility to changes in environmental conditions. Here, we demonstrate that the stability of a fibrillary system and the resulting release of the protein-photosensitizer Azulitox can be increased by combining the hydrogel with a tightly cross-linked BSA hydrogel. Azulitox is known to display cell-penetrating properties, anti-proliferative activity and has a distinctive fluorescence. Confocal microscopy and fluorescence measurements verified the maintenance of all essential functions of the encapsulated protein. In contrast, the combination of fibrillary and protein hydrogel resulted in a significant stabilization of the matrix and an adjustable release pattern for encapsulated protein.
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Naito M, Kitamura H, Koike M, Kusano H, Kusumoto T, Uchihori Y, Endo T, Hagiwara Y, Kiyono N, Kodama H, Matsuo S, Mikoshiba R, Takami Y, Yamanaka M, Akiyama H, Nishimura W, Kodaira S. Applicability of composite materials for space radiation shielding of spacecraft. Life Sci Space Res (Amst) 2021; 31:71-79. [PMID: 34689952 DOI: 10.1016/j.lssr.2021.08.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 08/17/2021] [Accepted: 08/18/2021] [Indexed: 06/13/2023]
Abstract
Energetic ion beam experiments with major space radiation elements, 1H, 4He, 16O, 28Si and 56Fe, have been conducted to investigate the radiation shielding properties of composite materials. These materials are expected to be used for parts and fixtures of space vehicles due to both their mechanical strength and their space radiation shielding capabilities. Low Z materials containing hydrogen are effective for shielding protons and heavy ions due to their high stopping power and large fragmentation cross section per unit mass. The stopping power of the composite materials used in this work is intermediate between that of aluminum and polyethylene, which are typical structural and shielding materials used in space. The total charge-changing cross sections per unit mass, σUM, of the composite materials are 1.3-1.8 times larger than that of aluminum. By replacing conventional aluminum used for spacecraft with commercially available composite (carbon fiber / polyether ether ketone), it is expected that the shielding effect is increased by ∼17%. The utilization of composite materials will help mitigate the space radiation hazard on future deep space missions.
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Affiliation(s)
- Masayuki Naito
- Radiation Measurement Research Group, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
| | - Hisashi Kitamura
- Radiation Measurement Research Group, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
| | - Masamune Koike
- Radiation Measurement Research Group, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
| | - Hiroki Kusano
- Radiation Measurement Research Group, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
| | - Tamon Kusumoto
- Radiation Measurement Research Group, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
| | - Yukio Uchihori
- Radiation Measurement Research Group, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
| | - Toshiaki Endo
- Space Systems Division, Integrated Defense & Space Systems, Mitsubishi Heavy Industries, Ltd., Aichi 455-8515, Japan
| | - Yusuke Hagiwara
- Space Systems Division, Integrated Defense & Space Systems, Mitsubishi Heavy Industries, Ltd., Aichi 455-8515, Japan
| | - Naoki Kiyono
- Space Systems Division, Integrated Defense & Space Systems, Mitsubishi Heavy Industries, Ltd., Aichi 455-8515, Japan
| | - Hiroaki Kodama
- Space Systems Division, Integrated Defense & Space Systems, Mitsubishi Heavy Industries, Ltd., Aichi 455-8515, Japan
| | - Shinobu Matsuo
- Space Systems Division, Integrated Defense & Space Systems, Mitsubishi Heavy Industries, Ltd., Aichi 455-8515, Japan
| | - Ryo Mikoshiba
- Space Systems Division, Integrated Defense & Space Systems, Mitsubishi Heavy Industries, Ltd., Aichi 455-8515, Japan
| | - Yasuhiro Takami
- Space Systems Division, Integrated Defense & Space Systems, Mitsubishi Heavy Industries, Ltd., Aichi 455-8515, Japan
| | - Masahiro Yamanaka
- Space Systems Division, Integrated Defense & Space Systems, Mitsubishi Heavy Industries, Ltd., Aichi 455-8515, Japan
| | - Hiromichi Akiyama
- Manufacturing Technology Research Department, Research & Innovation Center, Mitsubishi Heavy Industries, Ltd., Aichi 455-8515, Japan
| | - Wataru Nishimura
- Manufacturing Technology Research Department, Research & Innovation Center, Mitsubishi Heavy Industries, Ltd., Aichi 455-8515, Japan
| | - Satoshi Kodaira
- Radiation Measurement Research Group, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan.
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Lu L, Ma Y, Liu H, Dong R, Tan P, Yang L, Pan J. Controlled preparation of hollow Zn 0.3Cd 0.7S nanospheres modified by NiS 1.97 nanosheets for superior photocatalytic hydrogen production. J Colloid Interface Sci 2021; 606:1-9. [PMID: 34384961 DOI: 10.1016/j.jcis.2021.08.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 07/24/2021] [Accepted: 08/01/2021] [Indexed: 11/23/2022]
Abstract
Developing durable and efficient photocatalysts for H2 evolution is highly desirable to expedite current research on solar-chemical energy conversion. In this work, a novel photocatalytic H2 evolution system based on Zn0.3Cd0.7S/NiS1.97 nanocomposite was rationally designed for the first time. In this advanced composite structure, NiS1.97 nanosheets as a co-catalyst were intimately coupled to the inner surface of the hollow spherical Zn0.3Cd0.7S. The construction of the hollow spherical shell shortened the distance of charge migration to the surface site and increased the multiple absorption of incident light. The introduction of NiS1.97 nanosheets increased the light absorption capacity of the composite system and also greatly improved the separation and migration behavior of photo-generated carriers due to its narrower band gap and relatively low conduction band position, which had been confirmed by DRS, EIS and PL. As a result, the hollow Zn0.3Cd0.7S/NiS1.97 composite material exhibited excellent photocatalytic activity. At the loading amount of NiS1.97 up to 15 at.%, the hollow Zn0.3Cd0.7S/NiS1.97 composite exhibited the best photocatalytic activity with a corresponding H2 production rate of 22.637 mmol g-1h-1, which was 1.42 times and 1.85 times that of hollow Zn0.3Cd0.7S and solid Zn0.3Cd0.7S, respectively. Moreover, this novel catalyst also displayed a long-term stability without apparent debasement in H2 evolution activity. It is expected that this work could provide new inspiration to the design and development of other highly active photocatalytic systems for water splitting.
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He J, Song W, Huang X, Gao Z. Preparation, characterization, and catalytic activity of a novel MgO/expanded graphite for ozonation of Cu-EDTA. Environ Sci Pollut Res Int 2021; 28:39513-39523. [PMID: 33755889 DOI: 10.1007/s11356-021-13551-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 03/16/2021] [Indexed: 06/12/2023]
Abstract
Magnesium oxide/expanded graphite (MgO/EG) catalyst was synthesized and applied for enhancing the degradation of Cu-ethylenediaminetetraacetic acid (Cu-EDTA) in an aqueous solution. The MgO/EG catalyst was characterized by XRD, SEM, EDS, and FTIR. For assessing the catalytic activity of MgO/EG, essential influencing factors were investigated including catalyst dosage, O3 dosage, initial pH, initial Cu-EDTA concentration, and coexisting ions. The results show that the catalytic material showed high catalytic oxidation capacity for the Cu-EDTA removal in the MgO/EG/O3 system. 100% of Cu(II) and 73.2% of TOC removal efficiency could be achieved in the MgO/EG/O3 system at the reaction times of 90 min. This efficiency was higher than that seen for other systems, including O3 alone (Cu(II) 81.4%/TOC 60.6%), EG/O3 (84.2%/64.1), MgO/EG (< 4%/< 4%), and EG (< 4%/< 4%). A small decrease in the Cu(II) and TOC removal rate was observed after three runs in the stability and reusability experiments of the catalyst. Assays with radical scavenging experiments confirmed that MgO/EG-mediated oxidation was dependent on a hydroxyl radical pathway. The UV-vis spectra confirmed that the absorption peak of Cu-EDTA was gradually decreased and finally disappeared.
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Affiliation(s)
- Jun He
- School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, 066004, China.
- Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, Qinhuangdao, 066004, China.
- Hebei Key Laboratory of Applied Chemistry, Qinhuangdao, 066004, China.
| | - Wenchao Song
- School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, 066004, China
- Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, Qinhuangdao, 066004, China
- Hebei Key Laboratory of Applied Chemistry, Qinhuangdao, 066004, China
| | - Xiaohan Huang
- School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, 066004, China
- Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, Qinhuangdao, 066004, China
- Hebei Key Laboratory of Applied Chemistry, Qinhuangdao, 066004, China
| | - Zuoyu Gao
- School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, 066004, China
- Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, Qinhuangdao, 066004, China
- Hebei Key Laboratory of Applied Chemistry, Qinhuangdao, 066004, China
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de Lima LF, Ferreira AL, Maciel CC, Ferreira M, de Araujo WR. Disposable and low-cost electrochemical sensor based on the colorless nail polish and graphite composite material for tartrazine detection. Talanta 2021; 227:122200. [PMID: 33714472 DOI: 10.1016/j.talanta.2021.122200] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 01/29/2021] [Accepted: 02/03/2021] [Indexed: 02/08/2023]
Abstract
A new method to manufacture electrochemical devices based on the graphite and colorless nail polish (N-grap) film was developed for tartrazine (Tz) detection. Scanning Electron Microscopy (SEM) demonstrates that the composite material presents a high porous carbon structure. Cyclic voltammetry (CV) and Electrochemical Impedance Spectroscopy (EIS) were employed to electrochemically characterize the electrode material, which corroborates the porous structure of the N-graph due to the enhanced electroactive area (5.4-fold increase) and presented a heterogeneous electron transfer rate constant (k0) of 5.82 × 10-3 cm s-1 for potassium ferricyanide. The electrochemical determination of the Tz was carried out using square-wave voltammetry (SWV), under the optimized experimental conditions, which showed high sensitivity (0.793 A L mol-1) and a lower limit of detection (LOD) of 2.10 × 10-8 mol L-1 with a linear concentration ranging from 2.0 to 50.0 μmol L-1. The developed sensor was applied for the analysis of Tz in sports drink samples and the result obtained by N-grap device was statistically compared with a spectrophotometric method demonstrating good accordance and the accuracy of the proposed method. Based on these results, we believe that this new fabrication method to produce disposable and low-cost electrochemical devices can be an alternative method for in-field analysis of dye in commercial sport drink samples and other relevant applications.
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Affiliation(s)
- Lucas F de Lima
- Portable Chemical Sensors Lab, Department of Analytical Chemistry, Institute of Chemistry, State University of Campinas - UNICAMP, P.O. Box 6154, 13083-970, Campinas, SP, Brazil
| | - André L Ferreira
- Center of Science and Technology for Sustainability (CCTS), Federal University of São Carlos (UFSCar), Sorocaba, SP, Brazil
| | - Cristiane C Maciel
- Institute of Science and Technology, São Paulo State University (UNESP), 18087-180, Sorocaba, Brazil
| | - Marystela Ferreira
- Center of Science and Technology for Sustainability (CCTS), Federal University of São Carlos (UFSCar), Sorocaba, SP, Brazil
| | - William R de Araujo
- Portable Chemical Sensors Lab, Department of Analytical Chemistry, Institute of Chemistry, State University of Campinas - UNICAMP, P.O. Box 6154, 13083-970, Campinas, SP, Brazil.
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Li J, Jin J, Zou Y, Sun H, Zeng X, Huang X, Feng M, Kanatzidis MG. Efficient Removal of Cs + and Sr 2+ Ions by Granulous (Me 2NH 2) 4/3(Me 3NH) 2/3Sn 3S 7·1.25H 2O/Polyacrylonitrile Composite. ACS Appl Mater Interfaces 2021; 13:13434-13442. [PMID: 33705090 DOI: 10.1021/acsami.1c01983] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The need to effectively and selectively remove radioactive 137Cs and 90Sr from nuclear waste solutions persists to mitigate their environmental mobility and high radiotoxicity. Because it is difficult to effectively remove them from acidic environments that degrade most sorbents, new sorbent materials are highly desirable. Here, efficient removal of Cs+ and Sr2+ is achieved by the composite of layered tin sulfide (Me2NH2)4/3(Me3NH)2/3Sn3S7·1.25H2O (FJSM-SnS) and polyacrylonitrile (PAN) (FJSM-SnS/PAN). The granulous composite possesses regular particle morphology and good mechanical strength as an engineered form. It shows excellent acid-base and γ-irradiation resistance, high maximum adsorption capacities (qm) of 296.12 and 62.88 mg/g for Cs+ and Sr2+ ions, respectively, and high selectivity even in the presence of excess Na+ ions or using lake water. Impressively, qmCs of FJSM-SnS/PAN reaches 89.29 mg/g under even acidic conditions (pH = 2.5). The column loaded with FJSM-SnS/PAN granules exhibits high removal rates (R) toward low-concentration Cs+ and Sr2+ ions under both neutral and acidic conditions. Moreover, the composite can be recycled and reused with high RCs and RSr. This work highlights the great potential of metal sulfide ion-exchangers in engineered form for the efficient removal of Cs+ or Sr2+ ions, especially under acidic conditions, for radionuclide remediation.
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Affiliation(s)
- Jilong Li
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P.R. China
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P.R. China
| | - Jiance Jin
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Yanmin Zou
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P.R. China
| | - Haiyan Sun
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Xi Zeng
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Xiaoying Huang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P.R. China
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Meiling Feng
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, P.R. China
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Mercouri G Kanatzidis
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
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Makarov AV, Safonov AV, Konevnik YV, Teterin YA, Maslakov KI, Teterin AY, Karaseva YY, German KE, Zakharova EV. Activated carbon additives for technetium immobilization in bentonite-based engineered barriers for radioactive waste repositories. J Hazard Mater 2021; 401:123436. [PMID: 32763716 DOI: 10.1016/j.jhazmat.2020.123436] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 01/13/2020] [Accepted: 06/15/2020] [Indexed: 06/11/2023]
Abstract
Safe disposal of nuclear waste in a geologic repository will rely on natural geologic features and engineered barriers to greatly retard the movement of radionuclides from the repository. Clay minerals including bentonite are effective in retarding the migration of many radionuclides, but are ineffective for anionic radionuclides, of which pertechnetate is of particular concern owing to its relatively long half-life and the lack of natural isotopes that dilute it. Activated carbon is proposed as an additive material for reducing pertechnetate mobility in the nearfield. Activated carbon materials of different origins quantitatively sorb pertechnetate from aqueous solution under oxidizing conditions during the first day of contact, and sequential extraction showed that 73 % of this technetium is in the strongly bound fraction. X-ray photoelectron spectra (XPS) and extended X-ray absorption fine structure (EXAFS) spectra both demonstrated that no reduction of technetium occurred in the studied systems. The interaction of technetium with a composite material consisting of bentonite and activated carbon was studied at the first time. Effective technetium sorption was shown, with distribution coefficients (Kd) up to 740 cm3. g-1.
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Affiliation(s)
- A V Makarov
- Frumkin Institute of Physical Chemistry and Electrochemistry Russian Academy of Sciences, Moscow, Russia
| | - A V Safonov
- Frumkin Institute of Physical Chemistry and Electrochemistry Russian Academy of Sciences, Moscow, Russia.
| | - Yu V Konevnik
- Frumkin Institute of Physical Chemistry and Electrochemistry Russian Academy of Sciences, Moscow, Russia
| | - Yu A Teterin
- SRC "Kurchatov Institute,", Moscow, Russia; Lomonosov Moscow State University, Moscow, Russia
| | | | - A Yu Teterin
- Lomonosov Moscow State University, Moscow, Russia
| | - Ya Yu Karaseva
- Frumkin Institute of Physical Chemistry and Electrochemistry Russian Academy of Sciences, Moscow, Russia
| | - K E German
- Frumkin Institute of Physical Chemistry and Electrochemistry Russian Academy of Sciences, Moscow, Russia
| | - E V Zakharova
- Frumkin Institute of Physical Chemistry and Electrochemistry Russian Academy of Sciences, Moscow, Russia
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Lai WL, Saeedipour H, Goh KL. Dataset on open/blind hole-hole interaction in barely visible impact damaged composite laminates. Data Brief 2021; 34:106607. [PMID: 33354598 DOI: 10.1016/j.dib.2020.106607] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 10/27/2020] [Accepted: 11/25/2020] [Indexed: 11/22/2022] Open
Abstract
This dataset contains the mechanical properties and structural characteristics with images of the carbon fibre reinforced epoxy composite (CFRP) laminates with open/blind holes. The mechanical dataset are the fracture strength, strain at fracture, strain energy density for resilience, strain energy density to fracture and stiffness of the CFRP laminates for different setups (namely 1 hole, 2 holes parallel to applied load, and 2 holes normal to applied load) from pristine and barely visible impact damage (BVID) specimens, determine from in-plane compression test. The structural-related dataset include thermographs, images of BVID specimens, drilling-induced damage BVID specimens and video clips of crack propagation during in-plane compression testing.
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Vincent T, Vincent C, Dumazert L, Otazaghine B, Sonnier R, Guibal E. Fire behavior of innovative alginate foams. Carbohydr Polym 2020; 250:116910. [PMID: 33049885 DOI: 10.1016/j.carbpol.2020.116910] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 07/28/2020] [Accepted: 08/04/2020] [Indexed: 12/23/2022]
Abstract
A new biosourced composite foam (AF, associating foamed alginate matrix and orange peel filler) is successfully tested for fire-retardant properties. This material having similar thermal insulating properties and density than fire-retardant polyurethane foam (FR-PUF, a commercial product) shows promising enhanced properties for flame retardancy, as assessed by different methods such as thermogravimetric analysis (TGA), pyrolysis combustion flow calorimetry (PCFC) and a newly designed apparatus called RAPACES for investigating large-scale samples. All these methods confirm the promising properties of this alternative material in terms of fire protection (pHRR, THR, EHC, time-to-ignition, flame duration or production of residue), especially for heat flux not exceeding 50 kW m-2. At higher heat flux (i.e., 75 kW m-2), flame retardant properties tend to decrease but maintain at a higher level than FR-PUF. The investigation of the effect of AF thickness shows that the critical thickness (CT) is close to 1.5-1.7 cm: heat diffusion and material combustion are limited to the CT layer that protects the underlying layers from combustion. A multiplicity of factors can explain this behavior, such as: (a) negligible heat conduction, (b) low heat of combustion, (c) charring formation, and (d) water release. Water being released from underlying layers, dilutes the gases emitted during the combustion of superficial layers and promotes the flame extinction.
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Affiliation(s)
- Thierry Vincent
- IMT - Mines Ales, Polymers Hybrids and Composites (PCH), 6 Avenue De Clavières, F-30319 Alès Cedex, France
| | - Chloë Vincent
- IMT - Mines Ales, Polymers Hybrids and Composites (PCH), 6 Avenue De Clavières, F-30319 Alès Cedex, France
| | - Loïc Dumazert
- IMT - Mines Ales, Polymers Hybrids and Composites (PCH), 6 Avenue De Clavières, F-30319 Alès Cedex, France
| | - Belkacem Otazaghine
- IMT - Mines Ales, Polymers Hybrids and Composites (PCH), 6 Avenue De Clavières, F-30319 Alès Cedex, France
| | - Rodolphe Sonnier
- IMT - Mines Ales, Polymers Hybrids and Composites (PCH), 6 Avenue De Clavières, F-30319 Alès Cedex, France
| | - Eric Guibal
- IMT - Mines Ales, Polymers Hybrids and Composites (PCH), 6 Avenue De Clavières, F-30319 Alès Cedex, France.
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Akhoundi B, Nabipour M, Hajami F, Band SS, Mosavi A. Calculating Filament Feed in the Fused Deposition Modeling Process to Correctly Print Continuous Fiber Composites in Curved Paths. Materials (Basel) 2020; 13:ma13204480. [PMID: 33050351 PMCID: PMC7600913 DOI: 10.3390/ma13204480] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 10/01/2020] [Accepted: 10/07/2020] [Indexed: 11/17/2022]
Abstract
Fused deposition modeling (FDM) is a popular additive manufacturing (AM) method that has attracted the attention of various industries due to its simplicity, cheapness, ability to produce complex geometric shapes, and high production speed. One of the effective parameters in this process is the filament feed presented in the production G-code. The filament feed is calculated according to the layer height, the extrusion width, and the length of the printing path. All required motion paths and filling patterns created by commercial software are a set of straight lines or circular arcs placed next to each other at a fixed distance. In special curved paths, the distance of adjacent paths is not equal at different points, and due to the weakness of common commercial software, it is not possible to create curved paths for proper printing. The creation of a special computer code that can be used to make various functions of curved paths was investigated in this study. The filament feed parameter was also studied in detail. Next, by introducing a correction technique, the filament feed was changed on the curved path to uniformly distribute the polymer material. Variable-stiffness composite samples consisting of curved fibers can be produced with the proposed method. The high quality of the printed samples confirms the suggested code and technique.
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Affiliation(s)
- Behnam Akhoundi
- Additive Manufacturing Laboratory, Faculty of Mechanical Engineering, Tarbiat Modares University, Tehran 14115-143, Iran; (B.A.); (M.N.)
| | - Mojtaba Nabipour
- Additive Manufacturing Laboratory, Faculty of Mechanical Engineering, Tarbiat Modares University, Tehran 14115-143, Iran; (B.A.); (M.N.)
| | - Faramarz Hajami
- Department of Mechanical Engineering, Faculty of Mechatronics, Karaj Branch, Islamic Azad University, Karaj 3149968111, Iran;
| | - Shahab S. Band
- Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam
- Future Technology Research Center, College of Future, National Yunlin University of Science and Technology 123 University Road, Section 3, Douliou, Yunlin 64002, Taiwan
- Correspondence: (S.S.B.); (A.M.)
| | - Amir Mosavi
- Faculty of Civil Engineering, Technische Universität Dresden, 01069 Dresden, Germany
- School of Economics and Business, Norwegian University of Life Sciences, 1430 Ås, Norway
- Kando Kalman Faculty of Electrical Engineering, Obuda University, 1034 Budapest, Hungary
- Correspondence: (S.S.B.); (A.M.)
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Singh J, Mishra V. Modeling of adsorption flux in nickel-contaminated synthetic simulated wastewater in the batch reactor. J Environ Sci Health A Tox Hazard Subst Environ Eng 2020; 55:1059-1069. [PMID: 32532180 DOI: 10.1080/10934529.2020.1767983] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 05/05/2020] [Accepted: 05/06/2020] [Indexed: 06/11/2023]
Abstract
In the present investigation, physico-chemical characterization of composite material revealed the presence of fluffy surface structure with crystalline look and negatively charged surface functional groups. The study of adsorption flux by using dimensionless numbers φ (2.62), Nk (62.68) and λ (1.17 × 10-5) proved that adsorption of nickel ions on the surface of composite material was mostly film diffusion-limited with maximum surface area coverage coupled with weakened surface tension. The results of intraparticle diffusivity and Boyd plot model showed that at the onset of process, film diffusion was the primary mechanism involved and at the later stage intraparticle diffusion played a critical role as rate governing step. The values of film (0.65 × 10-8 cm2 sec-1) and pore diffusivity (1.8 × 10-12 cm2 sec-1) coefficients showed that the adsorption process is dependent upon two different types of diffusion namely film and pore diffusion. Overall, transport and reshuffling mechanism had no substantial role in adsorption dynamics of nickel ions on the surface of composite material. Sorption isotherm and kinetics modeling showed higher values of regression coefficients for Langmuir isotherm (R2 = 0.99) and pseudo-second-order kinetic model (R2 = 0.99) compared to other models. This showed that sorption of nickel followed monolayer coverage with chemisorption at optimized process parameters like pH 6, biosorbent dose 0.1 g/L, temperature 50 °C, agitation rate180 rpm, adsorbate concentration100 mg/L and contact time 60 minutes. The positive value of enthalpy of adsorption (ΔH = + 10.41 kJ/mole) and entropy (ΔS = +58.19 J/mol K) showed that binding of nickel ions on the surface of the composite material was endothermic with improved randomness at solid-liquid interface. The negative value of (ΔG = -6.4 to -8.67 kJ/mol) showed spontaneous nature of nickel adsorption on composite material in the liquid phase.
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Affiliation(s)
- Jyoti Singh
- School of Biochemical Engineering, IIT (BHU) Varanasi, Varanasi, Uttar Pradesh, India
| | - Vishal Mishra
- School of Biochemical Engineering, IIT (BHU) Varanasi, Varanasi, Uttar Pradesh, India
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Chenrayan V, Parthiban M, Venkatachalam C, Gelaw M. Experimental and optimised data set for hot extrusion of B 4C/Al 6061 composite using Taguchi coupled GRA technique. Data Brief 2020; 29:105389. [PMID: 32211461 PMCID: PMC7082519 DOI: 10.1016/j.dib.2020.105389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 02/27/2020] [Accepted: 02/28/2020] [Indexed: 11/19/2022] Open
Abstract
Modern aluminium composites reinforced with variety of hard particles become more usage in Industrial environment. But manufacturing of composites with homogenously distributed reinforcement becomes the challenge. To overcome this challenge, most of the Aluminium composite are undergone a secondary extrusion process. The data presented here are related to hot extrusion of round geometry to hexagonal section Al/B4C composite. Availability of data is extended to expose the optimal parameters of the process over the extrusion load and tensile strength of the extrudate. Ram speed, geometry of die profile, billet temperature and friction within the die and billet interface have been considered as chief process parameters which influence the extrusion load and strength of the product. Totally, nine experiments were conducted as per Taguchi's L9 orthogonal array to reach optimal parameters. Most influencing parameters with ranking significance have been arrived through ANOVA, MRPI and grey grade. Optimal parameters were compared with confirmation experiments and predicted one to justify the investigation
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Piorkowski D, Blackledge TA, Liao CP, Joel AC, Weissbach M, Wu CL, Tso IM. Uncoiling springs promote mechanical functionality of spider cribellate silk. J Exp Biol 2020; 223:jeb215269. [PMID: 32001544 DOI: 10.1242/jeb.215269] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 01/24/2020] [Indexed: 01/04/2023]
Abstract
Composites, both natural and synthetic, achieve novel functionality by combining two or more constituent materials. For example, the earliest adhesive silk in spider webs - cribellate silk - is composed of stiff axial fibers and coiled fibers surrounded by hundreds of sticky cribellate nanofibrils. Yet, little is known of how fiber types interact to enable capture of insect prey with cribellate silk. To understand the roles of each constituent fiber during prey capture, we compared the tensile performance of native-state and manipulated threads produced by the cribellate spider Psechrus clavis, and the adhesion of native threads along a smooth surface and hairy bee thorax. We found that the coiled fiber increases the work to fracture of the entire cribellate thread by up to 20-fold. We also found that the axial fiber breaks multiple times during deformation, an unexpected observation that indicates: (i) the axial fiber continues to contribute work even after breakage, and (ii) the cribellate nanofibrils may perform a previously unidentified role as a binder material that distributes forces throughout the thread. Work of adhesion increased on surfaces with more surface structures (hairy bee thorax) corresponding to increased deformation of the coiled fiber. Together, our observations highlight how the synergistic interactions among the constituents of this natural composite adhesive enhance functionality. These highly extensible threads may serve to expose additional cribellate nanofibrils to form attachment points with prey substrata while also immobilizing prey as they sink into the web due to gravity.
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Affiliation(s)
- Dakota Piorkowski
- Department of Life Science, Tunghai University, Taichung 40704, Taiwan
| | - Todd A Blackledge
- Department of Biology, Integrated Bioscience Program, The University of Akron, Akron, OH 44325, USA
| | - Chen-Pan Liao
- Department of Life Science, Tunghai University, Taichung 40704, Taiwan
- Department of Biology, National Museum of Natural Science, Taichung 40453, Taiwan
| | | | - Margret Weissbach
- Institute of Biology II, RWTH Aachen University, 52074 Aachen, Germany
| | - Chung-Lin Wu
- Center for Measurement Standards, Industrial Technology Research Institute, Hsinchu 30011, Taiwan
| | - I-Min Tso
- Department of Life Science, Tunghai University, Taichung 40704, Taiwan
- Center for Tropical Ecology and Biodiversity, Tunghai University, Taichung 40704, Taiwan
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Wu BL, Liu Y. [Advances in the research of antibacterial properties and composite materials of nanometer zinc oxide]. Zhonghua Shao Shang Za Zhi 2020; 35:890-893. [PMID: 31877615 DOI: 10.3760/cma.j.issn.1009-2587.2019.12.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Nanometer zinc oxide has become a new hotspot in the research of tissue engineering materials due to its excellent antibacterial properties, biocompatibility, and anti-tumor properties. In this paper, the existing research results were summarized, generalized, and analyzed. The antibacterial mechanism of nanometer zinc oxide was discussed in depth. The antibacterial properties and advantages of the latest nanometer zinc oxide composite materials were introduced in detail. In this review, we made prospect of the future application of nanometer zinc oxide.
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Affiliation(s)
- B L Wu
- Department of Burns and Plastic Surgery, the People's Liberation Army Joint Service Support Unit 940 Hospital, Lanzhou 730050, China
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Mizukami K, Ikeda T, Ogi K. Measurement of velocity and attenuation of ultrasonic guided wave for real-time estimation of cure-dependent anisotropic viscoelastic properties of carbon fiber-reinforced plastics. Ultrasonics 2019; 99:105952. [PMID: 31271952 DOI: 10.1016/j.ultras.2019.105952] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 06/24/2019] [Accepted: 06/24/2019] [Indexed: 06/09/2023]
Abstract
An ultrasonic guided wave-based cure monitoring technique is developed to estimate cure-dependent anisotropic viscoelastic properties of carbon fiber reinforced plastics (CFRPs). The guided wave propagating in the transverse direction of a CFRP was measured during a cure process and the energy velocity and attenuation were obtained by signal processing. A micromechanics model and transfer matrix method were used to express the energy velocity and attenuation as functions of only the complex Young's modulus of the resin. The complex Young's modulus of the resin was estimated from the measurement results using response surfaces of the relationship between the energy velocity, attenuation and the resin complex modulus. It was verified that the estimated storage modulus and loss modulus showed reasonable values and behavior. The development of the anisotropic viscoelastic property of CFRPs can be fully determined in real time using this technique.
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Affiliation(s)
- Koichi Mizukami
- Department of Civil and Environmental Engineering, Ehime University, 7908577 Bunkyo-cho 3, Matsuyama-shi, Ehime, Japan.
| | - Takahiro Ikeda
- Department of Civil and Environmental Engineering, Ehime University, 7908577 Bunkyo-cho 3, Matsuyama-shi, Ehime, Japan
| | - Keiji Ogi
- Department of Civil and Environmental Engineering, Ehime University, 7908577 Bunkyo-cho 3, Matsuyama-shi, Ehime, Japan
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Houaoui A, Lyyra I, Agniel R, Pauthe E, Massera J, Boissière M. Dissolution, bioactivity and osteogenic properties of composites based on polymer and silicate or borosilicate bioactive glass. Mater Sci Eng C Mater Biol Appl 2020; 107:110340. [PMID: 31761244 DOI: 10.1016/j.msec.2019.110340] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 10/17/2019] [Accepted: 10/17/2019] [Indexed: 01/13/2023]
Abstract
Bioactive glass (BAG)/Poly (Lactic Acid) (PLA) composites have great potential for bone tissue engineering. The interest in these materials is to obtain a scaffold with tailorable properties bringing together the advantages of the composites' constituents such as the biodegradability, bioactivity and osteoinduction. The materials studied are PLA/13-93 and PLA/13-93B20 (20% of SiO2 is replaced with B2O3 in the 13-93 composition). To characterize them, they were dissolved in TRIS buffer and Simulated Body Fluid (SBF) in vitro. Over the 10 weeks of immersion in TRIS, the ion release from the composites was constant. Following immersion in SBF for 2 weeks, the hydroxyapatite (HA) layer was found to precipitate at the composites surface. By adding Boron, both these reactions were accelerated, as the borosilicate glass dissolves faster than pure silicate glass alone. Polymer degradation was studied and showed that during immersion, the pure PLA rods maintained their molecular weight whereby the composites decreased with time, but despite this the mechanical properties remained stable for at least 10 weeks. Their ability to induce osteogenic differentiation of myoblastic cells was also demonstrated with cell experiments showing that C2C12 cells were able to proliferate and spread on the composites. The Myosin Heavy Chain and Osteopontin were tracked by immunostaining the cells and showed a suppression of the myosin signal and the presence of osteopontin, when seeded onto the composites. This proves osteoinduction occurred. In studying the mineralization of the cells, it was found that BAG presence conditions the synthesizing of mineral matter in the cells. The results show that these composites have a potential for bone tissue engineering.
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Songsaeng S, Thamyongkit P, Poompradub S. Natural rubber/reduced-graphene oxide composite materials: Morphological and oil adsorption properties for treatment of oil spills. J Adv Res 2019; 20:79-89. [PMID: 31245157 PMCID: PMC6582200 DOI: 10.1016/j.jare.2019.05.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 05/07/2019] [Accepted: 05/30/2019] [Indexed: 11/29/2022] Open
Abstract
Natural rubber/rGO composite foam was used as an oil sorbent. Addition of rGO enhanced the oil adsorption capacity and strength of NR sorbent foam. Inclusion of 0.5 phr rGO into NR increased the crude oil adsorption capacity to 17.04 g g−1. Oil adsorption mechanism of the sorbent materials was proposed. Reusability of the NR/rGO sorbent was greater than 70% oil adsorption for 30 cycles.
A green sorbent material was fabricated through the simple addition of reduced graphene oxide (rGO) to natural rubber (NR) latex. The effect of rGO content in the NR foam on petroleum oil adsorption was investigated. The addition of rGO in NR increased the petroleum oil adsorption capacity of the resulting NR/rGO (NRG) composite foam (12–21 g g−1) with respect to those of the pure NR foam (8–15 g g−1) and a commercial sorbent (6–7 g g−1). The adsorption capacity was optimal for 0.5 phr rGO (NRG-0.5). Further, the environmental conditions (temperature and waves) affected the oil adsorption capacity of the sorbent materials. The adsorption kinetics of the sorbent materials for crude AXL oil was best described with pseudo-second-order kinetics. The interparticle diffusion model revealed three steps whereas the adsorption isotherms approximated the Langmuir isotherms. Moreover, the oil adsorption mechanisms of the NR and NRG sorbent materials were compared to that of a commercial sorbent. The high elasticity of the NRG-0.5 composite foam improved not only the oil adsorption capacity but also the reusability of the sorbent material. The presence of rGO increased the strength of the NRG-0.5 compared to that of pure NR, which resulted in a high-performance and reusable material with an oil removal efficiency higher than 70% after 30 uses.
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Affiliation(s)
- Siripak Songsaeng
- Program in Hazardous Substance and Environmental Management, Chulalongkorn University, Bangkok 10330, Thailand
| | - Patchanita Thamyongkit
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Sirilux Poompradub
- Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.,Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok 10330, Thailand.,Green Materials for Industrial Application Research Unit, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
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Lete C, Marin M, Anghel EM, Preda L, Matei C, Lupu S. Sinusoidal voltage electrodeposition of PEDOT-Prussian blue nanoparticles composite and its application to amperometric sensing of H 2O 2 in human blood. Mater Sci Eng C Mater Biol Appl 2019; 102:661-9. [PMID: 31147039 DOI: 10.1016/j.msec.2019.04.086] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 04/25/2019] [Accepted: 04/25/2019] [Indexed: 11/20/2022]
Abstract
A selective electrochemical sensor based on poly(3,4-ethylenedioxythiophene) (PEDOT) - Prussian blue nanoparticles (PBNPs) for hydrogen peroxide (H2O2) determination was prepared by innovative sinusoidal voltage (SV) method. The successful incorporation of citrate-stabilized PBNPs into PEDOT matrix was confirmed by energy dispersive X-ray analysis (EDX), Raman spectroscopy, UV-Vis spectroelectrochemistry and cyclic voltammetry measurements. The SV preparation method provides a PEDOT-PBNPs coating with rough surface morphology and good electrocatalytic activity toward H2O2 reduction. The amperometric response of PEDOT-PBNPs-based sensor at -50 mV vs. Ag/AgCl is linear within the range of concentrations from 5 μM to 1 mM H2O2 with a detection limit of 1.4 μM H2O2. The proposed Pt/PEDOT-PBNPs sensor displays good repeatability, reproducibility, operational stability as well as good selectivity toward H2O2 determination in the presence of interfering species like dopamine (DA), uric acid (UA), KNO2 glucose (Glu), KNO3 and ascorbic acid (AA), and was successfully applied to H2O2 determination in human blood samples without biofouling.
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Lin Y, Ma J, Liu W, Li Z, He K. Efficient removal of dyes from dyeing wastewater by powder activated charcoal/titanate nanotube nanocomposites: adsorption and photoregeneration. Environ Sci Pollut Res Int 2019; 26:10263-10273. [PMID: 30761491 DOI: 10.1007/s11356-019-04218-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 01/09/2019] [Indexed: 05/12/2023]
Abstract
Effective removal of dyes has been widely investigated by the adsorption of powder activated carbon and photodegradation by titanate nanotubes (TNTs). In this study, a facile one-step alkaline-hydrothermal method was applied to synthesize powder activated charcoal-supported TNTs (TNTs@PAC). Adsorption of three representative dyes, i.e., cationic methylene blue (MB), cationic rhodamine B (RhB), and anionic methyl orange (MO), onto TNTs@PAC was evaluated by the adsorption kinetic experiments and adsorption isotherms. The first 30 min is the main time phase of adsorption, and MB, RhB, and MO obtained the experimental equilibrium uptake of 173.30, 115.06, and 106.85 mg/g, respectively, indicating their final removal efficiencies of 100%, 69.36%, and 64.11%, respectively. The increase of pH value reduced adsorption capacity of MO (from 149.35 mg/g at pH of 2 to 96.99 mg/g at pH of 10), but facilitated MB adsorption, which was attributed to the charge distribution on the surface of TNTs@PAC and the charge of dyes at different pH. Furthermore, good capacity recoveries of MB by TNTs@PAC (> 99%) were observed after UV irradiation treatment, indicating the used TNTs@PAC can be easily recycled for the adsorption of MB by UV irradiation. Overall, TNTs@PAC is an effective process for remediation of dye-contaminated water because of its adsorption performance for all selected dyes and good regeneration capacity for MB.
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Affiliation(s)
- Yingchao Lin
- College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China
| | - Jun Ma
- College of Environment and Safety, Taiyuan University of Science and Technology, Taiyuan, 030024, China
| | - Wen Liu
- College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
| | - Zeyu Li
- College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China
| | - Kai He
- Research Centre for Environmental Quality Management, Kyoto University, 1-2 Yumihama, Otsu, Shiga, Japan.
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Zhang Y, Liang Y, Da L, Xie H. [A rapid pathological preparation method for composite material observation]. Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2019; 33:80-84. [PMID: 30644266 DOI: 10.7507/1002-1892.201806094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Objective To explore a simple and rapid pathological slices method to observe the porous structure and the composition distribution of composite materials. Methods Taking polyurethane/small intestinal submucosa (PU/SIS) composite as an example, PU/SIS was OCT-embedded and sliced into sections by frozen section technology, after which general observation of the section integrity was carried out. After dyed with water-soluble eosin in alcoholic solution, the staining effect and the porous structure of the composite were observed under light field microscope. Sections were sealed with five different sealing methods. Group A: sealing piece using glycerogelatin method; group B: anhydrous alcohol dehydration→transparency using TO transparent reagent→sealing piece using neutral quick drying glue; group C: color separation using deionized water→air-drying→sealing piece using neutral quick drying glue; group D: air-drying→transparency using TO transparent reagent→sealing piece using neutral quick drying glue; group E: air-drying→sealing piece using neutral quick drying glue. Then, the morphology and the components distribution of the composite were observed under light field microscope, and the simple and feasible method was selected as optimum method. Results From general observation, the frozen section of the PU/SIS composite, which was 6 μm in thickness, was complete and continuous. Although the outline of the material and the porous structure in the sections could be observed clearly under light field microscope, the two components still could not be identified by using eosin staining method. After sealing piece, the material components in groups A, B, and C still could not be identified or be dissolved and deformed; the morphology of the material in groups D and E were preserved and the two components in the composite were clearly visible. Conclusion The morphology and the components distribution of PU/SIS frozen sections can be characterized after soluble eosin staining and neutral quick drying glue sealing.
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Affiliation(s)
- Yi Zhang
- Research Core Facility of West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
| | - Yan Liang
- Research Core Facility of West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
| | - Lincui Da
- Laboratory of Stem Cell and Tissue Engineering, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
| | - Huiqi Xie
- Laboratory of Stem Cell and Tissue Engineering, West China Hospital, Sichuan University, Chengdu Sichuan, 610041,
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