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Liu A, Li C, Su Z, Yuan H, He W, Zhang L, Cheng Z. Ultratrace Uranium Removal by Covalent Organic Frameworks on an In-Situ-Decorated Sponge as Integral Materials. ACS APPLIED MATERIALS & INTERFACES 2024; 16:53324-53332. [PMID: 39316711 DOI: 10.1021/acsami.4c11715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/26/2024]
Abstract
Herein, a sulfonated covalent organic framework (COF-SO3H) is prepared in situ on melamine sponge (MS) to produce MS@COF-SO3H as integral materials by a one-pot synthesis in water at room temperature, for facile deep removal of trace uranium-containing wastewater. The -SO3H on the COFs is able to form complexation with UO22+ through strong coordination interactions, and MS@COF-SO3H is therefore highly selective for UO22+ (Kd = 52603 mL g-1). The adsorption efficiency of MS@COF-SO3H-3 can reach 97.9% and 87.5% when the initial UO22+ concentration is 100 and 5 μg L-1, respectively, and the minimum residual UO22+ concentration is as low as 0.478 μg L-1, far lower than that in previous reports. In addition, MS@COF-SO3H exhibits excellent durability as an adsorbent, and its adsorption efficiency for UO22+ is still as high as 92.4% even after 5 cycles of recycling. The mild preparation conditions and excellent performance of MS@COF-SO3H make it quite promising as a highly efficient adsorbent for uranium removal. This work provides an important clue to prepare adsorbents facilely for nuclear wastewater deep treatment.
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Affiliation(s)
- An Liu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, and College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Chunyu Li
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, and College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Zhou Su
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, and College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Huzhe Yuan
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, and College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Weiwei He
- State Key Laboratory of Radiation Medicine and Protection, School of Radiological and Interdisciplinary Sciences, Soochow University, Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou 215123, China
| | - Lifen Zhang
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, and College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Zhenping Cheng
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, and College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
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Dolatkhah A, Dewani C, Kazem-Rostami M, Wilson LD. Magnetic Silver Nanoparticles Stabilized by Superhydrophilic Polymer Brushes with Exceptional Kinetics and Catalysis. Polymers (Basel) 2024; 16:2500. [PMID: 39274133 PMCID: PMC11398182 DOI: 10.3390/polym16172500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2024] [Revised: 08/27/2024] [Accepted: 08/31/2024] [Indexed: 09/16/2024] Open
Abstract
Stimuli-responsive catalysts with exceptional kinetics and complete recoverability for efficient recyclability are essential in, for example, converting pollutants and hazardous organic compounds into less harmful chemicals. Here, we used a novel approach to stabilize silver nanoparticles (NPs) through magneto/hydro-responsive anionic polymer brushes that consist of poly (acrylic acid) (PAA) moieties at the amine functional groups of chitosan. Two types of responsive catalyst systems with variable silver loading (wt.%) of high and low (PAAgCHI/Fe3O4/Ag (H, L)) were prepared. The catalytic activity was evaluated by monitoring the reduction of organic dye compounds, 4-nitrophenol and methyl orange in the presence of NaBH4. The high dispersity and hydrophilic nature of the catalyst provided exceptional kinetics for dye reduction that surpassed previously reported nanocatalysts for organic dye reduction. Dynamic light scattering (DLS) measurements were carried out to study the colloidal stability of the nanocatalysts. The hybrid materials not only showed enhanced colloidal stability due to electrostatic repulsion among adjacent polymer brushes but also offered more rapid kinetics when compared with as-prepared Ag nanoparticles (AgNPs), which results from super-hydrophilicity and easy accumulation/diffusion of dye species within polymer brushes. Such remarkable kinetics, biodegradability, biocompatibility, low cost and facile magnetic recoverability of the Ag nanocatalysts reported here contribute to their ranking among the top catalyst systems reported in the literature. It was observed that the apparent catalytic rate constant for the reduction of methyl orange dye was enhanced, PAAgCHI/Fe3O4/Ag (H) ca. 35-fold and PAAgCHI/Fe3O4/Ag (L) ca. 23-fold, when compared against the as prepared AgNPs. Finally, the regeneration and recyclability of the nanocatalyst systems were studied over 15 consecutive cycles. It was demonstrated that the nanomaterials display excellent recyclability without a notable loss in catalytic activity.
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Affiliation(s)
- Asghar Dolatkhah
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada
| | - Chandni Dewani
- Department of Chemical Engineering, Malaviya National Institute of Technology Jaipur, Jawahar Lal Nehru Marg, Jhalana Gram, Malviya Nagar, Jaipur 302017, Rajasthan, India
| | - Masoud Kazem-Rostami
- Department of Chemistry, Northwestern University, Evanston, IL 60208, USA
- Faculty of Science and Engineering, Macquarie University, North Ryde, NSW 2109, Australia
| | - Lee D Wilson
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada
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Yan H, Wang P, Li L, Zhao Z, Xiang Y, Guo H, Yang B, Yang X, Li K, Li Y, He X, You Y. Development Status of Solar-Driven Interfacial Steam Generation Support Layer Based on Polymers and Biomaterials: A Review. Polymers (Basel) 2024; 16:2427. [PMID: 39274060 PMCID: PMC11397863 DOI: 10.3390/polym16172427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2024] [Revised: 08/23/2024] [Accepted: 08/23/2024] [Indexed: 09/16/2024] Open
Abstract
With the increasing shortage of water resources and the aggravation of water pollution, solar-driven interfacial steam generation (SISG) technology has garnered considerable attention because of its low energy consumption, simple operation, and environmental friendliness. The popular multi-layer SISG evaporator is composed of two basic structures: a photothermal layer and a support layer. Herein, the support layer underlies the photothermal layer and carries out thermal management, supports the photothermal layer, and transports water to the evaporation interface to improve the stability of the evaporator. While most research focuses on the photothermal layer, the support layer is typically viewed as a supporting object for the photothermal layer. This review focuses on the support layer, which is relatively neglected in evaporator development. It summarizes existing progress in the field of multi-layer interface evaporators, based on various polymers and biomaterials, along with their advantages and disadvantages. Specifically, mainly polymer-based support layers are reviewed, including polymer foams, gels, and their corresponding functional materials, while biomaterial support layers, including natural plants, carbonized biomaterials, and other innovation biomaterials are not. Additionally, the corresponding structure design strategies for the support layer were also involved. It was found that the selection and optimal design of the substrate also played an important role in the efficient operation of the whole steam generation system. Their evolution and refinement are vital for advancing the sustainability and effectiveness of interfacial evaporation technology. The corresponding potential future research direction and application prospects of support layer materials are carefully presented to enable effective responses to global water challenges.
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Affiliation(s)
- Haipeng Yan
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, China
| | - Pan Wang
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, China
| | - Lingsha Li
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, China
| | - Zixin Zhao
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, China
| | - Yang Xiang
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, China
| | - Haoqian Guo
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, China
| | - Boli Yang
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, China
| | - Xulin Yang
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, China
| | - Kui Li
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, China
| | - Ying Li
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, China
| | - Xiaohong He
- School of Automation, Chengdu University of Information Technology, Chengdu 610225, China
| | - Yong You
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China
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Wu S, Luo H, Li S, Zheng Z, Long Q, Wei C, Rong H. Polydopamine/chitosan hydrogels-functionalized polyurethane foams in situ decorated with silver nanoparticles for water disinfection. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 366:121858. [PMID: 39018838 DOI: 10.1016/j.jenvman.2024.121858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 07/01/2024] [Accepted: 07/12/2024] [Indexed: 07/19/2024]
Abstract
A new facile route to decorate polyurethane foams (PUF) with dense and uniform silver nanoparticles (AgNPs) to ensure efficient and long-term water disinfection is proposed. The antibacterial sponge was fabricated by sequential treatment with chitosan hydrogels grafting, polydopamine (PDA) coating, and finally in situ growth of AgNPs on the surface of substrate. The morphologies, chemical composition, crystalline nature, mechanical property, and swelling capacity of the composite were characterized. Its silver release behavior and bactericidal performances against Escherichia coli (E. coli) were evaluated. Results show that the composite demonstrated higher mechanical strength (compression strength, 51.34 kPa) and a rapid swelling rate with an equilibrium swelling ratio of 18.2 g/g. It possessed a higher loading amount of AgNPs (35.87 mg/g) than that of PUF@Ag (8.21 mg/g) and restricted the cumulative silver release of below 0.05% after 24-h immersion in water. Besides, it presented efficient bactericidal activity with complete reduction of E. coli with 10 min of contact time. The strong bactericidal action was probably governed by strengthening the contact between AgNPs immobilized on the substrate and bacteria cells. Furthermore, the composite demonstrated exceptional reusability for five cycles and exhibited a superior processing capacity in the flow test. Finally, the composite could effectively disinfect the natural water sample like a river in 30 min under real conditions.
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Affiliation(s)
- Shuhan Wu
- School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Huayong Luo
- School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China.
| | - Shiyin Li
- School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Zexin Zheng
- School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Qingwu Long
- College of Light Chemical Industry and Materials Engineering, Shunde Polytechnic, Foshan, 528333, China
| | - Chunhai Wei
- School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Hongwei Rong
- School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China
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Li J, Xu X, Ma X, Cui M, Wang X, Chen J, Zhu J, Chen J. Antimicrobial Nonisocyanate Polyurethane Foam Derived from Lignin for Wound Healing. ACS APPLIED BIO MATERIALS 2024; 7:1301-1310. [PMID: 38305746 DOI: 10.1021/acsabm.3c01257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
Medical dressings, as a cover for wounds, can replace damaged skin in the wound healing process to play a temporary barrier role, avoid or control wound infection, and provide a favorable environment for wound healing. Therefore, there is an urgent need for medical antimicrobial dressings for the treatment of chronic wounds. Although traditional polyurethane foam has been widely used in medical dressings, conventional polyurethane foams are primarily prepared using nonbiocompatible isocyanate-based compounds, which are potentially hazardous for both operators and applications in the medical field. Here, we propose nonisocyanate polyurethane foams naturally derived from lignin by enzymatic lignin alkylation, cyclic carbonation modification, and polymerization with diamine and the addition of a blowing agent. Silver nanoparticle solution was added during foaming to confer antimicrobial properties. This lignin-based nonisocyanate polyurethane/silver composite foam (named NIPU foam-silver) using a green synthesis method has good mechanical properties, which can be used to manufacture polyurethane/silver foams, and thermal and antimicrobial properties. Notably, NIPU foam-Ag showed more than 95% bactericidal efficacy against both Escherichia coli and Staphylococcus aureus within 4 h. Evaluation of in vitro wounds in mice showed that this antimicrobial composite foam rapidly promotes wound healing and repairs damaged tissue. This suggests that this biobased biodegradable antimicrobial foam has significant scope for clinical applications in wound management.
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Affiliation(s)
- Jingrui Li
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Xiaobo Xu
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Xiaozhen Ma
- Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province, Laboratory of Polymers and Composites, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Minghui Cui
- Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province, Laboratory of Polymers and Composites, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Xiaolin Wang
- Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province, Laboratory of Polymers and Composites, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Jing Chen
- Institute of Medical Sciences, The Second Hospital & Shandong University Center for Orthopaedics, Cheeloo College of Medicine, Shandong University, Jinan 250033, China
| | - Jin Zhu
- Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province, Laboratory of Polymers and Composites, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Jing Chen
- Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province, Laboratory of Polymers and Composites, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
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Qu Z, Huang L, Guo M, Sun T, Xu X, Gao Z. Application of novel polypyrrole/melamine foam auxiliary electrode in promoting electrokinetic remediation of Cr(VI)-contaminated soil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 876:162840. [PMID: 36924972 DOI: 10.1016/j.scitotenv.2023.162840] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 02/22/2023] [Accepted: 03/09/2023] [Indexed: 06/18/2023]
Affiliation(s)
- Zhengjun Qu
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
| | - Lihui Huang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China.
| | - Mengmeng Guo
- Jinan Ecological and Environmental Monitoring Center, Jinan 250000, China
| | - Ting Sun
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
| | - Xiaoshen Xu
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
| | - Zhenhui Gao
- Institute of Eco-Environmental Forensics of Shandong University, Qingdao 266237, China
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Dey A, Yadav M, Kumar D, Dey AK, Samal S, Tanwar S, Sarkar D, Pramanik SK, Chaudhuri S, Das A. A combination therapy strategy for treating antibiotic resistant biofilm infection using a guanidinium derivative and nanoparticulate Ag(0) derived hybrid gel conjugate. Chem Sci 2022; 13:10103-10118. [PMID: 36128224 PMCID: PMC9430544 DOI: 10.1039/d2sc02980d] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Accepted: 07/22/2022] [Indexed: 11/25/2022] Open
Abstract
Bacteria organized in biofilms show significant tolerance to conventional antibiotics compared to their planktonic counterparts and form the basis for chronic infections. Biofilms are composites of different types of extracellular polymeric substances that help in resisting several host-defense measures, including phagocytosis. These are increasingly being recognized as a passive virulence factor that enables many infectious diseases to proliferate and an essential contributing facet to anti-microbial resistance. Thus, inhibition and dispersion of biofilms are linked to addressing the issues associated with therapeutic challenges imposed by biofilms. This report is to address this complex issue using a self-assembled guanidinium-Ag(0) nanoparticle (AD-L@Ag(0)) hybrid gel composite for executing a combination therapy strategy for six difficult to treat biofilm-forming and multidrug-resistant bacteria. Improved efficacy was achieved primarily through effective biofilm inhibition and dispersion by the cationic guanidinium ion derivative, while Ag(0) contributes to the subsequent bactericidal activity on planktonic bacteria. Minimum Inhibitory Concentration (MIC) of the AD-L@Ag(0) formulation was tested against Acinetobacter baumannii (25 μg mL-1), Pseudomonas aeruginosa (0.78 μg mL-1), Staphylococcus aureus (0.19 μg mL-1), Klebsiella pneumoniae (0.78 μg mL-1), Escherichia coli (clinical isolate (6.25 μg mL-1)), Klebsiella pneumoniae (clinical isolate (50 μg mL-1)), Shigella flexneri (clinical isolate (0.39 μg mL-1)) and Streptococcus pneumoniae (6.25 μg mL-1). Minimum bactericidal concentration, and MBIC50 and MBIC90 (Minimum Biofilm Inhibitory Concentration at 50% and 90% reduction, respectively) were evaluated for these pathogens. All these results confirmed the efficacy of the formulation AD-L@Ag(0). Minimum Biofilm Eradication Concentration (MBEC) for the respective pathogens was examined by following the exopolysaccharide quantification method to establish its potency in inhibition of biofilm formation, as well as eradication of mature biofilms. These effects were attributed to the bactericidal effect of AD-L@Ag(0) on biofilm mass-associated bacteria. The observed efficacy of this non-cytotoxic therapeutic combination (AD-L@Ag(0)) was found to be better than that reported in the existing literature for treating extremely drug-resistant bacterial strains, as well as for reducing the bacterial infection load at a surgical site in a small animal BALB/c model. Thus, AD-L@Ag(0) could be a promising candidate for anti-microbial coatings on surgical instruments, wound dressing, tissue engineering, and medical implants.
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Affiliation(s)
- Ananta Dey
- CSIR - Central Salt and Marine Chemical Research Institute Bhavnagar Gujarat India
- Indian Institute of Science Education and Research Kolkata Mohanpur 741246 West Bengal India
| | - Manisha Yadav
- Translational Health Science and Technology Institute (THSTI) Faridabad 121001 Haryana India
| | - Deepak Kumar
- Translational Health Science and Technology Institute (THSTI) Faridabad 121001 Haryana India
| | - Anik Kumar Dey
- CSIR - Central Salt and Marine Chemical Research Institute Bhavnagar Gujarat India
| | - Sweety Samal
- Translational Health Science and Technology Institute (THSTI) Faridabad 121001 Haryana India
| | - Subhash Tanwar
- Translational Health Science and Technology Institute (THSTI) Faridabad 121001 Haryana India
| | - Debrupa Sarkar
- Translational Health Science and Technology Institute (THSTI) Faridabad 121001 Haryana India
| | - Sumit Kumar Pramanik
- CSIR - Central Salt and Marine Chemical Research Institute Bhavnagar Gujarat India
| | - Susmita Chaudhuri
- Translational Health Science and Technology Institute (THSTI) Faridabad 121001 Haryana India
| | - Amitava Das
- Indian Institute of Science Education and Research Kolkata Mohanpur 741246 West Bengal India
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Jin L, Pan Q, Li X, Su C, Wang Z, Wang H, Huang L. Preparation of Three-Dimensional MF/Ti 3C 2T x/PmPD by Interfacial Polymerization for Efficient Hexavalent Chromium Removal. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2838. [PMID: 36014701 PMCID: PMC9413116 DOI: 10.3390/nano12162838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 08/16/2022] [Accepted: 08/17/2022] [Indexed: 06/15/2023]
Abstract
Heavy metal pollution is a serious threat to human health and the ecological environment, but adsorption technology based on nano adsorbents can effectively treat the crisis. However, due to the nanoscale effect, nano adsorbents have some crucial shortcomings, such as recycling difficulty and the loss of nanoparticles, which seriously limit their application. The feasible assembly of nano adsorbents is an accessible technology in urgent need of a breakthrough. In this study, three-dimensional (3D) adsorbent (MF/Ti3C2Tx/PmPD) with excellent performance and favorable recyclability was prepared by interfacial polymerization with melamine foam (MF) as the framework, two-dimensional (2D) titanium carbide (Ti3C2Tx) as the bridge and Poly (m-Phenylenediamine) (PmPD) as the active nano component. The morphology, structure, mechanical property of MF/Ti3C2Tx/PmPD and reference MF/PmPD were investigated through a scanning electron microscope (SEM), Fourier transformed infrared spectra (FT-IR), Raman scattering spectra and a pressure-stress test, respectively. Owning to the regulation of Ti3C2Tx on the morphology and structure of PmPD, MF/Ti3C2Tx/PmPD showed excellent adsorption capacity (352.15 mg/g) and favorable cycling performance. R-P and pseudo-second-order kinetics models could well describe the adsorption phenomenon, indicating that the adsorption process involved a composite process of single-layer and multi-layer adsorption and was dominated by chemical adsorption. In this research, the preparation mechanism of MF/Ti3C2Tx/PmPD and the adsorption process of Cr(VI) were systematically investigated, which provided a feasible approach for the feasible assembly and application of nano adsorbents in the environmental field.
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Affiliation(s)
- Linfeng Jin
- School of Materials Science and Engineering, Central South University, Changsha 410083, China
- School of Resources and Environment, Hunan University of Technology and Business, Changsha 410205, China
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Qinglin Pan
- School of Materials Science and Engineering, Central South University, Changsha 410083, China
| | - Xiaorui Li
- School of Resources and Environment, Hunan University of Technology and Business, Changsha 410205, China
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Changqing Su
- School of Resources and Environment, Hunan University of Technology and Business, Changsha 410205, China
| | - Zhongyu Wang
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
- Chinese National Engineering Research Center for Control and Treatment of Heavy Metals Pollution, Changsha 410083, China
| | - Haiying Wang
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
- Chinese National Engineering Research Center for Control and Treatment of Heavy Metals Pollution, Changsha 410083, China
| | - Lei Huang
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
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Paghi A, Corsi M, Corso S, Mariani S, Barillaro G. In situ controlled and conformal coating of polydimethylsiloxane foams with silver nanoparticle networks with tunable piezo-resistive properties. NANOSCALE HORIZONS 2022; 7:425-436. [PMID: 35244124 DOI: 10.1039/d1nh00648g] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Nanoparticle-polymer composites hold promise in enabling material functionalities that are difficult to achieve otherwise, yet are hampered to date by the scarce control and tunability of the nanoparticle collective properties on the polymer surface, especially for polymer foams featuring a complex three-dimensional pore network. Here we report on the controlled and conformal in situ coating of polydimethylsiloxane (PDMS) foams with silver nanoparticles (AgNPs) with surface coverage finely tunable over a large range, from 0 to 75%, via the one-step room temperature reduction of AgF directly on the PDMS surface. This enables the design of AgNP electrical networks on the PDMS foam surface with piezo-resistive properties tunable up to a factor of 1000. We leveraged the control of the piezoresistive properties of the AgNP electrical network formed on PDMS foams to fabricate flexible and wearable pressure sensors with sensitivity of 0.41 kPa-1, an operation range >120 kPa, and a detection limit of 25 Pa. As a proof-of-concept application in wearable biomedical electronics, we successfully used the sensors to monitor the real-time radial artery pulse wave on the human wrist of a young male with high resolution.
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Affiliation(s)
- Alessandro Paghi
- Dipartimento di Ingegneria dell'Informazione, Università di Pisa, via G. Caruso 16, 56122 Pisa, Italy.
| | - Martina Corsi
- Dipartimento di Ingegneria dell'Informazione, Università di Pisa, via G. Caruso 16, 56122 Pisa, Italy.
| | - Samuele Corso
- Dipartimento di Ingegneria dell'Informazione, Università di Pisa, via G. Caruso 16, 56122 Pisa, Italy.
| | - Stefano Mariani
- Dipartimento di Ingegneria dell'Informazione, Università di Pisa, via G. Caruso 16, 56122 Pisa, Italy.
| | - Giuseppe Barillaro
- Dipartimento di Ingegneria dell'Informazione, Università di Pisa, via G. Caruso 16, 56122 Pisa, Italy.
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10
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Antibiotic Resistance in the Drinking Water: Old and New Strategies to Remove Antibiotics, Resistant Bacteria, and Resistance Genes. Pharmaceuticals (Basel) 2022; 15:ph15040393. [PMID: 35455389 PMCID: PMC9029892 DOI: 10.3390/ph15040393] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 03/18/2022] [Accepted: 03/21/2022] [Indexed: 12/11/2022] Open
Abstract
Bacterial resistance is a naturally occurring process. However, bacterial antibiotic resistance has emerged as a major public health problem in recent years. The accumulation of antibiotics in the environment, including in wastewaters and drinking water, has contributed to the development of antibiotic resistant bacteria and the dissemination of antibiotic resistance genes (ARGs). Such can be justified by the growing consumption of antibiotics and their inadequate elimination. The conventional water treatments are ineffective in promoting the complete elimination of antibiotics and bacteria, mainly in removing ARGs. Therefore, ARGs can be horizontally transferred to other microorganisms within the aquatic environment, thus promoting the dissemination of antibiotic resistance. In this review, we discuss the efficiency of conventional water treatment processes in removing agents that can spread/stimulate the development of antibiotic resistance and the promising strategies for water remediation, mainly those based on nanotechnology and microalgae. Despite the potential of some of these approaches, the elimination of ARGs remains a challenge that requires further research. Moreover, the development of new processes must avoid the release of new contaminants for the environment, such as the chemicals resulting from nanomaterials synthesis, and consider the utilization of green and eco-friendly alternatives such as biogenic nanomaterials and microalgae-based technologies.
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11
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Melamine sponge-based copper-organic framework (Cu-CPP) as a multi-functional filter for air purifiers. KOREAN J CHEM ENG 2022; 39:954-962. [PMID: 35153359 PMCID: PMC8815390 DOI: 10.1007/s11814-021-1000-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 10/25/2021] [Accepted: 10/31/2021] [Indexed: 10/25/2022]
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Liao SY, Li G, Wang XY, Wan YJ, Zhu PL, Hu YG, Zhao T, Sun R, Wong CP. Metallized Skeleton of Polymer Foam Based on Metal-Organic Decomposition for High-Performance EMI Shielding. ACS APPLIED MATERIALS & INTERFACES 2022; 14:3302-3314. [PMID: 34991311 DOI: 10.1021/acsami.1c21836] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Highly conductive polymer foam with light weight, flexibility, and high-performance electromagnetic interference (EMI) shielding is highly desired in the fields of aerospace, communication, and high-power electronic equipment, especially in the board-level packaging. However, traditional technology for preparing conductive polymer foam such as electroless plating and electroplating involves serious pollution, a complex fabrication process, and high cost. It is urgent to develop a facile method for the fabrication of highly conductive polymer foam. Herein, we demonstrated a lightweight and flexible silver-wrapped melamine foam (Ag@ME) via in situ sintering of metal-organic decomposition (MOD) at a low temperature (200 °C) on the ME skeleton modified with poly(ethylene imine). The Ag@ME with a continuous 3D conductive network exhibits good compressibility, an excellent conductivity of 158.4 S/m, and a remarkable EMI shielding effectiveness of 63 dB in the broad frequency of 8.2-40 GHz covering X-, Ku-, K-, and Ka-bands, while the volume content is only 2.03 vol %. The attenuation mechanism of Ag@ME for EM waves is systematically investigated by both EM simulation and experimental analysis. Moreover, the practical EMI shielding application of Ag@ME in board-level packaging is demonstrated and it shows outstanding near-field shielding performance. This novel strategy for fabrication of highly conductive polymer foam with low cost and non-pollution could potentially promote the practical applications of Ag@ME in the field of EMI shielding.
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Affiliation(s)
- Si-Yuan Liao
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Gang Li
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Xiao-Yun Wang
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yan-Jun Wan
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Peng-Li Zhu
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - You-Gen Hu
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Tao Zhao
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Rong Sun
- Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Ching-Ping Wong
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta 30332, United States
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Chen T, Zhou S, Hu Z, Fu X, Liu Z, Su B, Wan H, Du X, Gao Z. A multifunctional superhydrophobic melamine sponge decorated with Fe3O4/Ag nanocomposites for high efficient oil-water separation and antibacterial application. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127041] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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14
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Pandey A, Yang TS, Yang TI, Belem WF, Teng NC, Chen IW, Huang CS, Kareiva A, Yang JC. An Insight into Nano Silver Fluoride-Coated Silk Fibroin Bioinspired Membrane Properties for Guided Tissue Regeneration. Polymers (Basel) 2021; 13:polym13162659. [PMID: 34451200 PMCID: PMC8401509 DOI: 10.3390/polym13162659] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 08/03/2021] [Accepted: 08/06/2021] [Indexed: 01/06/2023] Open
Abstract
The current work focuses on the development of a novel electrospun silk fibroin (SF) nonwoven mat as a GTR membrane with antibacterial, biomineralization and biocompatible properties. The γ-poly glutamic acid (γ-PGA)-capped nano silver fluoride (NSF) and silver diamine fluoride (SDF) were first synthesized, which were dip-coated onto electrospun silk fibroin mats (NSF-SF and SDF-SF). UV-Vis spectroscopy and TEM depicted the formation of silver nanoparticles. NSF-SF and SDF-SF demonstrated antibacterial properties (against Porphyromonas gingivalis) with 3.1 and 6.7 folds higher relative to SF, respectively. Post-mineralization in simulated body fluid, the NSF-SF effectively promoted apatite precipitation (Ca/P ~1.67), while the SDF-SF depicted deposition of silver nanoparticles, assessed by SEM-EDS. According to the FTIR-ATR deconvolution analysis, NSF-SF portrayed ~75% estimated hydroxyapatite crystallinity index (CI), whereas pure SF and SDF-SF demonstrated ~60%. The biocompatibility of NSF-SF was ~82% when compared to the control, while SDF-coated samples revealed in vitro cytotoxicity, further needing in vivo studies for a definite conclusion. Furthermore, the NSF-SF revealed the highest tensile strength of 0.32 N/mm and 1.76% elongation at break. Therefore, it is substantiated that the novel bioactive and antibacterial NSF-SF membranes can serve as a potential candidate, shedding light on further in-depth analysis for GTR applications.
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Affiliation(s)
- Aditi Pandey
- Graduate Institute of Nanomedicine and Medical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11052, Taiwan;
| | - Tzu-Sen Yang
- Graduate Institute of Biomedical Optomechatronics, Taipei Medical University, Taipei 11031, Taiwan;
| | - Ta-I Yang
- Department of Chemical Engineering, Chung-Yuan Christian University, Taoyuan 32023, Taiwan;
| | - Wendimi Fatimata Belem
- International Ph.D. Program in Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan;
| | - Nai-Chia Teng
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 11052, Taiwan; (N.-C.T.); (I.-W.C.); (C.-S.H.)
| | - I-Wen Chen
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 11052, Taiwan; (N.-C.T.); (I.-W.C.); (C.-S.H.)
| | - Ching-Shuan Huang
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 11052, Taiwan; (N.-C.T.); (I.-W.C.); (C.-S.H.)
| | - Aivaras Kareiva
- Institute of Chemistry, Vilnius University, Naugarduko 24, LT-03225 Vilnius, Lithuania;
| | - Jen-Chang Yang
- Graduate Institute of Nanomedicine and Medical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11052, Taiwan;
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 11052, Taiwan; (N.-C.T.); (I.-W.C.); (C.-S.H.)
- Research Center of Biomedical Device, Taipei Medical University, Taipei 11052, Taiwan
- Research Center of Digital Oral Science and Technology, Taipei Medical University, Taipei 11052, Taiwan
- Correspondence: ; Tel.: +886-2-2736-1661 (ext. 5124); Fax: +886-2-27362295
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Ji B, Zhao W, Xu X, Han Y, Jie M, Xu G, Bai Y. Development of a modified quick, easy, cheap, effective, rugged, and safe method based on melamine sponge for multi-residue analysis of veterinary drugs in milks by ultra-performance liquid chromatography tandem mass spectrometry. J Chromatogr A 2021; 1651:462333. [PMID: 34161835 DOI: 10.1016/j.chroma.2021.462333] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 06/01/2021] [Accepted: 06/06/2021] [Indexed: 10/21/2022]
Abstract
The purpose of this study was to develop a modified QuEChERS method based on melamine sponge for rapid determination of multi-class veterinary drugs in milks by UPLC-MS/MS. Through simple infiltration and extrusion, fast and convenient matrix purification could be achieved within several seconds, and there was no need of extra phase separation operations. Good linearity with correlation coefficient (R2) ≥0.999 was obtained for all drugs in the range of 2~500 µg·kg-1. The obtained matrix effects were within ±20% for all monitored drugs. The recoveries of all monitored drugs ranged from 60.7% to 116.0% at three spiked levels (50, 100, and 200 µg·kg-1), with relative standard deviations less than 7.4%. Comparatively low LODs and LOQs were obtained in the ranges of 0.1~3.8 µg·kg-1 and 0.2~6.3 µg·kg-1, respectively. Compared with conventional purification adsorbents, melamine sponge yielded an equal or higher purification performance with matrix removal rate as high as 52.5% and acceptable recoveries in range of 60%-120% for all monitored drugs. The satisfactory results have demonstrated the good potential of melamine sponge in matrix purification for rapid determination of multiclass residues in food safety.
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Affiliation(s)
- Baocheng Ji
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou, PR China; Henan Key Laboratory of Cold Chain Quality and Safety Control, Zhengzhou, PR China; Collsborative Innovation Center of Food Production and Safety, Henan Province, PR China
| | - Wenhao Zhao
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou, PR China; Henan Key Laboratory of Cold Chain Quality and Safety Control, Zhengzhou, PR China; Collsborative Innovation Center of Food Production and Safety, Henan Province, PR China
| | - Xu Xu
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou, PR China; Henan Key Laboratory of Cold Chain Quality and Safety Control, Zhengzhou, PR China; Collsborative Innovation Center of Food Production and Safety, Henan Province, PR China
| | - Yu Han
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou, PR China; Henan Key Laboratory of Cold Chain Quality and Safety Control, Zhengzhou, PR China; Collsborative Innovation Center of Food Production and Safety, Henan Province, PR China
| | - Mingsha Jie
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou, PR China; Henan Key Laboratory of Cold Chain Quality and Safety Control, Zhengzhou, PR China; Collsborative Innovation Center of Food Production and Safety, Henan Province, PR China
| | - Gaigai Xu
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou, PR China
| | - Yanhong Bai
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou, PR China; Henan Key Laboratory of Cold Chain Quality and Safety Control, Zhengzhou, PR China; Collsborative Innovation Center of Food Production and Safety, Henan Province, PR China.
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Han X, He J, Wang Z, Bai Z, Qu P, Song Z, Wang W. Fabrication of silver nanoparticles/gelatin hydrogel system for bone regeneration and fracture treatment. Drug Deliv 2021; 28:319-324. [PMID: 33517806 PMCID: PMC8725951 DOI: 10.1080/10717544.2020.1869865] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
The present work aims to examine the effect of gelatin on the stabilization of silver nanoparticles (AgNPs) and their use in healing the bone fracture. AgNPs-loaded Gel hydrogels (AgNPs/Gel) were fabricated under sunlight using gelatin (Gel) as stabilizing agent. The characterization of the synthesized hydrogels was performed with the help of techniques such as UV-visible spectroscopy (UV-Vis) and high-resolution transmission electron microscopy (HR-TEM). Furthermore, the results of cell cytotoxicity confirmed that the AgNPs/Gel hydrogels are nonhazardous to osteoblasts. The outcome of cell fixation with AgNPs/Gel hydrogels after an incubation period of five days exposed the improved survival and spreading of osteoblasts cells on the prepared AgNPs/Gel hydrogels. Moreover, the AgNPs/Gel hydrogel nanostructures displayed their ability in modulating bone fracture healing, which suggests their potential use in nursing care.
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Affiliation(s)
- Xingwen Han
- Department of Orthopaedics, The First Hospital of Lanzhou University, Lanzhou, China
| | - Jingjing He
- Department of Liver Disease, Lanzhou University Second Hospital, Lanzhou, China
| | - Zhan Wang
- Department of Orthopaedics, Gansu Provincial Hospital, Lanzhou, China
| | - Zhongtian Bai
- Key Laboratory of Biotherapy and Regenerative Medicine of Gansu Province Lanzhou, The First Hospital of Lanzhou University, Lanzhou, China
| | - Peng Qu
- Department of Orthopaedics, The First Hospital of Lanzhou University, Lanzhou, China
| | - Zhengdong Song
- Department of Orthopaedics, The First Hospital of Lanzhou University, Lanzhou, China
| | - Wenji Wang
- Department of Orthopaedics, The First Hospital of Lanzhou University, Lanzhou, China
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17
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Multifunctional PDMS polyHIPE filters for oil-water separation and antibacterial activity. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117748] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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18
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Abstract
The major objectives of this study were to investigate the effects of silver nanoparticles– gelatin (AgNPs) on the physical and chemical properties of gelatin/alginate (Gel/Alg) scaffolds and the bone-promoting effect of AgNP–Gel/Alg scaffolds. Gel/Alg scaffolds consisting of 0 μM, 200 μM, 400 μM, and 600 μM AgNPs were prepared. SEM was used to evaluate the physical properties of the scaffolds. A CCK-8 assay was performed to determine the cell proliferation activity, and Micro-CT and histological analysis were used to assess the osteogenic effect. The pore size, porosity, and the water absorption and degradation rates of AgNP–Gel/Alg scaffolds were found to be increased compared with those of Gel/Alg scaffolds (control group). CCK-8 showed that cell proliferation activity in the 200 μM group was significantly higher than that in the control group. Micro-CT analysis showed that there was more new bone around AgNP–Gel/Alg than the control group, and the amount of bone formation in the 200 μM group was significantly higher than that in the other groups. Masson staining showed that numerous collagen fibers had proliferated around the AgNP–Gel/Alg scaffold and tended to thicken over time. AgNP–Gel/Alg scaffolds promoted the repair of skull defects in New Zealand rabbits and exerted a marked osteogenic effect in vivo. The 200 μM AgNP–Gel/Alg scaffold was shown to be more suitable for bone tissue engineering materials.
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Barroso-Solares S, Cimavilla-Roman P, Rodriguez-Perez MA, Pinto J. Non-Invasive Approaches for the Evaluation of the Functionalization of Melamine Foams with In-Situ Synthesized Silver Nanoparticles. Polymers (Basel) 2020; 12:polym12050996. [PMID: 32344876 PMCID: PMC7285167 DOI: 10.3390/polym12050996] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 04/22/2020] [Accepted: 04/23/2020] [Indexed: 11/18/2022] Open
Abstract
The use of polymeric nanocomposites has arisen as a promising solution to take advantage of the properties of nanoparticles (NPs) in diverse applications (e.g., water treatment, catalysis), while overcoming the drawbacks of free-standing nanoparticles (e.g., aggregation or accidental release). In most of the cases, the amount and size of the NPs will affect the stability of the composite as well as their performance. Therefore, a detailed characterization of the NPs present on the nanocomposites, including their quantification, is of vital importance for the optimization of these systems. However, the determination of the NPs load is often carried out by destructive techniques such as TGA or ICP-OES, the development of non-invasive approaches to that aim being necessary. In this work, the amount of silver NPs synthesized directly on the surface of melamine (ME) foams is studied using two non-invasive approaches: colorimetry and X-ray radiography. The obtained results show that the amount of silver NPs can be successfully determined from the luminosity and global color changes of the surface of the foams, as well as from the X-ray attenuance.
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Affiliation(s)
- Suset Barroso-Solares
- Cellular Materials Laboratory (CellMat), Condensed Matter Physics Department, University of Valladolid, 47011 Valladolid, Spain
- BioecoUVA Research Institute, University of Valladolid, 47011 Valladolid, Spain
- Group UVASENS, Escuela de Ingenierías Industriales, University of Valladolid, Paseo del Cauce, 59, 47011 Valladolid, Spain
- Correspondence:
| | - Paula Cimavilla-Roman
- Cellular Materials Laboratory (CellMat), Condensed Matter Physics Department, University of Valladolid, 47011 Valladolid, Spain
| | - Miguel Angel Rodriguez-Perez
- Cellular Materials Laboratory (CellMat), Condensed Matter Physics Department, University of Valladolid, 47011 Valladolid, Spain
- BioecoUVA Research Institute, University of Valladolid, 47011 Valladolid, Spain
| | - Javier Pinto
- Cellular Materials Laboratory (CellMat), Condensed Matter Physics Department, University of Valladolid, 47011 Valladolid, Spain
- BioecoUVA Research Institute, University of Valladolid, 47011 Valladolid, Spain
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20
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Pinto J, Barroso-Solares S, Magrì D, Palazon F, Lauciello S, Athanassiou A, Fragouli D. Melamine Foams Decorated with In-Situ Synthesized Gold and Palladium Nanoparticles. Polymers (Basel) 2020; 12:polym12040934. [PMID: 32316645 PMCID: PMC7240623 DOI: 10.3390/polym12040934] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 04/14/2020] [Accepted: 04/15/2020] [Indexed: 01/10/2023] Open
Abstract
A versatile and straightforward route to produce polymer foams with functional surface through their decoration with gold and palladium nanoparticles is proposed. Melamine foams, used as polymeric porous substrates, are first covered with a uniform coating of polydimethylsiloxane, thin enough to assure the preservation of their original porous structure. The polydimethylsiloxane layer allows the facile in-situ formation of metallic Au and Pd nanoparticles with sizes of tens of nanometers directly on the surface of the struts of the foam by the direct immersion of the foams into gold or palladium precursor solutions. The effect of the gold and palladium precursor concentration, as well as the reaction time with the foams, to the amount and sizes of the nanoparticles synthesized on the foams, was studied and the ideal conditions for an optimized functionalization were defined. Gold and palladium contents of about 1 wt.% were achieved, while the nanoparticles were proven to be stably adhered to the foam, avoiding potential risks related to their accidental release.
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Affiliation(s)
- Javier Pinto
- Smart Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy; (S.B.-S.); (D.M.); (S.L.); (A.A.)
- Cellular Materials Laboratory (CellMat), Condensed Matter Physics Department, University of Valladolid, 47011 Valladolid, Spain
- Correspondence: (J.P.); (D.F.)
| | - Suset Barroso-Solares
- Smart Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy; (S.B.-S.); (D.M.); (S.L.); (A.A.)
- Cellular Materials Laboratory (CellMat), Condensed Matter Physics Department, University of Valladolid, 47011 Valladolid, Spain
| | - Davide Magrì
- Smart Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy; (S.B.-S.); (D.M.); (S.L.); (A.A.)
| | - Francisco Palazon
- Nanochemistry Department, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy;
- Instituto de Ciencia Molecular, Universidad de Valencia, C/Beltrán 2, 46980 Paterna, Spain
| | - Simone Lauciello
- Smart Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy; (S.B.-S.); (D.M.); (S.L.); (A.A.)
| | - Athanassia Athanassiou
- Smart Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy; (S.B.-S.); (D.M.); (S.L.); (A.A.)
| | - Despina Fragouli
- Smart Materials, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy; (S.B.-S.); (D.M.); (S.L.); (A.A.)
- Correspondence: (J.P.); (D.F.)
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21
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He X, Ji Y, Xie J, Hu W, Jia K, Liu X. Emulsion solvent evaporation induced self-assembly of polyarylene ether nitrile block copolymers into functional metal coordination polymeric microspheres. POLYMER 2020. [DOI: 10.1016/j.polymer.2019.122024] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Hu D, Yu S, Yu D, Liu N, Tang Y, Fan Y, Wang C, Wu A. Biogenic Trichoderma harzianum-derived selenium nanoparticles with control functionalities originating from diverse recognition metabolites against phytopathogens and mycotoxins. Food Control 2019. [DOI: 10.1016/j.foodcont.2019.106748] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Mass-Sensitive Sensing of Melamine in Dairy Products with Molecularly Imprinted Polymers: Matrix Challenges. SENSORS 2019; 19:s19102366. [PMID: 31126005 PMCID: PMC6566888 DOI: 10.3390/s19102366] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 05/06/2019] [Accepted: 05/21/2019] [Indexed: 12/20/2022]
Abstract
Food standards and quality control are important means to ensure public health. In the last decade, melamine has become a rather notorious example of food adulteration: Spiking products with low-cost melamine in order to feign high amino acid content exploits the lack in specificity of the established Kjeldahl method for determining organic nitrogen. This work discusses the responses of a sensor based on quartz crystal microbalances (QCM) coated with molecularly imprinted polymers (MIP) to detect melamine in real life matrices both in a selective and a sensitive manner. Experiments in pure milk revealed no significant sensor responses. However, sensor response increased to a frequency change of −30Hz after diluting the matrix ten times. Systematic evaluation of this effect by experiments in melamine solutions containing bovine serum albumin (BSA) and casein revealed that proteins noticeably influence sensor results. The signal of melamine in water (1600 mg/L) decreases to half of its initial value, if either 1% BSA or casein are present. Higher protein concentrations decrease sensor responses even further. This suggests significant interaction between the analyte and proteins in general. Follow-up experiments revealed that centrifugation of tagged serum samples results in a significant loss of sensor response, thereby further confirming the suspected interaction between protein and melamine.
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Barroso-Solares S, Pinto J, Fragouli D, Athanassiou A. Facile Oil Removal from Water-in-Oil Stable Emulsions Using PU Foams. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E2382. [PMID: 30486345 PMCID: PMC6316968 DOI: 10.3390/ma11122382] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 11/23/2018] [Accepted: 11/26/2018] [Indexed: 11/17/2022]
Abstract
Superhydrophobic and oleophilic polyurethane foams were obtained by spray-coating their surfaces with solutions of thermoplastic polyurethane and hydrophobic silicon oxide nanoparticles. The developed functionalized foams were exploited as reusable oil absorbents from stable water-in-oil emulsions. These foams were able to remove oil efficiently from a wide range of emulsions with oil contents from 10 to 80 v.%, stabilized using Span80. The modified foams could reach oil absorption capacities up to 29 g/g, becoming a suitable candidate for water-in-oil stable emulsions separation.
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Affiliation(s)
- Suset Barroso-Solares
- Smart Materials, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy.
- Cellular Materials (CellMat) Research Group, Condensed Matter Physics Department, University of Valladolid, Paseo de Belen 7, 47011 Valladolid, Spain.
| | - Javier Pinto
- Smart Materials, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy.
- Cellular Materials (CellMat) Research Group, Condensed Matter Physics Department, University of Valladolid, Paseo de Belen 7, 47011 Valladolid, Spain.
| | - Despina Fragouli
- Smart Materials, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy.
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Pallavicini P, Dacarro G, Taglietti A. Self-Assembled Monolayers of Silver Nanoparticles: From Intrinsic to Switchable Inorganic Antibacterial Surfaces. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800709] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
| | - Giacomo Dacarro
- Department of Chemistry; University of Pavia; viale Taramelli, 12 - 27100 Pavia Italy
| | - Angelo Taglietti
- Department of Chemistry; University of Pavia; viale Taramelli, 12 - 27100 Pavia Italy
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