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Piatti E, Miola M, Verné E. Tailoring of bioactive glass and glass-ceramics properties for in vitro and in vivo response optimization: a review. Biomater Sci 2024; 12:4546-4589. [PMID: 39105508 DOI: 10.1039/d3bm01574b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/07/2024]
Abstract
Bioactive glasses are inorganic biocompatible materials that can find applications in many biomedical fields. The main application is bone and dental tissue engineering. However, some applications in contact with soft tissues are emerging. It is well known that both bulk (such as composition) and surface properties (such as morphology and wettability) of an implanted material influence the response of cells in contact with the implant. This review aims to elucidate and compare the main strategies that are employed to modulate cell behavior in contact with bioactive glasses. The first part of this review is focused on the doping of bioactive glasses with ions and drugs, which can be incorporated into the bioceramic to impart several therapeutic properties, such as osteogenic, proangiogenic, or/and antibacterial ones. The second part of this review is devoted to the chemical functionalization of bioactive glasses using drugs, extra-cellular matrix proteins, vitamins, and polyphenols. In the third and final part, the physical modifications of the surfaces of bioactive glasses are reviewed. Both top-down (removing materials from the surface, for example using laser treatment and etching strategies) and bottom-up (depositing materials on the surface, for example through the deposition of coatings) strategies are discussed.
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Affiliation(s)
- Elisa Piatti
- Applied Science and Technology Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy.
| | - Marta Miola
- Applied Science and Technology Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy.
| | - Enrica Verné
- Applied Science and Technology Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy.
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Xu H, Xu Y, Zheng X, Zhang S, Guo Y. Removal of Hg(II) with MgAl-layered double hydroxide functionalized by Schiff base ligands: Application and condition optimization. CHEMOSPHERE 2024:142972. [PMID: 39084303 DOI: 10.1016/j.chemosphere.2024.142972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 07/16/2024] [Accepted: 07/27/2024] [Indexed: 08/02/2024]
Abstract
To effectively remove heavy metal Hg(II) from water bodies, a novel adsorbent of MgAl-layered double hydroxide (LDH) was designed and functionalized with Schiff base. The characterization results of the adsorbent (MgAl-LDH@SiO2-AG) show that the Schiff base polymer was successfully coated onto the outside surface of MgAl-LDH with hexagonal structure. The theoretical maximum adsorption capacity to Hg(II) is 228.46 mg/g at pH 7 and 298 K. The different pH solutions were investigated from pH 2 to 8, and the optimal capacity of MgAl-LDH@SiO2-AG toward Hg(II) achieves 268.7 mg/g at pH = 7.2, T = 36.8 °C, C0 = 32.1 mg/L and dosage = 0.083 g/L. In reality, the adsorbent not only exhibits efficient removal of Hg(II) in various water bodies, including lake water, river water, effluent from sewage treatment plant, but also has an excellent selectivity in electroplating wastewater containing different heavy metal ions. Low contents of TN and TP in real wastewater have less effect on the removal of Hg(II). Moreover, the prepared adsorbent had a good reusability and stability. The reaction mechanism mainly involves chelation with nitrogen/oxygen-containing groups and the predominant participation of nitrogen atoms in the Schiff base functional group. The removal of Hg(II) relies on the pseudo-second-order kinetics and Langmuir model, and is an endothermic and spontaneous chemical reaction. The present work offers a practical method for preparing highly effective adsorptive materials with the LDH composites and for the treatment of heavy metal Hg(II) from water bodies.
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Affiliation(s)
- Hujuan Xu
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Yulong Xu
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Xinyu Zheng
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Shuyuan Zhang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Yongfu Guo
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou 215009, Jiangsu, China.
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Hemwech P, Obma A, Detsangiamsak S, Wirasate S, Wilairat P, Chantiwas R. Capillary surface modification using millimolar levels of aminosilane reagent for highly efficient separation of phenolic acids and flavonols by capillary electrophoresis with UV detection. PHYTOCHEMICAL ANALYSIS : PCA 2023; 34:621-631. [PMID: 37309090 DOI: 10.1002/pca.3250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 05/17/2023] [Accepted: 05/18/2023] [Indexed: 06/14/2023]
Abstract
INTRODUCTION Phytochemical analysis of phenolic acids and flavonols poses a challenge, necessitating the development of an efficient separation method. This facilitates the quantification of these compounds, yielding valuable insights into their benefits. OBJECTIVE To develop a highly effective separation of phenolic acids and flavonols by capillary electrophoresis and ultraviolet (UV) detection through the modification of the capillary surface using 3-aminopropyltriethoxysilane (APTES) at millimolar concentrations. METHODS The capillary surface is modified with 0.36 mM-APTES solution. The electrolyte is 20.0 mM borate buffer (pH 9.0). Separation performance (plate number N, resolution Rs ), stability, and reproducibility of the coating procedure are evaluated using the analysis of phenolic acids, rutin and quercetin. RESULTS The modified capillary provided efficient separation with plate numbers N ≥ 1.0 × 104 m-1 and resolution Rs ≥ 0.8 for all pairs of adjacent peaks of the separation of five selected phenolic acids, rutin, quercetin, caffeine and methylparaben (as internal standard). The precisions of the relative migration times for 17 consecutive analyses of samples over 3 h were 1% relative standard deviation (RSD) for rutin and 7% RSD for quercetin. The analysis of rutin and quercetin in 12 dietary supplement product samples only required a simple dilution step for sample preparation. CONCLUSION A straightforward modification technique utilising millimolar concentrations of APTES resulted in highly efficient separation of phenolic acids, rutin and quercetin, accompanied by high precision and surface stability. The modified capillary proved successful in analysing rutin and quercetin content in dietary supplements.
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Affiliation(s)
- Pattamaporn Hemwech
- Department of Chemistry and Centre of Excellence for Innovation in Chemistry and Flow Innovation-Research for Science and Technology Laboratories (FIRST Labs), Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Apinya Obma
- Department of Chemistry and Centre of Excellence for Innovation in Chemistry and Flow Innovation-Research for Science and Technology Laboratories (FIRST Labs), Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Sasinun Detsangiamsak
- Department of Chemistry and Centre of Excellence for Innovation in Chemistry and Flow Innovation-Research for Science and Technology Laboratories (FIRST Labs), Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Supa Wirasate
- Department of Chemistry, Faculty of Science, Mahidol University, Bangkok, Thailand
- Centre for Surface Science and Engineering, Faculty of Science, Mahidol University, Nakhorn Pathom, Thailand
- Rubber Technology Research Centre, Faculty of Science, Mahidol University, Nakhorn Pathom, Thailand
| | - Prapin Wilairat
- Analytical Sciences and National Doping Test Institute, Mahidol University, Bangkok, Thailand
| | - Rattikan Chantiwas
- Department of Chemistry and Centre of Excellence for Innovation in Chemistry and Flow Innovation-Research for Science and Technology Laboratories (FIRST Labs), Faculty of Science, Mahidol University, Bangkok, Thailand
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Yoon B, Choo H, Lee C. Synthesis and Evaluation of Engineering Properties of Polymer-Coated Glass Beads. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4476. [PMID: 37374659 DOI: 10.3390/ma16124476] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 06/09/2023] [Accepted: 06/17/2023] [Indexed: 06/29/2023]
Abstract
Modern construction projects are often challenging, which has increased the demand for innovative materials that ensure improved safety, durability, and functionality. To explore the potential of enhancing soil material functionality, this study synthesized polyurethane on the surface of glass beads and evaluated their mechanical properties. The synthesis of polymer proceeded according to a predetermined procedure, where the polymerization was confirmed through analysis of chemical structure by Fourier transform infrared spectroscopy (FT-IR) and microstructure observation by a scanning electron microscope (SEM) after complete synthesis. The constrained modulus (M) and the maximum shear modulus (Gmax) of mixtures with synthesized materials were examined by using an oedometer cell equipped with bender elements under a zero lateral strain condition. Both M and Gmax decreased with an increase in the contents of polymerized particles due to a decrease in the number of interparticle contacts and contact stiffness induced by the surface modification. The adhesion property of the polymer induced a stress-dependent change in M but was observed to have little effect on Gmax. Compared to the behavior of the rubber-sand mixtures, polymerized particles show the advantage of a smaller reduction of M.
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Affiliation(s)
- Boyoung Yoon
- School of Architectural, Civil and Environmental Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Hyunwook Choo
- Department of Civil and Environmental Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Changho Lee
- Department of Civil Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
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Synthesis of hyperbranched polyamine dendrimer/chitosan/silica composite for efficient adsorption of Hg(II). Int J Biol Macromol 2023; 230:123135. [PMID: 36610565 DOI: 10.1016/j.ijbiomac.2023.123135] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 12/16/2022] [Accepted: 01/01/2023] [Indexed: 01/06/2023]
Abstract
The pollution of water system with Hg(II) exerts hazardous effect to ecosystem and public health. Adsorption is considered to be a promising strategy to remove Hg(II) from aqueous solution. Herein, hyperbranched polyamine dendrimer/chitosan/silica composite (SiO2-FP) was synthesized for the adsorption of aqueous Hg(II). The adsorption performance of SiO2-FP was comprehensively determined by considering various influencing factors. SiO2-FP displays good adsorption performance for Hg(II) with the adsorption capacity of 0.79 mmol·g-1, which is higher than the corresponding chitosan functionalized silica (SiO2-CTS) by 46.30 %. The optimal solution pH for the adsorption of Hg(II) is 6. Adsorption kinetic indicates the adsorption for Hg(II) can reach equilibrium at 250 min. Adsorption kinetic process can be well fitted by pseudo-second-order (PSO). Adsorption isotherm reveals the adsorption for Hg(II) can be promoted by increasing initial Hg(II) concentration and adsorption temperature. The adsorption isotherm indicates the adsorption process can be described by Langmuir model and the adsorption is a spontaneous, endothermic and entropy-increased process. SiO2-FP displays excellent adsorption selectivity and can 100 % adsorb Hg(II) with the coexisting of Ni(II), Zn(II), Pb(II), Mn(II), and Co(II). Adsorption mechanism demonstrates -NH-, -NH2, CN, CONH, -OH, and CO participated in the adsorption. SiO2-FP exhibits good regeneration property and the regeneration rate can maintain approximately 90 % after five adsorption-desorption cycles.
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Heyn TR, Schrader M, Kampen I, Kwade A, Schwarz K, Keppler JK. Glass beads increase the formation kinetics of beta-lactoglobulin amyloid fibrils. Food Hydrocoll 2023. [DOI: 10.1016/j.foodhyd.2023.108511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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7
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Zhu Z, Wang J, Liu Y, Xian G, Wang Y, Wu C, Peng X, Fang Y, Kong LB. Effect of Hollow Glass Microspheres with Different Contents and Types on Properties of Polypropylene Composites. ChemistrySelect 2022. [DOI: 10.1002/slct.202202963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Zhaolin Zhu
- School of Materials Science and Engineering Anhui University of Science and Technology Huainan 232001 China
| | - Jinxiang Wang
- School of Materials Science and Engineering Anhui University of Science and Technology Huainan 232001 China
| | - Yin Liu
- School of Materials Science and Engineering Anhui University of Science and Technology Huainan 232001 China
- State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines Anhui University of Science and Technology Huainan 232001 Anhui China
| | - Guiyang Xian
- School of Materials Science and Engineering Anhui University of Science and Technology Huainan 232001 China
| | - Yan Wang
- School of Materials Science and Engineering Anhui University of Science and Technology Huainan 232001 China
| | - Chongmei Wu
- School of Materials Science and Engineering Anhui University of Science and Technology Huainan 232001 China
| | - Xiaobo Peng
- Anhui Triumph Base Material Technology Co., LTD Bengbu 232000 China
| | - Yongwei Fang
- Hefei Genius Advanced Material Co., LTD Hefei 230601 China
| | - Ling Bing Kong
- College of New Materials and New Energies Shenzhen Technology University Shenzhen 518118 Guangdong China
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8
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Laible AR, Dinius A, Schrader M, Krull R, Kwade A, Briesen H, Schmideder S. Effects and interactions of metal oxides in microparticle-enhanced cultivation of filamentous microorganisms. Eng Life Sci 2022; 22:725-743. [PMID: 36514528 PMCID: PMC9731605 DOI: 10.1002/elsc.202100075] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 08/13/2021] [Accepted: 09/17/2021] [Indexed: 12/16/2022] Open
Abstract
Filamentous microorganisms are used as molecular factories in industrial biotechnology. In 2007, a new approach to improve productivity in submerged cultivation was introduced: microparticle-enhanced cultivation (MPEC). Since then, numerous studies have investigated the influence of microparticles on the cultivation. Most studies considered MPEC a morphology engineering approach, in which altered morphology results in increased productivity. But sometimes similar morphological changes lead to decreased productivity, suggesting that this hypothesis is not a sufficient explanation for the effects of microparticles. Effects of surface chemistry on particles were paid little attention, as particles were often considered chemically-inert and bioinert. However, metal oxide particles strongly interact with their environment. This review links morphological, physical, and chemical properties of microparticles with effects on culture broth, filamentous morphology, and molecular biology. More precisely, surface chemistry effects of metal oxide particles lead to ion leaching, adsorption of enzymes, and generation of reactive oxygen species. Therefore, microparticles interfere with gene regulation, metabolism, and activity of enzymes. To enhance the understanding of microparticle-based morphology engineering, further interactions between particles and cells are elaborated. The presented description of phenomena occurring in MPEC eases the targeted choice of microparticles, and thus, contributes to improving the productivity of microbial cultivation technology.
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Affiliation(s)
- Andreas Reiner Laible
- School of Life SciencesChair of Process Systems EngineeringTechnische Universität MünchenFreisingGermany
| | - Anna Dinius
- Institute of Biochemical EngineeringTechnische Universität BraunschweigBraunschweigGermany
- Center of Pharmaceutical EngineeringTechnische Universität BraunschweigBraunschweigGermany
| | - Marcel Schrader
- Center of Pharmaceutical EngineeringTechnische Universität BraunschweigBraunschweigGermany
- Institute for Particle TechnologyTechnische Universität BraunschweigBraunschweigGermany
| | - Rainer Krull
- Institute of Biochemical EngineeringTechnische Universität BraunschweigBraunschweigGermany
- Center of Pharmaceutical EngineeringTechnische Universität BraunschweigBraunschweigGermany
| | - Arno Kwade
- Center of Pharmaceutical EngineeringTechnische Universität BraunschweigBraunschweigGermany
- Institute for Particle TechnologyTechnische Universität BraunschweigBraunschweigGermany
| | - Heiko Briesen
- School of Life SciencesChair of Process Systems EngineeringTechnische Universität MünchenFreisingGermany
| | - Stefan Schmideder
- School of Life SciencesChair of Process Systems EngineeringTechnische Universität MünchenFreisingGermany
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Kargozar S, Kermani F, Mollazadeh Beidokhti S, Hamzehlou S, Verné E, Ferraris S, Baino F. Functionalization and Surface Modifications of Bioactive Glasses (BGs): Tailoring of the Biological Response Working on the Outermost Surface Layer. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E3696. [PMID: 31717516 PMCID: PMC6888252 DOI: 10.3390/ma12223696] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 10/28/2019] [Accepted: 11/05/2019] [Indexed: 12/31/2022]
Abstract
Bioactive glasses (BGs) are routinely being used as potent materials for hard and soft tissue engineering applications; however, improving their biological activities through surface functionalization and modification has been underestimated so far. The surface characteristics of BGs are key factors in determining the success of any implanted BG-based material in vivo since they regulate the affinity and binding of different biological macromolecules and thereby the interactions between cells and the implant. Therefore, a number of strategies using chemical agents (e.g., glutaraldehyde, silanes) and physical methods (e.g., laser treatment) have been evaluated and applied to design properly, tailor, and improve the surface properties of BGs. All these approaches aim at enhancing the biological activities of BGs, including the induction of cell proliferation and subsequent osteogenesis, as well as the inhibition of bacterial growth and adhesion, thereby reducing infection. In this study, we present an overview of the currently used approaches of surface functionalization and modifications of BGs, along with discussing the biological outputs induced by these changes.
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Affiliation(s)
- Saeid Kargozar
- Tissue Engineering Research Group (TERG), Department of Anatomy and Cell Biology, School of Medicine, Mashhad University of Medical Sciences, Mashhad 917794-8564, Iran
| | - Farzad Kermani
- Department of Materials Engineering, Faculty of Engineering, Ferdowsi University of Mashhad (FUM), Azadi Sq., Mashhad 917794-8564, Iran; (F.K.); (S.M.B.)
| | - Sahar Mollazadeh Beidokhti
- Department of Materials Engineering, Faculty of Engineering, Ferdowsi University of Mashhad (FUM), Azadi Sq., Mashhad 917794-8564, Iran; (F.K.); (S.M.B.)
| | - Sepideh Hamzehlou
- Department of Medical Genetics, School of Medicine, Tehran University of Medical Sciences, Tehran 14155-6447, Iran
| | - Enrica Verné
- Institute of Materials Physics and Engineering, Applied Science and Technology Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy; (E.V.); (S.F.)
| | - Sara Ferraris
- Institute of Materials Physics and Engineering, Applied Science and Technology Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy; (E.V.); (S.F.)
| | - Francesco Baino
- Institute of Materials Physics and Engineering, Applied Science and Technology Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy; (E.V.); (S.F.)
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Chemical modification of expanded glass aggregate with N-Benzoyl-N′-(4-methylphenyl) thiourea (TTU) for the adsorptive removal of Cr(III) ion. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2015.11.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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11
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Yu SW, Choi HJ. Application of hybrid bead, persimmon leaf and chitosan for the treatment of aqueous solution contaminated with toxic heavy metal ions. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2018; 78:837-847. [PMID: 30252661 DOI: 10.2166/wst.2018.354] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this study, hybrid beads, which are made by mixing persimmon leaf and chitosan, was used to remove Pb(II) and Cd(II) from aqueous solution. According to the Fourier transform infrared spectrometry (FT-IR) analysis, the hybrid bead has a structure that enables the easy adsorption of heavy metals because it has carboxylic, carbonyl groups, O-H carboxylic acid, and bonded -OH groups. The adsorption of Pb(II) and Cd(II) by hybrid beads was more suitable with the Langmuir isothermal adsorption and showed an ion exchange reaction which occurred in the uneven adsorption surface layer. The maximum adsorption capacity of Pb(II) and Cd(II) was determined to be 278.68 mg/g and 87.91 mg/g, respectively. Furthermore, the adsorption removal process of Pb(II) and Cd(II) using hybrid beads is a spontaneous exothermic reaction and the affinity of the adsorbed material for the adsorbent is excellent. Hybrid beads are inexpensive, have a high removal efficiency of heavy metals, and are environmentally friendly.
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Affiliation(s)
- Sung-Whan Yu
- Department of Health and Environment, Catholic Kwandong University, Beomil-ro 579, Gangneung-si, Gandwon-do 25601, Republic of Korea E-mail:
| | - Hee-Jeong Choi
- Department of Health and Environment, Catholic Kwandong University, Beomil-ro 579, Gangneung-si, Gandwon-do 25601, Republic of Korea E-mail:
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12
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Ali Z, Ahmad R, Khan A. Tailored silica nanospheres: an efficient adsorbent for environmental chromium remediation. RADIOCHIM ACTA 2018. [DOI: 10.1515/ract-2017-2861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
This manuscript reports the synthesis and characterization of caprylpyrazolone tailored silica nanospheres, synthesized through sol–gel procedure by activating the silica nanospheres with organosilane precursor and grafting with caprylpyrazolone. Its successful attachment to the silica is confirmed by FTIR, TGA and elemental techniques. The feasibility of the synthesized nanospheres as adsorbent was systematically checked by elimination of trace level of Cr(III) from aqueous medium, using radiotracer technique. A number of factors such as effect of pH, agitation time, adsorbent and adsorbate dosage were optimized to guarantee the use of the adsorbent for practical use. Various counter ions were added to the matrix solution to check the selectivity of the synthesized sorbent. Various rate equations and adsorption isotherms such as Freundlich, D-R and Langmuir were employed to suggest the mechanistic pathway of the adsorption process. The Cr(III) extraction was monitored at room and elevated temperatures and thermodynamic parameters such as change in enthalpy, entropy, and Gibbs free energy of the metal ion uptake were computed. The removal of Cr(III) is endothermic (∆H=30.00 J mol−1 K−1) and spontaneous (∆S=105.43 J mol−1 K−1) in nature. Application of the adsorbent to real water samples demonstrated the practical utility of the adsorbent. The sorbent displayed good stability. Its cleaning efficiency is not significantly affected after various adsorption-desorption cycles and so it can be used repeatedly.
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Affiliation(s)
- Zarshad Ali
- Department of Chemistry , Hazara University , Mansehra , Pakistan
| | - Rashid Ahmad
- Department of Chemistry , University of Malakand , Chakdara, Dir (L) , Pakistan , Tel.: +92 333 5104105, Fax: +92 945 962 356
| | - Aslam Khan
- Chemistry Division, PINSTECH, PO Nilore , Islamabad , Pakistan
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13
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Chen Y, Zhao W, Zhang J. Preparation of 4-vinylpyridine (4VP) resin and its adsorption performance for heavy metal ions. RSC Adv 2017. [DOI: 10.1039/c6ra26813g] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The study focused on the preparation of a chelating resin with pyridine ring as the functional group.
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Affiliation(s)
- Youning Chen
- College of Chemistry and Chemical Engineering
- Xianyang Normal College
- Xianyang 712000
- China
| | - Wei Zhao
- College of Chemistry and Chemical Engineering
- Xianyang Normal College
- Xianyang 712000
- China
| | - Juncai Zhang
- College of Chemistry and Chemical Engineering
- Xianyang Normal College
- Xianyang 712000
- China
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14
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Huang C, Huang Z, Lv X, Zhang G, Wang Q, Wang B. Surface modification of hollow glass microsphere with different coupling agents for potential applications in phenolic syntactic foams. J Appl Polym Sci 2016. [DOI: 10.1002/app.44415] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Chi Huang
- Key Laboratory of Advanced Technology for Special Functional Materials of Ministry of Education School of Materials Science and Engineering; Wuhan University of Technology; Wuhan 430070 China
| | - Zhixiong Huang
- Key Laboratory of Advanced Technology for Special Functional Materials of Ministry of Education School of Materials Science and Engineering; Wuhan University of Technology; Wuhan 430070 China
| | - Xuesong Lv
- Key Laboratory of Advanced Technology for Special Functional Materials of Ministry of Education School of Materials Science and Engineering; Wuhan University of Technology; Wuhan 430070 China
| | - Guangwu Zhang
- Key Laboratory of Advanced Technology for Special Functional Materials of Ministry of Education School of Materials Science and Engineering; Wuhan University of Technology; Wuhan 430070 China
| | - Qiong Wang
- Biomedical Research Institute Wuhan University of Science and Technology; Wuhan 430065 China
| | - Bo Wang
- Key Laboratory of Advanced Technology for Special Functional Materials of Ministry of Education School of Materials Science and Engineering; Wuhan University of Technology; Wuhan 430070 China
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15
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Surface Modification Chemistries of Materials Used in Diagnostic Platforms with Biomolecules. J CHEM-NY 2016. [DOI: 10.1155/2016/9241378] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Biomolecules including DNA, protein, and enzymes are of prime importance in biomedical field. There are several reports on the technologies for the detection of these biomolecules on various diagnostic platforms. It is important to note that the performance of the biosensor is highly dependent on the substrate material used and its meticulous modification for particular applications. Therefore, it is critical to understand the principles of a biosensor to identify the correct substrate material and its surface modification chemistry. The imperative surface modification for the attachment of biomolecules without losing their bioactivity is a key to sensitive detection. Therefore, finding of a modification method which gives minimum damage to the surface as well as biomolecule is highly inevitable. Different surface modification technologies are invented according to the type of a substrate used. Surface modification techniques of the materials used as platforms in the fabrication of biosensors are reviewed in this paper.
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Gan W, Gao L, Zhan X, Li J. Preparation of thiol-functionalized magnetic sawdust composites as an adsorbent to remove heavy metal ions. RSC Adv 2016. [DOI: 10.1039/c6ra02285e] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
TF-MS could be used to remove heavy metal ions from an aqueous solution and be separated conveniently from the solution with the help of an external magnet.
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Affiliation(s)
- Wentao Gan
- Key Laboratory of Bio-based Material Science and Technology
- Ministry of Education
- Material Science and Engineering College
- Northeast Forestry University
- Harbin 150040
| | - Likun Gao
- Key Laboratory of Bio-based Material Science and Technology
- Ministry of Education
- Material Science and Engineering College
- Northeast Forestry University
- Harbin 150040
| | - Xianxu Zhan
- Dehua TB New Decoration Material Co., Ltd
- Huzhou
- P.R. China
| | - Jian Li
- Key Laboratory of Bio-based Material Science and Technology
- Ministry of Education
- Material Science and Engineering College
- Northeast Forestry University
- Harbin 150040
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Kazak O, Tor A, Akin I, Arslan G. Preparation and characterization of novel polysulfone-red mud composite capsules for the removal of fluoride from aqueous solutions. RSC Adv 2016. [DOI: 10.1039/c6ra12055e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This study is the first investigation on the encapsulation of red mud by a polysulfone matrix through a phase inversion process to obtain composite capsules for the removal of fluoride from aqueous solutions.
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Affiliation(s)
- Omer Kazak
- Department of Environmental Engineering
- Necmettin Erbakan University
- Konya
- Turkey
| | - Ali Tor
- Department of Environmental Engineering
- Necmettin Erbakan University
- Konya
- Turkey
| | - Ilker Akin
- Department of Chemistry
- Selcuk University
- Konya
- Turkey
| | - Gulsin Arslan
- Department of Biochemistry
- Selcuk University
- Konya
- Turkey
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Amplification of the signal intensity of fluorescence-based fiber-optic biosensors using a Fabry-Perot resonator structure. SENSORS 2015; 15:3565-74. [PMID: 25690548 PMCID: PMC4367373 DOI: 10.3390/s150203565] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Revised: 01/19/2015] [Accepted: 01/29/2015] [Indexed: 11/17/2022]
Abstract
Fluorescent biosensors have been widely used in biomedical applications. To amplify the intensity of fluorescence signals, this study developed a novel structure for an evanescent wave fiber-optic biosensor by using a Fabry-Perot resonator structure. An excitation light was coupled into the optical fiber through a laser-drilled hole on the proximal end of the resonator. After entering the resonator, the excitation light was reflected back and forth inside the resonator, thereby amplifying the intensity of the light in the fiber. Subsequently, the light was used to excite the fluorescent molecules in the reactive region of the sensor. The experimental results showed that the biosensor signal was amplified eight-fold when the resonator reflector was formed using a 92% reflective coating. Furthermore, in a simulation, the biosensor signal could be amplified 20-fold by using a 99% reflector.
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Akolo SA, Kovo AS. Comparative Study of Adsorption of Copper Ion onto Locally Developed and Commercial Chitosan. ACTA ACUST UNITED AC 2015. [DOI: 10.4236/jeas.2015.51003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Chung SH, Baek C, Cong VT, Min J. The microfluidic chip module for the detection of murine norovirus in oysters using charge switchable micro-bead beating. Biosens Bioelectron 2014; 67:625-33. [PMID: 25449875 DOI: 10.1016/j.bios.2014.09.083] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Revised: 08/28/2014] [Accepted: 09/22/2014] [Indexed: 01/01/2023]
Abstract
Sample preparation has recently been an issue in the detection of food poisoning pathogens, particularly viruses such as norovirus (NoV), in food because of the complexity of foods and raw fresh materials. Here, we demonstrate a total analytical microfluidic chip module to automatically perform a series of essential processes (cell concentration, lysis (RNA extraction), nucleic acid amplification, and detection) for the fast but sensitive detection of norovirus in oysters. The murine NoV spiked oyster was stomached using a standard method. The supernatant was first loaded into a shape switchable sample preparation chamber consisting of charge switchable micro-beads. Murine NoV, which was adsorbed on microbeads by electrostatic physisorption, was lysed using bead beating. The extracted RNA was transferred to the detection chamber to be amplified using Nucleic Acid Sequence Based Amplification (NASBA). The optimal surface functionality, size, and number of microbeads were achieved for the virus concentration and the stable RNA extraction in the shape-switchable micro-channel. As a result, murine NoV in a single oyster was successfully detected within 4h by the microfluidic chip developed here, and could be directly applied to the large volume environmental sample as well as the food sample.
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Affiliation(s)
- Sung Hee Chung
- School of Integrative Engineering, Chung-Ang University, Heuksuk-dong, Dongjak-gu, Seoul 156-756, Republic of Korea
| | - Changyoon Baek
- School of Integrative Engineering, Chung-Ang University, Heuksuk-dong, Dongjak-gu, Seoul 156-756, Republic of Korea
| | - Vu Tan Cong
- School of Integrative Engineering, Chung-Ang University, Heuksuk-dong, Dongjak-gu, Seoul 156-756, Republic of Korea
| | - Junhong Min
- School of Integrative Engineering, Chung-Ang University, Heuksuk-dong, Dongjak-gu, Seoul 156-756, Republic of Korea.
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Selective adsorption of Pb(II), Cd(II), and Ni(II) ions from aqueous solution using chitosan–MAA nanoparticles. Int J Biol Macromol 2013; 61:251-63. [DOI: 10.1016/j.ijbiomac.2013.06.032] [Citation(s) in RCA: 168] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Revised: 05/09/2013] [Accepted: 06/22/2013] [Indexed: 11/19/2022]
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22
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Gubbuk IH. Isotherms and thermodynamics for the sorption of heavy metal ions onto functionalized sporopollenin. JOURNAL OF HAZARDOUS MATERIALS 2011; 186:416-422. [PMID: 21144652 DOI: 10.1016/j.jhazmat.2010.11.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Revised: 09/28/2010] [Accepted: 11/04/2010] [Indexed: 05/30/2023]
Abstract
In this study, sporopollenin of Lycopodium clavatum spores was used for the sorption experiment. Glutaraldehyde (GA) immobilized sporopollenin (Sp), is employed as a sorbent in sorption of selected heavy metal ions. The sorbent prepared by sequential treatment of sporopollenin by silanazing compound and glutaraldehyde is suggested for sorption of Cu(II), Zn(II) and Co(II) from aqueous solutions. Experimental conditions for effective sorption of heavy metal ions were optimized with respect to different experimental parameters using batch method in detail. Optimum pH range of Cu(II) has occurred at pH≥5.5 and Zn(II), Co(II) at pH≥5.0, for the batch method. All of the metal ions can be desorbed with 10 cm(3) of 0.5 mol dm(-3) of ethylenediaminetetraacetic acid (EDTA) solution. Langmuir, Freundlich and Dubinin-Radushkevich (D-R) isotherm equations were applied to the experimental data. Thermodynamic parameters such as free energy (ΔG(o)), entropy (ΔS(o)) and enthalpy (ΔH(o)) were also calculated from the sorption results used to explain the mechanism of the sorption. The results indicated that this sorbent is successfully employed in the separation of trace Cu(II), Zn(II) and Co(II) from the aqueous solutions.
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Yilmaz E, Can K, Sezgin M, Yilmaz M. Immobilization of Candida rugosa lipase on glass beads for enantioselective hydrolysis of racemic naproxen methyl ester. BIORESOURCE TECHNOLOGY 2011; 102:499-506. [PMID: 20846857 DOI: 10.1016/j.biortech.2010.08.083] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2010] [Revised: 08/22/2010] [Accepted: 08/23/2010] [Indexed: 05/29/2023]
Abstract
Candida rugosa lipase (CRL) was immobilized on glutaraldehyde-activated aminopropyl glass beads by using covalent binding method or sol-gel encapsulation procedure and improved considerably by fluoride-catalyzed hydrolysis of mixtures of RSi(OCH3)3 and Si(OCH3)4. The catalytic properties of the immobilized lipases were evaluated into model reactions, i.e. the hydrolysis of p-nitrophenylpalmitate (p-NPP). It has been observed that the percent activity yield of the encapsulated lipase was 166.9, which is 5.5 times higher than that of the covalently immobilized lipase. The enantioselective hydrolysis of racemic Naproxen methyl ester by immobilized lipase was studied in aqueous buffer solution/isooctane reaction system and it was noticed that particularly, the glass beads based encapsulated lipases had higher conversion and enantioselectivity compared to covalently immobilized lipase. In short, the study confirms an excellent enantioselectivity (E>400) for the encapsulated lipase with an ee value of 98% for S-Naproxen.
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Affiliation(s)
- Elif Yilmaz
- Department of Chemistry, Faculty of Science, Selcuk University, Konya 42075, Turkey
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