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Zavala-Robles KG, Ramos-Ibarra JR, Franco Rodriguez NE, Zamudio-Ojeda A, Cavazos-Garduño A, Serrano-Niño JC. Assessment of chitosan-based adsorbents for glyphosate removal. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2024; 59:62-71. [PMID: 38099739 DOI: 10.1080/03601234.2023.2291980] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Exposure to glyphosate produces various toxic effects, due to this, different methods have been evaluated for its elimination. The objective of this work was to formulate chitosan-based adsorbents and evaluate their efficiency in the removal of glyphosate in vitro. Four films were made by varying the weight ratio of silica/chitosan particles, and four sponges were made by varying the chitosan/chitosan ratio in a reticulated manner. Both adsorbents were characterized based on their porosity, water absorption, glyphosate removal, and reusability. It was found that increasing the porosity in both films and sponges resulted in an increase in the adsorption efficiency of glyphosate. The adsorption process exhibited a better fit in both adsorbents to the pseudo-second-order model. The adsorption of glyphosate to the films fit better with the Langmuir model, demonstrating that the process occurs in the form of a monolayer. In the case of sponges, the adsorption of glyphosate fit better with the Freundlich model, indicating that the process takes place in a multilayer form. Finally, when the reusability was evaluated, the adsorbents showed a loss of effectiveness. However, they still proved to be an efficient alternative for the removal of glyphosate in water, providing a cost-effective and environmentally friendly solution.
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Affiliation(s)
- K G Zavala-Robles
- Maestría en Ciencias en Inocuidad Alimentaria, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Guadalajara, Jalisco, México
| | - J R Ramos-Ibarra
- Departamento de Farmacobiología, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Guadalajara, Jalisco, México
| | - N E Franco Rodriguez
- Departamento de Farmacobiología, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Guadalajara, Jalisco, México
| | - A Zamudio-Ojeda
- Departamento de Física, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Guadalajara, Jalisco, México
| | - A Cavazos-Garduño
- Maestría en Ciencias en Inocuidad Alimentaria, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Guadalajara, Jalisco, México
- Departamento de Farmacobiología, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Guadalajara, Jalisco, México
| | - J C Serrano-Niño
- Maestría en Ciencias en Inocuidad Alimentaria, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Guadalajara, Jalisco, México
- Departamento de Farmacobiología, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Guadalajara, Jalisco, México
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Grzybek P, Jakubski Ł, Dudek G. Neat Chitosan Porous Materials: A Review of Preparation, Structure Characterization and Application. Int J Mol Sci 2022; 23:ijms23179932. [PMID: 36077330 PMCID: PMC9456476 DOI: 10.3390/ijms23179932] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 08/29/2022] [Accepted: 08/30/2022] [Indexed: 11/17/2022] Open
Abstract
This review presents an overview of methods for preparing chitosan-derived porous materials and discusses their potential applications. This family of materials has garnered significant attention owing to their biocompatibility, nontoxicity, antibacterial properties, and biodegradability, which make them advantageous in a wide range of applications. Although individual porous chitosan-based materials have been widely discussed in the literature, a summary of all available methods for preparing materials based on pure chitosan, along with their structural characterization and potential applications, has not yet been presented. This review discusses five strategies for fabricating porous chitosan materials, i.e., cryogelation, freeze-drying, sol-gel, phase inversion, and extraction of a porogen agent. Each approach is described in detail with examples related to the preparation of chitosan materials. The influence of the fabrication method on the structure of the obtained material is also highlighted herein. Finally, we discuss the potential applications of the considered materials.
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Fakhry H, El-Sonbati M, Omar B, El-Henawy R, Zhang Y, El-Kady M. Novel fabricated low-cost hybrid polyacrylonitrile/polyvinylpyrrolidone coated polyurethane foam (PAN/PVP@PUF) membrane for the decolorization of cationic and anionic dyes. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 315:115128. [PMID: 35483254 DOI: 10.1016/j.jenvman.2022.115128] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 04/13/2022] [Accepted: 04/18/2022] [Indexed: 06/14/2023]
Abstract
Dyes are recalcitrait organic pollutants threatening the aquatic environment and human health. In the present study, a novel low-cost hybrid membrane was fabricated by coating polyurethane foam (PUF) with polyacrylonitrile/polyvinylpyrrolidone (PAN/PVP) via phase inversion technique from casting solutions consisting of PAN and PVP with Dimethyl formamide (DMF) and applied for removal of cationic (Methylene Blue (MB)) and anionic (Methyl Orange (MO)) dyes from aqueous solutions. The as-prepared membrane was first characterized by Scan Electron Microscope (SEM), Fourier Transform Infrared (FTIR), Energy Dispersive Spectrometry (EDS), etc. Then, batch experiments were conducted to optimize the adsorption conditions, including contact time, adsorbent dose, dyes concentration, and pH. The dye removal results fitted with pseudo first and second-order kinetics; Langmuir, Freundlich, and Temkin isotherms' models. The maximum dye decolorization was approximately 97% and 95% within 60 and 120 min using 0.5 and 1 g of the fabricated composite for MB and MO, respectively. The kinetic studies showed rapid sorption dynamics following a second-order kinetic model. In addition, dye adsorption equilibrium data fitted well to the Freundlich isotherm with monolayer maximum adsorption capacity of 6.356 and 3.321 mg/g for MO and MB dye, respectively. Thus, the novel hybrid membrane is promising as a cheap and efficient adsorbent for the removal of both cationic and anionic dyes from wastewater. The current study demonstrated a new avenue to achieve efficient management of dyes in aquatic environments.
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Affiliation(s)
- Hala Fakhry
- Polymer Materials Research Department, Advanced Technology and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, Alexandria, 21934, Egypt
| | - Mervat El-Sonbati
- Department of Environmental Sciences, Faculty of Science, Damietta University, 34517, Damietta, Egypt
| | - Basma Omar
- Department of Environmental Sciences, Faculty of Science, Damietta University, 34517, Damietta, Egypt
| | - Reham El-Henawy
- Department of Environmental Sciences, Faculty of Science, Damietta University, 34517, Damietta, Egypt
| | - Yifeng Zhang
- Department of Environmental Engineering, Technical University of Denmark, DK-2800, Kongens Lyngby, Denmark.
| | - Marwa El-Kady
- Fabrication Technology Research Department, Advanced Technology and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications, (SRTA-City), New Borg El-Arab City, Alexandria, 21934, Egypt; Chemical and Petrochemicals Engineering Department, Engineering Faculty, Egypt-Japan University of Science and Technology, New BorgEl-Arab City, Alexandria, 21934, Egypt
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4
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Liu CH, Jiang HT, Wang CH. Fabrication and characterization of a toughened spherical chitosan adsorbent only through physical crosslinking based on mechanism of Chain Rearrangement. RSC Adv 2022; 12:9179-9185. [PMID: 35424873 PMCID: PMC8985190 DOI: 10.1039/d1ra09438f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 02/22/2022] [Indexed: 01/15/2023] Open
Abstract
Chitosan extracted from natural products has gained tremendous attention in the field of adsorption and separation due to its inherent biocompatibility and potential applications. In this research, we synthesized a new type of spherical chitosan adsorbent (SCA) by controlling the mass transfer rate of the entanglement of the polymer chains in the recombination process. This SCA is a highly crystalline polymer material with outstanding mechanical strength, high adsorption capacity, a porous surface and suitable particle size distribution. The value of the sphericity of attrition of this SCA was 89.8%, which is the same as that of the commercial macroporous resin with a polystyrene matrix. The X-ray diffraction (XRD) patterns and differential scanning calorimetry (DSC) curves showed a significant change from powder to spherical structure and confirmed that the SCA is highly ordered and crystalline. Optical microscopy (OM) and scanning electron microscopy (SEM) demonstrated that the SCA was composed of a tightly stacked fiber structure, indicating the homogeneity of the polymerization. The porous structure of the surface provided a channel for mass transfer, which was indicated by a test of the ion exchange capacity and the adsorption performance of the SCA with Cu(ii) as the adsorbed subject. The adsorption capacity was higher than those of all reported non-composite chitosan materials. Therefore, we have successfully synthesized a completely green, nontoxic and environmentally friendly adsorbing resin equipped with excellent mechanical properties and adsorption capacity for future applications in many new fields.
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Affiliation(s)
- Cai-Hong Liu
- Key Laboratory of Functional Polymer Materials (Ministry of Education), College of Chemistry, Nankai University Tianjin 300071 P. R. China
| | - Hai-Tao Jiang
- Key Laboratory of Functional Polymer Materials (Ministry of Education), College of Chemistry, Nankai University Tianjin 300071 P. R. China
| | - Chun-Hong Wang
- Key Laboratory of Functional Polymer Materials (Ministry of Education), College of Chemistry, Nankai University Tianjin 300071 P. R. China
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Wang Y, Chen G, Yang F, Luo Z, Yuan B, Chen X, Wang L. Serendipity discovery of fire early warning function of chitosan film. Carbohydr Polym 2022; 277:118884. [PMID: 34893287 DOI: 10.1016/j.carbpol.2021.118884] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 10/04/2021] [Accepted: 11/09/2021] [Indexed: 12/21/2022]
Abstract
Transparent chitosan (CS) film is prepared and its application in high temperature/fire warning is discussed. NaCl-doped chitosan (CS-NaCl) film shows excellent performance in real-time temperature monitoring and fire warning. The temperature warning of CS-NaCl film can be triggered under approximately 50 °C, and it has a good repeatable warning performance under high-temperature conditions. The CS composite film exhibits an ultra-sensitive (0.4 s) warning under fire attacking. A possible electrical conduction and fire-alarm mechanisms are proposed. The addition of NaCl increases the number of charge carriers, which improves the ionic conductivity of the composite film. This study provides a possibility for the application of CS in the field of fire warning.
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Affiliation(s)
- Yong Wang
- School of Safety Science and Emergency Management, Wuhan University of Technology, Wuhan 430070, China
| | - Gongqing Chen
- School of Safety Science and Emergency Management, Wuhan University of Technology, Wuhan 430070, China
| | - Fangzhou Yang
- School of Safety Science and Emergency Management, Wuhan University of Technology, Wuhan 430070, China
| | - Zihao Luo
- School of Safety Science and Emergency Management, Wuhan University of Technology, Wuhan 430070, China
| | - Bihe Yuan
- School of Safety Science and Emergency Management, Wuhan University of Technology, Wuhan 430070, China.
| | - Xianfeng Chen
- School of Safety Science and Emergency Management, Wuhan University of Technology, Wuhan 430070, China
| | - Liancong Wang
- State Key Laboratory of Coal Mine Safety Technology, CCTEG Shenyang Research Institute, Fushun 113122, China
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Mhatre A, Bhagwat A, Bangde P, Jain R, Dandekar P. Chitosan/gelatin/PVA membranes for mammalian cell culture. CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS 2021. [DOI: 10.1016/j.carpta.2021.100163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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7
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Ruiz-Aguilar C, Olivares-Pinto U, Drew R, Aguilar-Reyes E, Alfonso I. Porogen Effect on Structural and Physical Properties of β-TCP Scaffolds for Bone Tissue Regeneration. Ing Rech Biomed 2021. [DOI: 10.1016/j.irbm.2020.05.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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8
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Guerle-Cavero R, Lleal-Fontàs B, Balfagón-Costa A. Creation of Ionically Crosslinked Tri-Layered Chitosan Membranes to Simulate Different Human Skin Properties. MATERIALS (BASEL, SWITZERLAND) 2021; 14:1807. [PMID: 33917479 PMCID: PMC8038782 DOI: 10.3390/ma14071807] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 03/23/2021] [Accepted: 04/02/2021] [Indexed: 02/02/2023]
Abstract
In 2023, new legislation will ban the use of animals in the cosmetic industry worldwide. This fact, together with ethical considerations concerning the use of animals or humans in scientific research, highlights the need to propose new alternatives for replacing their use. The aim of this study is to create a tri-layered chitosan membrane ionically crosslinked with sodium tripolyphosphate (TPP) in order to simulate the number of layers in human skin. The current article highlights the creation of a membrane where pores were induced by a novel method. Swelling index, pore creation, and mechanical property measurements revealed that the swelling index of chitosan membranes decreased and, their pore formation and elasticity increased with an increase in the Deacetylation Grade (DDA). Additionally, the results demonstrate that chitosan's origin can influence the elastic modulus value and reproducibility, with higher values being obtained with seashell than snow crab or shrimp shells. Furthermore, the data show that the addition of each layer, until reaching three layers, increases the elastic modulus. Moreover, if layers are crosslinked, the elastic modulus increases to a much greater extent. The characterization of three kinds of chitosan membranes was performed to find the most suitable material for studying different human skin properties.
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Affiliation(s)
- Rocío Guerle-Cavero
- Pharmaceutical Chemistry Research Group, Instituto Químico de Sarriá, 08017 Barcelona, Spain; (B.L.-F.); (A.B.-C.)
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9
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El-Mehalmey WA, Safwat Y, Bassyouni M, Alkordi MH. Strong Interplay between Polymer Surface Charge and MOF Cage Chemistry in Mixed-Matrix Membrane for Water Treatment Applications. ACS APPLIED MATERIALS & INTERFACES 2020; 12:27625-27631. [PMID: 32496035 DOI: 10.1021/acsami.0c06399] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Despite the large number of reports on the utilization of highly microporous solids, most relevant are metal-organic frameworks (MOFs), in different demanding applications, the successful hybridization of MOFs and moldable polymer matrices into flexible, water-permeable membranes exhibiting strong entanglement of the MOF and the polymer matrix properties is still lacking. We describe herein an efficient pathway to construct a mixed-matrix membrane (MMM) comprising a water-stable metal-organic framework (UiO-66-NH2), as the active sorbent, and cellulose acetate (CA), as the polymer matrix, to construct a flexible membrane for water treatment applications. The MOF@CA MMM demonstrated superior performance in terms of exceptional removal of organic dyes (both cationic and anionic species) as well as hexavalent Cr ions, compared to the control CA membrane. The recorded high uptake of the MOF@CA MMM for this wide array of contaminants demonstrated the accessibility of the MOF nanocages immobilized within the MMM, in contrast to the common perception that the polymer matrix might act as a physical barrier to block the accessibility of the MOF cages. The negative surface charge of the matrix exerted a notable action to affect the diffusion of the negatively charged contaminants to reach the active sorbent filler. Moreover, the formed membrane demonstrated high durability and recyclability with no detected loss of performance over numerous cycles. This approach outlines the ability to formulate one of the most water-stable MOFs, as exceptional microporous sorbent, into a usable membrane form compatible with real-life applications.
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Affiliation(s)
- Worood A El-Mehalmey
- Center for Materials Science, Zewail City of Science and Technology, October Gardens, 6th of October, Giza 12578, Egypt
| | - Youssef Safwat
- Center for Materials Science, Zewail City of Science and Technology, October Gardens, 6th of October, Giza 12578, Egypt
| | - Mohamed Bassyouni
- Center for Materials Science, Zewail City of Science and Technology, October Gardens, 6th of October, Giza 12578, Egypt
| | - Mohamed H Alkordi
- Center for Materials Science, Zewail City of Science and Technology, October Gardens, 6th of October, Giza 12578, Egypt
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Pillai MM, Elakkiya V, Lakshmipriya H, Gopinathan J, Selvakumar R, Bhattacharyya A. A novel method for developing three dimensional (3D) silk–PVA microenvironments for bone tissue engineering—an
in vitro
study. Biomed Phys Eng Express 2018. [DOI: 10.1088/2057-1976/aaa0af] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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11
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Das A, Ghosh P, Ganguly S, Banerjee D, Kargupta K. Salt-leaching technique for the synthesis of porous poly(2,5-benzimidazole) (ABPBI) membranes for fuel cell application. J Appl Polym Sci 2017. [DOI: 10.1002/app.45773] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Annesha Das
- Department of Chemical Engineering; Jadavpur University; Kolkata West Bengal 700032 India
| | - Priyanka Ghosh
- Department of Chemical Engineering; Jadavpur University; Kolkata West Bengal 700032 India
| | - Saibal Ganguly
- Department of Chemical Engineering; BITS Pilani, Goa Campus; Sancoale Goa India
| | - Dipali Banerjee
- Department of Physics; Indian Institute of Engineering Science and Technology (IIEST), Shibpur; Howrah West Bengal 711103 India
| | - Kajari Kargupta
- Department of Chemical Engineering; Jadavpur University; Kolkata West Bengal 700032 India
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12
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Salehi E, Daraei P, Arabi Shamsabadi A. A review on chitosan-based adsorptive membranes. Carbohydr Polym 2016; 152:419-432. [DOI: 10.1016/j.carbpol.2016.07.033] [Citation(s) in RCA: 216] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 07/03/2016] [Accepted: 07/08/2016] [Indexed: 12/11/2022]
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13
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Chitosan membrane adsorber for low concentration copper ion removal. Carbohydr Polym 2016; 146:274-81. [DOI: 10.1016/j.carbpol.2016.03.055] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 03/18/2016] [Accepted: 03/19/2016] [Indexed: 11/19/2022]
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14
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Jafari Sanjari A, Asghari M. A Review on Chitosan Utilization in Membrane Synthesis. CHEMBIOENG REVIEWS 2016. [DOI: 10.1002/cben.201500020] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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15
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Casey LS, Wilson LD. Investigation of Chitosan-PVA Composite Films and Their Adsorption Properties. ACTA ACUST UNITED AC 2015. [DOI: 10.4236/gep.2015.32013] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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16
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Chen F, Gällstedt M, Olsson RT, Gedde UW, Hedenqvist MS. A novel chitosan/wheat gluten biofoam fabricated by spontaneous mixing and vacuum-drying. RSC Adv 2015. [DOI: 10.1039/c5ra18569f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The pore formation and its structure.
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Affiliation(s)
- F. Chen
- KTH Royal Institute of Technology
- School of Chemical Science and Engineering
- Fibre and Polymer Technology
- SE-100 44 Stockholm
- Sweden
| | | | - R. T. Olsson
- KTH Royal Institute of Technology
- School of Chemical Science and Engineering
- Fibre and Polymer Technology
- SE-100 44 Stockholm
- Sweden
| | - U. W. Gedde
- KTH Royal Institute of Technology
- School of Chemical Science and Engineering
- Fibre and Polymer Technology
- SE-100 44 Stockholm
- Sweden
| | - M. S. Hedenqvist
- KTH Royal Institute of Technology
- School of Chemical Science and Engineering
- Fibre and Polymer Technology
- SE-100 44 Stockholm
- Sweden
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Song MY, Park HY, Yang DS, Bhattacharjya D, Yu JS. Seaweed-derived heteroatom-doped highly porous carbon as an electrocatalyst for the oxygen reduction reaction. CHEMSUSCHEM 2014; 7:1755-63. [PMID: 24809297 DOI: 10.1002/cssc.201400049] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Revised: 03/15/2014] [Indexed: 06/03/2023]
Abstract
We report the template-free pyrolysis of easily available natural seaweed, Undaria pinnatifida, as a single precursor, which results in "seaweed carbon" (SCup). Interestingly, thus-obtained SCup not only contains heteroatoms such as nitrogen and sulfur in its framework, but it also possesses a well-developed porous structure with high surface area. The heteroatoms in SCup originate from the nitrogen- and sulfur-containing ingredients in seaweed, whereas the porosity is created by removal of salts inherently present in the seaweed. These essential and fundamental properties make seaweed a prime choice as a precursor for heteroatom-containing highly porous carbon as a metal-free efficient electrocatalyst. As-synthesized SCup showed excellent electrocatalytic activity in the oxygen reduction reaction (ORR) in alkaline medium, which can be addressed in terms of the presence of the nitrogen and sulfur heteroatoms, the well-developed porosity, and the electrical conductivity in the carbon framework. The pyrolysis temperature was a key controlling parameter that determined the trade-off between heteroatom doping, surface properties, and electrical conductivity. In particular, SCup prepared at 1000 °C showed the best ORR performance. Additionally, SCup exhibited enhanced durability and methanol tolerance relative to the state of the art commercial Pt catalyst, which demonstrates that SCup is a promising alternative to costly Pt-based catalysts for the ORR.
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Affiliation(s)
- Min Young Song
- Advanced Materials Chemistry, Korea University, 2511 Sejong-ro, Sejong 339-700 (Republic of Korea), Fax: (+82)44-860-1331
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18
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Chitosan macroporous foams obtained in highly concentrated emulsions as templates. J Colloid Interface Sci 2013; 410:33-42. [DOI: 10.1016/j.jcis.2013.07.072] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 07/29/2013] [Accepted: 07/30/2013] [Indexed: 01/02/2023]
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19
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Mei L, Hu D, Ma J, Wang X, Yang Y, Liu J. Preparation, characterization and evaluation of chitosan macroporous for potential application in skin tissue engineering. Int J Biol Macromol 2012; 51:992-7. [DOI: 10.1016/j.ijbiomac.2012.08.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Revised: 07/27/2012] [Accepted: 08/02/2012] [Indexed: 10/28/2022]
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20
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Porous Copolymer Resins: Tuning Pore Structure and Surface Area with Non Reactive Porogens. NANOMATERIALS 2012; 2:163-186. [PMID: 28348302 PMCID: PMC5327895 DOI: 10.3390/nano2020163] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2012] [Revised: 05/16/2012] [Accepted: 05/29/2012] [Indexed: 12/03/2022]
Abstract
In this review, the preparation of porous copolymer resin (PCR) materials via suspension polymerization with variable properties are described by tuning the polymerization reaction, using solvents which act as porogens, to yield microporous, mesoporous, and macroporous materials. The porogenic properties of solvents are related to traditional solubility parameters which yield significant changes in the surface area, porosity, pore volume, and morphology of the polymeric materials. The mutual solubility characteristics of the solvents, monomer units, and the polymeric resins contribute to the formation of porous materials with tunable pore structures and surface areas. The importance of the initiator solubility, surface effects, the temporal variation of solvent composition during polymerization, and temperature effects contribute to the variable physicochemical properties of the PCR materials. An improved understanding of the factors governing the mechanism of formation for PCR materials will contribute to the development and design of versatile materials with tunable properties for a wide range of technical applications.
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21
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Preparation and characterization of chitosan nanopores membranes for the transport of drugs. Int J Pharm 2011; 420:371-7. [DOI: 10.1016/j.ijpharm.2011.08.049] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2011] [Revised: 08/16/2011] [Accepted: 08/29/2011] [Indexed: 11/18/2022]
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22
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Nonenzymatic glucose sensor based on a glassy carbon electrode modified with chains of platinum hollow nanoparticles and porous gold nanoparticles in a chitosan membrane. Mikrochim Acta 2010. [DOI: 10.1007/s00604-010-0485-z] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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23
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Han W, Bai R. A novel method for obtaining a high-concentration chitosan solution and preparing a high-strength chitosan hollow-fiber membrane with an excellent adsorption capacity. J Appl Polym Sci 2010. [DOI: 10.1002/app.31167] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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25
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Tang C, Zhang Q, Wang K, Fu Q, Zhang C. Water transport behavior of chitosan porous membranes containing multi-walled carbon nanotubes (MWNTs). J Memb Sci 2009. [DOI: 10.1016/j.memsci.2009.03.048] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Santos D, Neto C, Fonseca J, Pereira M. Chitosan macroporous asymmetric membranes—Preparation, characterization and transport of drugs. J Memb Sci 2008. [DOI: 10.1016/j.memsci.2008.07.050] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Chao AC. Preparation of porous chitosan/GPTMS hybrid membrane and its application in affinity sorption for tyrosinase purification with Agaricus bisporus. J Memb Sci 2008. [DOI: 10.1016/j.memsci.2007.12.032] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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