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V PN. Influence of sulfonated SBA - 15 on fuel cell performance of sulfonated polysulfone electrolyte membranes. HIGH PERFORM POLYM 2022. [DOI: 10.1177/09540083221144257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The prepared mesoporous SBA-15 (Santa Barbara Amorphous-15) was sulfonated and used as filler for the preparation of sulfonated polysulfone based composite electrolyte membranes. The SBA-15 and polysulfone were sulfonated using 3-mercaptopropyl trimethoxysilane and trimethylsilyl chlorosulfonate, respectively. The different weight percentages (1, 3, and 5 wt%) of sulfonated SBA-15 (SSBA-15) were used to prepare composite electrolyte membranes. Water uptake, ion exchange capacity, swelling ratio and proton conductivity of the composite membranes were studied for assessing the suitability of the electrolyte membranes for use in fuel cells. Characterization techniques such as FT-IR, XRD, SEM, TEM and Brunauer–Emmett– Teller were used to study the physico-chemical properties of the electrolyte membranes. TEM and BET analysis showed that SBA -15 retained its mesoporous structure even after sulfonation process. The prepared membranes were then tested in an in-house built single-cell fuel cell using hydrogen as fuel and oxygen as the oxidant. The fuel cell study showed that the presence of Sulfonated SBA-15 in the polymer matrix provided additional ion exchange sites and retained water for proton transfer which resulted in higher power density of 815 mW/cm2 with SPSU + 3% SSBA-15 membrane as compared with Nafion 117®.
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Affiliation(s)
- Prabhu N V
- Department of Chemistry, Easwari Engineering College, Chennai, India
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2
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Ekambaram R, Dharmalingam S. Design and development of biomimetic electrospun sulphonated polyether ether ketone nanofibrous scaffold for bone tissue regeneration applications: in vitro and in vivo study. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2022; 33:947-975. [PMID: 34985405 DOI: 10.1080/09205063.2022.2025637] [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: 10/21/2021] [Revised: 12/30/2021] [Accepted: 01/02/2022] [Indexed: 06/14/2023]
Abstract
Bone defect restoration remains challenging in orthopedic medical practices. In this study an attempt is carried out to probe the use of new biomimetic SPEEK (sulfonated polyether ether ketone) based nanofibrous scaffold to deliver amine functionalized hydroxyapatite nanoparticles loaded resveratrol for its potent functionality in osteogenic differentiation. SPEEK polymer with reactive functional group SO3H was synthesized through process of sulphonation reaction. Amine functionalized nanoparticles with protonated amino groups revamp the molecular interaction by the formation of hydrogen bonds that in turn intensify the bioactivity of the nanofibrous scaffold. Osteoconductive functionalized nanohydroxyapatite enhances the cell proliferation and osteogenicity with improved cell attachment and spreading. The results of FT-IR, XRD, Carbon-Silica NMR and EDX analysis confirmed the amine functionalization of the hydroxyapatite nanoparticles. Surface morphological analysis of the fabricated nanofibers through SEM and AFM analysis shows vastly interconnected porous structure that mimics the bone extracellular matrix, which enhances the cell compatibility. Cell adhesion and live dead assay of the nanoscaffolds express less cytotoxicity. Mineralization and alkaline phosphatase assay establish the osteogenic differentiation of the nanofibrous scaffold. The in vitro biocompatibility studies reveal that the fabricated scaffold was osteo-compatible with MG63 cell lines. Hemocompatibility study further proved that the designed biomimetic nanofibrous scaffold was highly suitable for bone tissue engineering. The results of in vivo analysis in zebrafish model for the fabricated nanofibers demonstrated significant increase in the caudal fin regeneration indicating mineralization of osteoblast. Thus, the commending results obtained instigate the potentiality of the composite nanofibrous scaffold as an effective biomimetic substrate for bone tissue regeneration.
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Narducci R, Sgreccia E, Knauth P, Di Vona ML. Anion Exchange Membranes with 1D, 2D and 3D Fillers: A Review. Polymers (Basel) 2021; 13:3887. [PMID: 34833189 PMCID: PMC8622584 DOI: 10.3390/polym13223887] [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: 10/22/2021] [Revised: 11/05/2021] [Accepted: 11/08/2021] [Indexed: 11/30/2022] Open
Abstract
Hydroxide exchange membrane fuel cells (AEMFC) are clean energy conversion devices that are an attractive alternative to the more common proton exchange membrane fuel cells (PEMFCs), because they present, among others, the advantage of not using noble metals like platinum as catalysts for the oxygen reduction reaction. The interest in this technology has increased exponentially over the recent years. Unfortunately, the low durability of anion exchange membranes (AEM) in basic conditions limits their use on a large scale. We present in this review composite AEM with one-dimensional, two-dimensional and three-dimensional fillers, an approach commonly used to enhance the fuel cell performance and stability. The most important filler types, which are discussed in this review, are carbon and titanate nanotubes, graphene and graphene oxide, layered double hydroxides, silica and zirconia nanoparticles. The functionalization of the fillers is the most important key to successful property improvement. The recent progress of mechanical properties, ionic conductivity and FC performances of composite AEM is critically reviewed.
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Affiliation(s)
- Riccardo Narducci
- Department Industrial Engineering and International Laboratory “Ionomer Materials for Energy”, University of Rome Tor Vergata, I-00133 Rome, Italy; (E.S.); (M.L.D.V.)
| | - Emanuela Sgreccia
- Department Industrial Engineering and International Laboratory “Ionomer Materials for Energy”, University of Rome Tor Vergata, I-00133 Rome, Italy; (E.S.); (M.L.D.V.)
| | - Philippe Knauth
- CNRS, Madirel (UMR 7246) and International Laboratory “Ionomer Materials for Energy”, Aix Marseille University, F-13013 Marseille, France;
| | - Maria Luisa Di Vona
- Department Industrial Engineering and International Laboratory “Ionomer Materials for Energy”, University of Rome Tor Vergata, I-00133 Rome, Italy; (E.S.); (M.L.D.V.)
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Ekambaram R, Paraman V, Raja L, Suresh MK, Dharmalingam S. Design and development of electrospun SPEEK incorporated with aminated zirconia and curcumin nanofibers for periodontal regeneration. J Mech Behav Biomed Mater 2021; 123:104796. [PMID: 34464901 DOI: 10.1016/j.jmbbm.2021.104796] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 08/19/2021] [Accepted: 08/22/2021] [Indexed: 10/20/2022]
Abstract
Periodontal disease disturbs the supportive tissues around the teeth such as connective tissue, gingival tissue, periodontal ligaments and alveolar bone. Previously, treatment of periodontitis was embattled by repopulating the affected site with cells that has capacity to regenerate damaged tissue by endorsing the perception of guided tissue regeneration but it entails additional surgery owing to non-biodegradability. Biodegradable polymeric nanofibrous scaffold imitating extracellular matrix (ECM) delivering functionalized nanoparticles loaded with therapeutic drug have the ability to support cellular functions thereby enhancing regeneration. Present study explores novel amine functionalized zirconia nanoparticle loaded curcumin incorporated SPEEK nanofibrous scaffolds to address periodontal regeneration. Zirconia - crown of dental therapeutics, its amine functionalization further enhanced the strength and cyto-compatibility. Carbon-Silica NMR (59.9 and 69.8 ppm), FT-IR (3426 cm-1), EDAX and XRD (28.9°, 31.6° and 38.2° pertaining to [-1 1 1], [1 1 1] and [1 2 0] planes) analysis confirmed the effective functionalization of the zirconia nanoparticle with the amine group. Electrospinning was carried out at a voltage of 20 kV and flow rate of 0.05 ml/h. Fabricated nanofibers were highly dense, porous with interconnected fibrous structures that bio-mimic ECM. They exhibited an average diameter of 187 ± 2 nm (SPEEK), 192 ± 2 nm (SPEEK + NH2-ZrO2), and 256 ± 17 nm (SPEEK + NH2-ZrO2+Cur). Extensively discovered anti-bacterial traits of curcumin supplemented the advantage for the treatment of periodontitis. Incorporated materials improve the physico-chemical, mechanical and biological characteristics of nanofibers. FT-IR, EDAX and XRD analysis of the fabricated nanofibrous scaffold demonstrated the effective incorporation of aminated zirconia loaded curcumin. Results of cyto-compatibility analysis of SPEEK + NH2-ZrO2+Cur nanofibrous scaffold depicted a cell viability of 100 ± 1.62%. Results of anti-bacterial assay with zone of inhibition was 6.5 ± 0.5 mm (SPEEK), 7.5 ± 1 mm (SPEEK + NH2-ZrO2), and 8 ± 1 mm (SPEEK + NH2-ZrO2+Cur). Thus, the fabricated bio-material is cyto-compatible, non-toxic and effective against pathogens exploiting higher potential for periodontal regeneration applications.
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Affiliation(s)
| | - Vikas Paraman
- Department of Mechanical Engineering, Anna University, Chennai, Tamil Nadu, India
| | - Lokeshwar Raja
- Department of Mechanical Engineering, Anna University, Chennai, Tamil Nadu, India
| | - Manoj Kumar Suresh
- Department of Mechanical Engineering, Anna University, Chennai, Tamil Nadu, India
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Vijayakumar V, Son TY, Im KS, Chae JE, Kim HJ, Kim TH, Nam SY. Anion Exchange Composite Membranes Composed of Quaternary Ammonium-Functionalized Poly(2,6-dimethyl-1,4-phenylene oxide) and Silica for Fuel Cell Application. ACS OMEGA 2021; 6:10168-10179. [PMID: 34056171 PMCID: PMC8153668 DOI: 10.1021/acsomega.1c00247] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 03/22/2021] [Indexed: 06/12/2023]
Abstract
Anion exchange membranes (AEMs) with good alkaline stability and ion conductivity are fabricated by incorporating quaternary ammonium-modified silica into quaternary ammonium-functionalized poly(2,6-dimethyl-1,4-phenylene oxide) (QPPO). Quaternary ammonium with a long alkyl chain is chemically grafted to the silica in situ during synthesis. Glycidyltrimethylammoniumchloride functionalization on silica (QSiO2) is characterized by Fourier transform infrared and transmission electron microscopic techniques. The QPPO/QSiO2 membrane having an ion exchange capacity of 3.21 meq·g-1 exhibits the maximum hydration number (λ = 11.15) and highest hydroxide ion conductivity of 45.08 × 10-2 S cm-1 at 80 °C. In addition to the high ion conductivity, AEMs also exhibit good alkaline stability, and the conductivity retention of the QPPO/QSiO2-3 membrane after 1200 h of exposure in 1 M potassium hydroxide at room temperature is about 91% ascribed to the steric hindrance offered by the grafted long glycidyl trimethylammonium chain in QSiO2. The application of the QPPO/QSiO2-3 membrane to an alkaline fuel cell can yield a peak power density of 142 mW cm-2 at a current density of 323 mA cm-2 and 0.44 V, which is higher than those of commercially available FAA-3-50 Fumatech AEM (OCV: 0.91 V; maximum power density: 114 mW cm-2 at current density: 266 mA cm-2 and 0.43 V). These membranes provide valuable insights on future directions for advanced AEM development for fuel cells.
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Affiliation(s)
- Vijayalekshmi Vijayakumar
- Department
of Materials Engineering and Convergence Technology, Gyeongsang National University, Jinju 52828, Republic
of Korea
| | - Tae Yang Son
- Department
of Materials Engineering and Convergence Technology, Gyeongsang National University, Jinju 52828, Republic
of Korea
| | - Kwang Seop Im
- Department
of Materials Engineering and Convergence Technology, Gyeongsang National University, Jinju 52828, Republic
of Korea
| | - Ji Eon Chae
- Fuel
Cell Research Center, Korea Institute of
Science and Technology, Seoul 02792, Republic of Korea
| | - Hyoung Juhn Kim
- Fuel
Cell Research Center, Korea Institute of
Science and Technology, Seoul 02792, Republic of Korea
| | - Tae Hyun Kim
- Organic
Material Synthesis Laboratory, Department of Chemistry, Incheon National University, Incheon 22012, Republic of Korea
| | - Sang Yong Nam
- Department
of Materials Engineering and Convergence Technology, Gyeongsang National University, Jinju 52828, Republic
of Korea
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Suhail F, Batool M, Shah AT, Tabassum S, Khan AL, Gilani MA. Highly CO2 selective mixed matrix membranes of polysulfone based on hetaryl modified SBA-16 particles. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117999] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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A Composite Anion Conducting Membrane Based on Quaternized Cellulose and Poly(Phenylene Oxide) for Alkaline Fuel Cell Applications. Polymers (Basel) 2020; 12:polym12112676. [PMID: 33198387 PMCID: PMC7696857 DOI: 10.3390/polym12112676] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 10/31/2020] [Accepted: 11/04/2020] [Indexed: 11/16/2022] Open
Abstract
In this study, composite anion exchange membranes (AEMs) were synthesized by cross-linking poly(phenylene oxide) (PPO) with cellulose functionalized by 1,4-diazabicyclo[2.2.2]-octane (DABCO) or di-guanidine (DG). The structural and morphological characteristics of the synthesized AEMs were characterized by FTIR, 1H-NMR, SEM, TEM, and AFM, while their performance was evaluated in terms of ionic conductivity, water uptake, ion exchange capacity, and tensile strength with respect to the loading of the quaternized cellulose in the quaternized PPO (qPPO) matrix. The composite AEMs exhibited considerably enhanced mechanical and alkaline stability as well as good anion conductivity. The composite AEM with 7 wt% of cellulose functionalized with DG in the qPPO matrix (qPPO/DG-Cel7) exhibited a maximum hydroxide conductivity of 0.164 S cm-1. Furthermore, a urea/O2 fuel cell prepared using this composite membrane showed a maximum power density of 12.3 mW cm-2. The results indicated that the cellulose-based composite membranes showed a satisfactory performance in alkaline fuel cell applications.
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Chu JY, Lee KH, Kim AR, Yoo DJ. Improved electrochemical performance of composite anion exchange membranes for fuel cells through cross linking of the polymer chain with functionalized graphene oxide. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118385] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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9
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Rathinavel S, Ekambaram S, Korrapati PS, Sangeetha D. Design and fabrication of electrospun SBA-15-incorporated PVA with curcumin: a biomimetic nanoscaffold for skin tissue engineering. Biomed Mater 2020; 15:035009. [PMID: 31935710 DOI: 10.1088/1748-605x/ab6b2f] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Fabricating and designing a scaffold is a complex and highly challenging process in the current scenario. The present study deals with the design and fabrication of electrospun Santa Barbara Amorphous (SBA)-15-incorporated polyvinyl alcohol (PVA) with curcumin, which can be used as a biomimetic nanoscaffold for skin tissue engineering. Curcumin was selected due to its effective anti-microbial and anti-inflammatory properties. SBA-15 was selected for its characteristic drug-carrying potential. Fourier transform infrared spectroscopy and x-ray diffraction characterizations of the fabricated nanofiber demonstrated the interaction of PVA, SBA-15 and curcumin. The scanning electron microscopy results depicted that the nanofiber was highly interconnected with a porous structure mimicking the extracellular matrix. The nanofibrous scaffold showed a higher percentage of cell migration, proliferation, cytocompatibility and biocompatibility with absence of cytotoxicity which was evidenced from the results of MTT assay, cell adhesion and live/dead assay using HaCaT cells. The results of the anti-bacterial test depicted that the synthesized nanofiber forms a potent material for skin wound-healing therapeutics. The in vitro drug release study performed over a period of 80 h revealed a sustained release pattern of curcumin from the SBA-15-incorporated PVA nanofiber. Finally, the in vivo results confirmed that SBA-15-incorporated PVA nanofiber with curcumin showed efficient wound-healing activities.
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Vijayakumar V, Son TY, Kim HJ, Nam SY. A facile approach to fabricate poly(2,6-dimethyl-1,4-phenylene oxide) based anion exchange membranes with extended alkaline stability and ion conductivity for fuel cell applications. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2019.117314] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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11
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Phosphonated mesoporous silica based composite membranes for high temperature proton exchange membrane fuel cells. J Solid State Electrochem 2019. [DOI: 10.1007/s10008-019-04290-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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12
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Preparation of tungstic acid functionalized titanium oxide nanotubes and its effect on proton exchange membrane fuel cell. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-0358-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Elumalai V, Kavya Sravanthi CK, Sangeetha D. Synthesis characterization and performance evaluation of tungstic acid functionalized SBA-15/SPEEK composite membrane for proton exchange membrane fuel cell. APPLIED NANOSCIENCE 2019. [DOI: 10.1007/s13204-019-01005-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Vijayakumar V, Nam SY. Recent advancements in applications of alkaline anion exchange membranes for polymer electrolyte fuel cells. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2018.10.026] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Wu X, Xie Z, Wang H, Zhao C, Ng D, Zhang K. Improved filtration performance and antifouling properties of polyethersulfone ultrafiltration membranes by blending with carboxylic acid functionalized polysulfone. RSC Adv 2018; 8:7774-7784. [PMID: 35539120 PMCID: PMC9078463 DOI: 10.1039/c7ra12447c] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 02/13/2018] [Indexed: 11/21/2022] Open
Abstract
Ultrafiltration membranes with improved filtration performance and antifouling properties have been synthesized through blending polyethersulfone with carboxylic acid functionalized polysulfone.
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Affiliation(s)
- Xing Wu
- Key Laboratory of Urban Pollutant Conversion
- Institute of Urban Environment
- Chinese Academy of Sciences
- Xiamen
- China
| | - Zongli Xie
- CSIRO Manufacturing
- Clayton South
- Australia
| | - Huanting Wang
- Department of Chemical Engineering
- Monash University
- Clayton
- Australia
| | - Chen Zhao
- Department of Chemical Engineering
- Monash University
- Clayton
- Australia
| | - Derrick Ng
- CSIRO Manufacturing
- Clayton South
- Australia
| | - Kaisong Zhang
- Key Laboratory of Urban Pollutant Conversion
- Institute of Urban Environment
- Chinese Academy of Sciences
- Xiamen
- China
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Effect of pore-directing agents in SBA-15 nanoparticles on the performance of Nafion®/SBA-15n composite membranes for DMFC. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2016.11.054] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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He X, Gang M, He G, Yin Y, Cao L, Wu H, Jiang Z. One-Pot Synthesis of Chloromethylated Mesoporous Silica Nanoparticles as Multifunctional Fillers in Hybrid Anion Exchange Membranes. CHINESE J CHEM 2017. [DOI: 10.1002/cjoc.201600577] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xueyi He
- Key Laboratory for Green Technology of Ministry of Education, School of Chemical Engineering and Technology; Tianjin University; Tianjin 300072 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300072 China
| | - Mingyue Gang
- Key Laboratory for Green Technology of Ministry of Education, School of Chemical Engineering and Technology; Tianjin University; Tianjin 300072 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300072 China
| | - Guangwei He
- Key Laboratory for Green Technology of Ministry of Education, School of Chemical Engineering and Technology; Tianjin University; Tianjin 300072 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300072 China
| | - Yongheng Yin
- Key Laboratory for Green Technology of Ministry of Education, School of Chemical Engineering and Technology; Tianjin University; Tianjin 300072 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300072 China
| | - Li Cao
- Key Laboratory for Green Technology of Ministry of Education, School of Chemical Engineering and Technology; Tianjin University; Tianjin 300072 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300072 China
| | - Hong Wu
- Key Laboratory for Green Technology of Ministry of Education, School of Chemical Engineering and Technology; Tianjin University; Tianjin 300072 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300072 China
| | - Zhongyi Jiang
- Key Laboratory for Green Technology of Ministry of Education, School of Chemical Engineering and Technology; Tianjin University; Tianjin 300072 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300072 China
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Liu M, Wang Z, Mei J, Xu J, Xu L, Han H, Ni H, Wang S. A facile functionalized routine for the synthesis of imidazolium-based anion-exchange membrane with excellent alkaline stability. J Memb Sci 2016. [DOI: 10.1016/j.memsci.2016.01.036] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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19
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Yang CW, Chen KH, Cheng S. Effect of pore-directing agents and silanol groups in mesoporous silica nanoparticles as Nafion fillers on the performance of DMFCs. RSC Adv 2016. [DOI: 10.1039/c6ra24210c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Pore-directing agents in SBA-15 and MSN mesopores could resist methanol crossover, while only P123 inside SBA-15 could assist proton transferring. But, highest proton conductivity was obtained on membranes with extracted MSN of high silanol contents.
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Affiliation(s)
- Ciao-Wei Yang
- Department of Chemistry
- National Taiwan University
- Taipei 10617
- Taiwan
| | - Kuei-Hsien Chen
- Institute of Atomic & Molecular Sciences
- Academia Sinica
- Taipei 10617
- Taiwan
| | - Soofin Cheng
- Department of Chemistry
- National Taiwan University
- Taipei 10617
- Taiwan
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