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用于下一代复合质子传导扁平结构的壳聚糖离子凝胶化

Ionotropic Gelation of Chitosan for Next-Generation Composite Proton Conducting Flat Structures.

作者信息

Bocchetta Patrizia

机构信息

Dipartimento di Ingegneria dell'Innovazione, Università del Salento via Monteroni, 73100 Lecce, Italy.

出版信息

Molecules. 2020 Apr 2;25(7):1632. doi: 10.3390/molecules25071632.

Abstract

(1) Background: Ionotropic gelation of cost-effective and eco-friendly biopolymer chitosan (Chit) is a novel and promising approach to the one-step synthesis of proton-conducting fuel cell bio-membranes.The method discovered by the author in 2011 and subsequently drowned among very few papers. This work aimed to relaunch this method through clear and effective communication of new unpublished results emphasizing the key aspects of this topic for successful dissemination of the results and significant future developments. (2) Methods and results: The mechanism of in-situ ionotropic gelation of Chit on an alumina substrate by phosphotungtate anions (PWA) was discussed and analyzed. The study sheds light on the effect of prolonged post-treatment in phosphotungstic acid (PWA) solution on the obtained chitosan/phosphotungstate (Chit-PWA) flat structures. Methods used included combined structural (XRD), thermal-gravimetric (DTG), electrochemical (in-situ EIS), compositional (EDX),morphological analysis (SEM), as well as the performances in a low temperature H/O fuel cell(4) Conclusions: This contribution discloses novel possibilities aimed at increasing the impact of ionotropic gelation of chitosan on the scientific community working on the synthesis of novel proton conductive bio-composite membranes and structures.

摘要

(1) 背景:具有成本效益且环保的生物聚合物壳聚糖(Chit)的离子otropic凝胶化是一种新颖且有前景的一步合成质子传导燃料电池生物膜的方法。作者在2011年发现的该方法,随后淹没在极少的论文中。这项工作旨在通过清晰有效地传达新的未发表结果来重新推出该方法,强调该主题的关键方面以成功传播结果并实现重大的未来发展。(2) 方法和结果:讨论并分析了磷钨酸阴离子(PWA)在氧化铝基底上使壳聚糖原位离子otropic凝胶化的机制。该研究揭示了在磷钨酸(PWA)溶液中长时间后处理对所得壳聚糖/磷钨酸盐(Chit-PWA)扁平结构的影响。所使用的方法包括组合结构(XRD)、热重(DTG)、电化学(原位EIS)、成分(EDX)、形态分析(SEM),以及在低温H/O燃料电池中的性能(4) 结论:本研究揭示了新的可能性,旨在增强壳聚糖离子otropic凝胶化对致力于新型质子传导生物复合膜和结构合成的科学界的影响。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/48c5/7180786/2c8ec295e1cc/molecules-25-01632-g001.jpg

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