在复合质子交换膜中利用水不溶性氮化碳-磷钨酸混合物。

IF 3.3 4区工程技术 Q2 CHEMISTRY, PHYSICAL

Membranes Pub Date : 2024-09-13 DOI:10.3390/membranes14090195

Xiancan Yuan, Zhongrui Lu, Xiaoyang Jia, Zhuoran Yang, Jian Wang, Xiong Wang, Jun Lin, Shaojian He

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引用次数: 0

摘要

磷钨酸（HPW）可以在质子交换膜中保留水分，从而提高质子传导性；然而，其水溶性限制了进一步的应用。在这项工作中，我们通过烧结将磷钨酸和石墨氮化碳（g-C3N4）结合起来，制备了水不溶性杂化物（HWN），其中磷钨酸与 g-C3N4 通过化学连接固定了磷钨酸。然后，将 HWN 填料添加到磺化聚醚醚酮（SPEEK）基质中，制备出复合膜。含有 10 wt% HWN 的复合膜在室温下的电导率高达 0.066 S cm-1，比 SPEEK 对照膜（0.043 S cm-1）高出 53%。因此，我们的研究表明，通过烧结制备含有 HPW 成分的水不溶性纳米填料是一种很有前景的方法。

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Utilization of Water-Insoluble Carbon Nitride-Phosphotungstic Acid Hybrids in Composite Proton Exchange Membranes.

Phosphotungstic acid (HPW) can retain water in proton exchange membranes to increase proton conductivity; however, its water-soluble nature limits further application. In this work, we combined HPW and graphitic carbon nitride (g-C₃N₄) via sintering to prepare water-insoluble hybrids (HWN), where HPW was chemically linked to g-C₃N₄ to fix HPW. Then, HWN fillers were added to a sulfonated polyether ether ketone (SPEEK) matrix to prepare composite membranes. The conductivity of the composite membrane with 10 wt% HWN is up to 0.066 S cm^-1 at room temperature, which is 53% higher than that of the SPEEK control membrane (0.043 S cm^-1). The composite membrane also showed stable proton conductivity after being immersed in water for 2000 h. Therefore, our study demonstrates that preparing water-insoluble nanofillers containing HPW components through sintering is a promising approach.

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来源期刊

Membranes Chemical Engineering-Filtration and Separation

CiteScore

6.10

自引率

16.70%

发文量

1071

审稿时长

11 weeks

期刊介绍： Membranes (ISSN 2077-0375) is an international, peer-reviewed open access journal of separation science and technology. It publishes reviews, research articles, communications and technical notes. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. Full experimental and/or methodical details must be provided.