钌催化剂组装的聚合物网络用于增强钙钛矿染料敏化光电化学电池的水分离性能。

IF 7.5 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
ChemSusChem Pub Date : 2024-11-21 DOI:10.1002/cssc.202402395
Xiao-Lin Wang, Li-Lin Tan, Yang Liu, Jia-Xin Liu, Xin-Ao Li, Zi-Zhan Liang, Jian-Feng Huang, Jun-Min Liu
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引用次数: 0

摘要

近年来,用于构建低成本、环保型染料敏化光电化学电池(DSPECs)的无金属光敏剂得到了极大的改进,但基于无金属染料的 DSPECs 中使用的水氧化催化剂(WOCs)的优化却很少受到关注。在此,我们构建了一系列由钌水氧化催化剂(RuCHO)与各种有机供体组装而成的聚合物网络(RuTPA、RuCz、RuPr 和 RuTz),并将其与霞石染料相结合,制备了 DSPEC 器件。FTO|TiO2|C4BTP+RuTPA光阳极显示出最佳性能,氧气产生的法拉第效率为85%,在0 V对Ag/AgCl进行200 s斩波照射后的光电流密度为477 μA cm-2,是其他已报道的染料敏化光阳极中最高记录之一。与单体 RuCHO 相比,Ru 含量较低的 Ru 基聚合物因其快速的电子传递和抗聚集能力而具有更高的活性和稳定性。同时,负载 RuTPA 的电极由于其供体具有较高的电子捐赠能力,因此水氧化反应的过电位较低,从而表现出更好的性能。这项开创性的工作将 Ru 聚合物网络作为 WOC 纳入了钙钛矿敏化 DSPEC 系统,该系统作为一种高效、稳定的光电化学分水装置具有巨大的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Polymer Networks Assembled by Ruthenium Catalysts for Enhanced Water Splitting Performance in Calixarene Dye-Sensitized Photoelectrochemical Cells.

Metal-free photosensitizers for the construction of low-cost and eco-friendly dye-sensitized photoelectrochemical cells (DSPECs) have recently been greatly improved, but the optimization of water oxidation catalysts (WOCs) used in DSPECs based on metal-free dyes has received little attention. Herein, a series of polymer networks (RuTPA, RuCz, RuPr and RuTz) assembled by ruthenium WOCs (RuCHO) with various organic donors are constructed and combined with calixarene dyes to prepare DSPEC devices. The FTO|TiO2|C4BTP+RuTPA photoanode shows the best performance with 85 % Faraday efficiency for oxygen production and 477 μA cm-2 photocurrent density after 200 s chopping irradiation at 0 V vs. Ag/AgCl, one of the highest records among other reported dye-sensitized photoanodes. Compared to monomeric RuCHO, Ru-based polymers with lower Ru content have higher activity and stability due to their rapid electron transfer and anti-aggregation ability. Meanwhile, RuTPA loaded electrodes show better performance due to the lower overpotential of the water oxidation reaction caused by the higher electron donating ability of its donor. This pioneering work incorporates Ru polymer networks as WOCs into the calixarene-sensitized DSPEC system, which has significant potential as a highly efficient and stable photoelectrochemical water splitting device.

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来源期刊
ChemSusChem
ChemSusChem 化学-化学综合
CiteScore
15.80
自引率
4.80%
发文量
555
审稿时长
1.8 months
期刊介绍: ChemSusChem Impact Factor (2016): 7.226 Scope: Interdisciplinary journal Focuses on research at the interface of chemistry and sustainability Features the best research on sustainability and energy Areas Covered: Chemistry Materials Science Chemical Engineering Biotechnology
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