二维 (2D) CoNH2BDC MOF 混合体支持的脱层碳化钒 MXene 用于提高水分离效果

IF 3.8 3区 工程技术 Q2 ENGINEERING, CHEMICAL
Maida Murtaza, Laiba Saleem, Waqas Ali Shah, Iftikhar Ahmad, Hussain Alawadhi, Amir Waseem
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引用次数: 0

摘要

水分离一直被认为是可持续能源生产技术中最有利的做法之一。金属有机框架(MOFs)具有孔隙率高、电荷转移速度快、结构可调以及比表面积大等特点,已被公认为电催化剂的有效候选材料。具有导电性二维 MXene 纳米片的 MOFs 可显著增强 OER 和 HER 的电催化活性。在这项工作中,通过一步溶热反应策略,氨基对苯二甲酸钴 MOF(CoNH2BDC)与碳化钒(V2C)MXene 结合在了一起。这归功于 CoNH2BDC 的高孔隙率和大比表面积;V2C 的高导电性和亲水性增强了 CoNH2BDC/V2C 的电催化活性,并加快了 CoNH2BDC-V2C 界面的电荷转移。在一系列 V2C 和 MOF 比例不同的催化剂中,CoNBDC/VC3 是在碱性介质中显示出最佳 OER 和 HER 活性的催化剂,它在 145 mV 的 OER 和 102 mV 的 RHE 条件下分别达到了 10 mA cm-2 和 10 mA cm-2 的电流密度。RHE 时的电流密度为 10 mA cm-2,OER 的塔菲尔斜率值为 50 mV/dec,HER 的塔菲尔斜率值为 55 mV/dec。我们相信,这项工作展示了高效的电催化性能,而构建这种混合材料可以为开发用于绿色能源生产的高效电催化剂铺平新的道路。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Delaminated Vanadium Carbide MXene Supported Two-Dimensional (2D) CoNH2BDC MOF Hybrid for Enhanced Water Splitting

Delaminated Vanadium Carbide MXene Supported Two-Dimensional (2D) CoNH2BDC MOF Hybrid for Enhanced Water Splitting
Water splitting has been regarded as one of the most favorable practices in sustainable energy production technologies. Metal organic frameworks (MOFs) have been recognized as potent candidates as electrocatalysts due to their high porosity, faster charge transfer, tunable structure, and large surface area. MOFs with electrically conductive 2D MXene nanosheets can significantly result in enhanced electrocatalytic activity for both the OER and HER. In this work, cobalt aminoterephthalic acid MOF (CoNH2BDC) was combined with vanadium carbide (V2C) MXene via a one-step solvothermal reaction strategy. Credit goes to the high porosity and large surface area of CoNH2BDC; high electrical conductivity and hydrophilicity of V2C for enhanced electrocatalytic activity of CoNH2BDC/V2C, and faster charge transfer across the CoNH2BDC-V2C interface. Among the series of catalysts with varying ratios of V2C and MOF, the catalyst that showed best OER and HER activity in alkaline medium was CoNBDC/VC3, it attained a current density of 10 mA cm–2 at 145 mV for OER and 102 mV Vs. RHE for HER, and a Tafel slope value of 50 mV/dec for OER and 55 mV/dec for HER. We believe that this work is demonstration of highly efficient electrocatalytic performance and construction of such hybrid materials can pave new pathways with regard to developing efficient electrocatalysts for green energy production.
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来源期刊
Industrial & Engineering Chemistry Research
Industrial & Engineering Chemistry Research 工程技术-工程:化工
CiteScore
7.40
自引率
7.10%
发文量
1467
审稿时长
2.8 months
期刊介绍: ndustrial & Engineering Chemistry, with variations in title and format, has been published since 1909 by the American Chemical Society. Industrial & Engineering Chemistry Research is a weekly publication that reports industrial and academic research in the broad fields of applied chemistry and chemical engineering with special focus on fundamentals, processes, and products.
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