The Effect of Ru/PMC Hydrogel Composite for Water-Splitting Applications

IF 2.7 4区化学 Q3 CHEMISTRY, PHYSICAL

Electrocatalysis Pub Date : 2024-10-29 DOI:10.1007/s12678-024-00911-9

Aykut Caglar, Mehmet Zahmakiran, Hilal Kivrak

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Abstract

Herein, poly(methacrylic acid) (PMAA) and PMAA-g-carbon nanotube (CNT) (PMC) hydrogel composites were prepared using the redox polymerization method. PMAA and PMC hydrogel composites were coated with the Ru metal electrochemical deposition method to be used as electrocatalysts in water-splitting applications. Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy–energy dispersive X-ray (SEM–EDX) and mapping, transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS) techniques were used to characterize the hydrogel composites. The electrochemical properties of these hydrogel composites were examined using techniques including linear sweep voltammetry (LSV), chronoamperometry (CA), and electrochemical impedance spectroscopy (EIS) measurements. The activities of hydrogel composites against both oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) were examined for water-splitting applications. The electrochemical results indicated that the Ru/PMC hydrogel composite exhibited high catalytic activity for both OER and HER in alkaline media.

Graphical Abstract

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Ru/PMC水凝胶复合材料对水裂解应用的影响

本文采用氧化还原聚合法制备了聚（甲基丙烯酸）（PMAA）和 PMAA-g- 碳纳米管（CNT）（PMC）水凝胶复合材料。采用 Ru 金属电化学沉积法在 PMAA 和 PMC 水凝胶复合材料上涂覆 Ru 金属，以用作水分离应用中的电催化剂。傅立叶变换红外光谱（FTIR）、X 射线衍射（XRD）、拉曼光谱、扫描电子显微镜-能量色散 X 射线（SEM-EDX）和绘图、透射电子显微镜（TEM）以及 X 射线光电子能谱（XPS）技术被用于表征水凝胶复合材料。使用线性扫描伏安法（LSV）、计时阻抗法（CA）和电化学阻抗光谱法（EIS）等技术检测了这些水凝胶复合材料的电化学特性。研究了水凝胶复合材料在水分离应用中对氧进化反应（OER）和氢进化反应（HER）的活性。电化学结果表明，Ru/PMC水凝胶复合材料在碱性介质中对氧进化反应和氢进化反应都表现出很高的催化活性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Electrocatalysis CHEMISTRY, PHYSICAL-ELECTROCHEMISTRY

CiteScore

4.80

自引率

6.50%

发文量

审稿时长

>12 weeks

期刊介绍： Electrocatalysis is cross-disciplinary in nature, and attracts the interest of chemists, physicists, biochemists, surface and materials scientists, and engineers. Electrocatalysis provides the unique international forum solely dedicated to the exchange of novel ideas in electrocatalysis for academic, government, and industrial researchers. Quick publication of new results, concepts, and inventions made involving Electrocatalysis stimulates scientific discoveries and breakthroughs, promotes the scientific and engineering concepts that are critical to the development of novel electrochemical technologies. Electrocatalysis publishes original submissions in the form of letters, research papers, review articles, book reviews, and educational papers. Letters are preliminary reports that communicate new and important findings. Regular research papers are complete reports of new results, and their analysis and discussion. Review articles critically and constructively examine development in areas of electrocatalysis that are of broad interest and importance. Educational papers discuss important concepts whose understanding is vital to advances in theoretical and experimental aspects of electrochemical reactions.