磷化铜纳米粒子的简便合成与表征--作为氢氧进化反应的高效电催化剂

IF 2.9 4区 综合性期刊 Q1 Multidisciplinary
Muhammad Rizwan Shakir, Samina Akbar, Imran Raza, Muhammad Awais, Saima Rehman
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引用次数: 0

摘要

电催化水分离被认为是最重要和最可持续的制氢方法之一。为了使这一过程更高效、更经济,有必要开发坚固、廉价、高活性和稳定的电催化剂。在此,我们采用溶解热工艺轻松合成了尺寸为 30 至 80 纳米的磷化铜纳米颗粒(Cu3P NPs)。傅立叶变换红外光谱(FTIR)、X射线衍射(XRD)、拉曼光谱、动态光散射和扫描电子显微镜(SEM-EDX)等多种表征技术验证了球形形态的 Cu3P NPs 的成功合成。电化学表征采用了三电极系统,分别以玻璃碳、铂网和 Hg/HgO 作为工作电极、对电极和参比电极。电化学研究,即 CV、LSV 和时变分析,揭示了电催化剂在电解水(包括氢进化反应(HER)和氧进化反应(OER))方面的效率和稳定性。简而言之,Cu3P NPs 表现出优异的 OER 活性,在 450 mV 的过电位下电流密度达到 10 mA cm-2。塔菲尔斜率值为 63 mV dec-1,表明 OER 反应动力学速度很快。Cu3P 催化剂也表现出显著的 HER 活性,电流密度接近 10 mA cm-2,过电位为 447 mV。观察到快速的 HER 反应动力学,Tafel 斜率值为 132 mV dec-1。此外,时变研究表明,电催化剂具有稳定性,为可持续的、长期的氧气和氢气生产提供了有利条件。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Facile Synthesis and Characterization of Copper Phosphide Nanoparticles as Efficient Electrocatalyst for Hydrogen and Oxygen Evolution Reaction

Facile Synthesis and Characterization of Copper Phosphide Nanoparticles as Efficient Electrocatalyst for Hydrogen and Oxygen Evolution Reaction

Electrocatalytic water splitting has been considered as one of the most significant and sustainable approaches for hydrogen production. To make the process more efficient and affordable, there is a need to develop robust, cheap, highly active and stable electrocatalysts. Herein, facile synthesis of copper phosphide nanoparticles (Cu3P NPs) with size ranging from 30 to 80 nm was carried out by using solvothermal process. Variety of characterization techniques like FTIR, XRD, Raman spectroscopy, dynamic light scattering and SEM–EDX, verified the successful synthesis of Cu3P NPs with spherical morphology. Three-electrode system containing glassy carbon, platinum mesh and Hg/HgO as working, counter and reference electrode, respectively, was used for the electrochemical characterization. Electrochemical studies, i.e., CV, LSV and chronoamperometric analysis, revealed efficiency and stability of electrocatalyst for electrolysis of water including hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). Briefly, the Cu3P NPs exhibited an excellent OER activity, achieving the current density of 10 mA cm−2 with an overpotential of 450 mV. Tafel slope value 63 mV dec−1 suggested fast OER reaction kinetics. The Cu3P catalyst also exhibited significant HER activity, approaching a current density of 10 mA cm−2 with an overpotential of 447 mV. Fast HER reaction kinetics was observed with a Tafel slope value of 132 mV dec−1. Moreover, the chronoamperometric studies revealed the stability of electrocatalyst providing favorable conditions for sustainable, long-term oxygen and hydrogen production.

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来源期刊
Arabian Journal for Science and Engineering
Arabian Journal for Science and Engineering 综合性期刊-综合性期刊
CiteScore
5.20
自引率
3.40%
发文量
0
审稿时长
4.3 months
期刊介绍: King Fahd University of Petroleum & Minerals (KFUPM) partnered with Springer to publish the Arabian Journal for Science and Engineering (AJSE). AJSE, which has been published by KFUPM since 1975, is a recognized national, regional and international journal that provides a great opportunity for the dissemination of research advances from the Kingdom of Saudi Arabia, MENA and the world.
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