Mg and Cr doped ZnO nanoparticles for oxygen evaluation reaction

IF 5.7 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Surfaces and Interfaces Pub Date : 2024-11-19 DOI:10.1016/j.surfin.2024.105437

Bodicherla Naresh , T.V.M. Sreekanth , Kumcham Prasad , Kisoo Yoo , Jonghoon Kim

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引用次数: 0

Abstract

This study introduces an innovative approach to developing low-cost materials for renewable energy technologies by synthesizing a novel series of zinc oxide (ZnO)-based nanoparticles, including chromium-doped zinc oxide (ZnOCr) and magnesium-chromium co-doped zinc oxide (ZnOCr-Mg), via the solution combustion method. The novelty of this work lies in the strategic co-doping of ZnO with both Cr and Mg, a combination not extensively explored in the field of electrocatalysis for Oxygen Evolution Reactions (OER). By leveraging this co-doping strategy, the structural, morphological, and electrocatalytic properties of the nanoparticles were systematically analyzed using techniques such as linear sweep voltammetry (LSV), cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and chronoamperometry (CA). Among the tested variants, ZnOCr-Mg:5 exhibited a significantly lower overpotential and superior stability, maintaining its catalytic performance over 18,000 s, thus outperforming traditional ZnO catalysts. These findings highlight the synergistic effects of Cr and Mg doping, showcasing ZnOCr-Mg:5 as a highly efficient and durable catalyst for OER, offering a novel and scalable solution for advancing sustainable energy technologies.

Abstract Image

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用于氧评价反应的掺镁和掺铬氧化锌纳米粒子

本研究通过溶液燃烧法合成了一系列基于氧化锌（ZnO）的新型纳米粒子，包括掺铬氧化锌（ZnOCr）和镁铬共掺氧化锌（ZnOCr-Mg），从而为开发用于可再生能源技术的低成本材料引入了一种创新方法。这项工作的新颖之处在于战略性地在氧化锌中同时掺杂铬和镁，而在氧进化反应（OER）的电催化领域，这种掺杂组合尚未得到广泛探索。利用这种共掺杂策略，我们采用线性扫描伏安法（LSV）、循环伏安法（CV）、电化学阻抗光谱法（EIS）和时变分析法（CA）等技术对纳米颗粒的结构、形态和电催化特性进行了系统分析。在测试的变体中，ZnOCr-Mg:5 的过电位明显较低，而且稳定性极佳，能在 18,000 秒内保持催化性能，因此优于传统的氧化锌催化剂。这些发现凸显了铬和镁掺杂的协同效应，表明 ZnOCr-Mg:5 是一种高效、持久的 OER 催化剂，为推进可持续能源技术提供了一种新颖、可扩展的解决方案。

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来源期刊

Surfaces and Interfaces Chemistry-General Chemistry

CiteScore

8.50

自引率

6.50%

发文量

753

审稿时长

35 days

期刊介绍： The aim of the journal is to provide a respectful outlet for ''sound science'' papers in all research areas on surfaces and interfaces. We define sound science papers as papers that describe new and well-executed research, but that do not necessarily provide brand new insights or are merely a description of research results. Surfaces and Interfaces publishes research papers in all fields of surface science which may not always find the right home on first submission to our Elsevier sister journals (Applied Surface, Surface and Coatings Technology, Thin Solid Films)