在存在铁铜 (水) 氧化物时的水氧化
Mohammad Saleh Ali Akbari1, Subhajit Nandy2, Pavlo Aleshkevych3
1Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran.
Inorganic chemistry
|December 23, 2024
概括
将铁 (Fe) 离子纳入CuO表面显著提高了性介质中的氧演化反应 (OER) 性能. 与内部集成的Fe ion相比,CuO催化剂中的表面结合的Fe ion增强了OER活性.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 催化剂是一种催化剂.
背景情况:
- 氧化演化反应 (OER) 对能量转化技术至关重要.
- 在性介质中开发高效和稳定的OER催化剂仍然是一个挑战.
- 基于氧化铜 (CuO) 的材料正在为OER应用进行探索.
研究的目的:
- 研究铁 (Fe) 离子融入对CuO基材料OER性能的影响.
- 为了比较CuO的OER活性与表面附着的Fe离子与集成到CuO网格中的Fe离子.
- 为了阐明铁离子分布在CuO结构中的作用.
主要方法:
- 合成两个不同的CuO变体:表面结合的Fe离子 (化合物1) 和网格集成的Fe离子 (化合物2).
- 电化学表征包括多步安培测量,Tafel图形分析和循环电压测量.
- 基于电极组合和时光度测量数据计算周转频率 (TOFs).
主要成果:
- 化合物1 (表面结合的Fe) 与化合物2 (格子集成的Fe) 相比,显著提高了OER性能.
- 表的斜率表明,与纯CuO和FeO (OH) 不同的化合物1和2的OER机制类似.
- FeO(OH) 呈现出最高的活性,而化合物1与化合物2相比显示出优越的Fe离子TOF.
结论:
- CuO 结构上的表面结合的 Fe 离子在性介质中的 OER 催化中比晶格集成的 Fe 离子更有效.
- 铁离子的分布在确定OER活动和机制方面起着至关重要的作用.
- 结果为OER设计先进的电催化材料提供了洞察力.
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