一个均质的复合体介于中性水中的电气和光催化O2/H2O相互转换
Abhishek Saini1, Chandan Das1, Surabhi Rai1,2
1Chemistry Department, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
iScience
|November 3, 2023
概括
这项研究提出了一种 - 希斯提丁复合物,该复合物在中性水中作为氧降解 (ORR) 和氧演化 (OER) 的双功能催化剂,表现出显著的电气和光催化活性.
科学领域:
- 电化学 电化学 电化学
- 转换可再生能源 转换可再生能源
- 催化剂是一种催化剂.
背景情况:
- 氧/水氧化还原对是可再生能源技术的核心.
- 在中性水中开发高效的氧降解 (ORR) 和氧演化 (OER) 催化剂至关重要.
- -胺复合体模仿携带氧气的金属蛋白.
研究的目的:
- 在中性水中研究Co(L-histidine) 2对双向ORR和OER的电化学行为.
- 探索其作为电催化剂和光催化剂的潜力.
主要方法:
- 对Co ((L-histidine) 的电化学分析2.
- 对ORR (2电子和4电子) 和OER的反应途径的研究.
- 使用Eosin-Y作为光敏感剂和特定的氧化还原介质的光催化研究.
主要成果:
- Co(L-histidine) 2复合物有效地催化了2电子ORR (250s−1) 和4电子ORR (66s−1),由一个跨μ-1,2-Co(III) -peroxo中间体促进.
- 它还通过一个Co(IV) -oxo物种有效催化OER (15606 s-1).
- 该综合体在中性水中表现出明显的电气和光催化ORR/OER活动.
结论:
- Co ((L-histidine) 2 是一个高度活跃的ORR和OER在中性水中的双功能催化剂.
- 这项工作展示了一个早期的催化剂示例,在中性条件下具有电气和光催化双向ORR/OER能力.
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