在石墨结合有机酸中进行界面驱动的质子合电子转移
Robert E Warburton1, Phillips Hutchison1, Megan N Jackson2
1Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States.
Journal of the American Chemical Society
|November 24, 2020
概括
在石墨结合催化剂 (GCC) 中的质子结合电子转移 (PCET) 是由界面场驱动的. 有机酸位点和石墨之间的连续结合对于高效的PCET至关重要,指导未来的催化剂设计.
科学领域:
- 表面化学
- 电化学
- 计算材料科学
背景情况:
- 交界质子合电子转移 (PCET) 反应对于能量转换技术至关重要.
- 在碳表面的介面PCET的分子水平理解是有限的.
- 有机酸功能组的石墨结合催化剂 (GCC) 提供了界面PCET的设计部位.
研究的目的:
- 计算和分析GCC有机酸的界面静电电位和电场.
- 在GCC中研究控制质子合氧化还原潜力的因素.
- 阐明结合和电子合在接口PCET中的作用.
主要方法:
- 界面静电电位和电场的计算建模.
- 对GCCs的质子合氧化还原潜力的计算.
- 理论结果与循环电压测量结果的比较.
主要成果:
- 对GCC计算的氧化还原电位与实验周期电压测量数据一致.
- 氧化还原潜力的趋势与分子酸度和石墨结合相关.
- 在GCC酸中中断的结合解释了PCET峰值的缺失.
结论:
- 连续合和强大的电子合对于GCC酸位的接口场驱动PCET至关重要.
- 了解表面原子结构与静电电位关系可以指导异质催化剂设计.
- 这项研究为界面PCET机制提供了关键的分子层面见解.
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