利用类似于NADPH的化物转移氧化循环与化嵌入的氧化用于电催化演化反应
Pirudhan Karak1, Sanajit Kumar Mandal1, Joyanta Choudhury1
1Organometallics & Smart Materials Laboratory, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, Madhya Pradesh 462 066, India.
Journal of the American Chemical Society
|July 27, 2023
概括
一种新型的NADP+类有机催化剂通过使用温和酸的电化学演化反应 (HER) 有效地产生. 这一突破为清洁能源生产提供了可持续的途径,
科学领域:
- 电化学
- 催化剂
- 可持续能源
背景情况:
- 有效和可持续的催化剂对于清洁能源的产生至关重要,特别是对于电化学演化反应 (HER).
- 虽然过渡金属复合物和有机聚合物已被探索,但对HER催化剂的氧化还原活性小有机分子仍未得到充分探索.
- 有机电催化剂面临的挑战包括需要强酸性溶液,高过电位和在酸性条件下的稳定性.
研究的目的:
- 开发和研究一种新的NADP+类有机系统,作为进化反应 (HER) 的催化剂.
- 通过使用温和的酸性和中等的过量的电催化剂来克服现有的有机电催化剂的局限.
- 探索 bis-imidazolium-fused heterohelicenes 在 HER 催化中的潜力.
主要方法:
- 作为HER的一种NADP+类有机催化剂的bis-imidazolium-fused heterohelicene的证明.
- 使用酸作为温和的质子源,
- 实验和计算机制研究以阐明催化循环.
主要成果:
- 开发的有机催化剂达到了85±5%的法拉达效率和50±3的周转率.
- 观察到最大转换频率 (TOFmax) 为410s-1,显著超过现有的NADP+类有机化合物.
- 催化剂有效地利用了NADP+/NADPH类型的化物转移氧化还原循环与温和的酸.
结论:
- 使用温和的质子源,二-伊米达融合的作为一种有效的有机电催化剂.
- NADP+/NADPH类型的化物转移机制是催化剂性能的关键.
- 这项工作为设计可持续生产的先进有机电催化剂提供了有希望的策略.
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