Tunable Photocatalytic Two-Electron Shuttle between Paired Redox Sites on Halide Perovskite Nanocrystals
作者:Yonglong Li、Teng Wang、Ying Wang、Zhijie Deng、Li Zhang、Aonan Zhu、Yanmin Huang、Cancan Zhang、Mingjian Yuan、Wei Xie
DOI:10.1021/acscatal.2c01044
日期:——
surface, efficient utilization of these nonequilibrium and shambolic energetic carriers to trigger a chemical reaction remains a hot and challenging subject. Here, we report a photon-mediated electron shuttle between paired redox sites on perovskite nanocrystals for the reformation of highly stable carbon–halogen bonds, where both surface electrons and holes are utilized simultaneously. The photo-redox
钙钛矿半导体作为先进的太阳能转换材料是用于光氧化还原有机合成的有前途的催化剂。尽管钙钛矿表面产生了高浓度的电荷载流子,但有效利用这些非平衡和杂乱的高能载流子来触发化学反应仍然是一个热门且具有挑战性的课题。在这里,我们报告了钙钛矿纳米晶体上成对氧化还原位点之间的光子介导电子穿梭,用于重新形成高度稳定的碳-卤素键,同时利用表面电子和空穴。通过精确控制表面还原/氧化反应速率,可以毫不费力地调整光氧化还原级联反应,从而解锁各种(杂)芳烃的转化。