Unique Dual‐Sites Boosting Overall CO<sub>2</sub> Photoconversion by Hierarchical Electron Harvesters
Xingwang Zhu, Yitao Cao, Yanhua Song, Jinman Yang, Xiaojie She, Zhao Mo, Yuanbin She, Qing Yu, Xianglin Zhu, Junjie Yuan, Huaming Li, Hui Xu
Abstract
Abstract Low selectivity and poor activity of photocatalytic CO 2 reduction process are usually limiting factors for its applicability. Herein, a hierarchical electron harvesting system is designed on CoNiP hollow nano‐millefeuille (CoNiP NH), which enables the charge enrichment on CoNi dual active sites and selective conversion of CO 2 to CH 4 . The CoNiP serves as an electron harvester and photonic “black hole” accelerating the kinetics for CO 2 ‐catalyzed reactions. Moreover, the dual sites form from highly stable CoONiC intermediates, which thermodynamically not only lower the reaction energy barrier but also transform the reaction pathways, thus enabling the highly selective generation of CH 4 from CO 2 . As an outcome, the CoNiP NH/black phosphorus with dual sites leads to a tremendously improved photocatalytic CH 4 generation with a selectivity of 86.6% and an impressive activity of 38.7 µmol g −1 h −1 .