Edge‐Site‐Rich Ordered Macroporous BiOCl Triggers CO Activation for Efficient CO<sub>2</sub> Photoreduction
Gaopeng Liu, Bin Wang, Xingwang Zhu, Penghui Ding, Junze Zhao, Huaming Li, Ziran Chen, Wenshuai Zhu, Jiexiang Xia
Abstract
Abstract Endowing a semiconductor with tunable edge active sites will effectively enhance catalytic performance. Herein, an edge‐site‐rich ordered macroporous BiOCl (BiOCl‐P) with abundant dangling bonds is constructed via the colloidal crystal template method. The edge‐site‐rich ordered macroporous structure provides abundant adsorption sites for CO 2 molecules, as well as forms numerous localized electron enrichment areas, accelerating charge transfer. DFT calculations reveal that the dangling bonds‐rich configuration can effectively reduce the CO 2 activation energy barrier, boost the CO double bond dissociation, and facilitate the proton electron coupling reaction. As a result, the BiOCl‐P achieves a higher CO and CH 4 generation rate of 78.07 and 3.03 µmol g −1 under 4 h Xe lamp irradiation in a solid–gas system. Finally, the CO 2 molecules′ conversion process is further investigated by in situ Fourier‐transform infrared spectroscopy. This work realizes a new avenue toward the design of vibrant semiconductors on the nanoscale to boost inert CO 2 photoreduction.