Efficient Photocatalytic CO<sub>2</sub> Reformation of Methane on Ru/La‐g‐C<sub>3</sub>N<sub>4</sub> by Promoting Charge Transfer and CO<sub>2</sub> Activation**
Naixu Li, Xianhe Li, Rui Pan, Miao Cheng, Jie Guan, Jiancheng Zhou, Maochang Liu, Junwang Tang, Dengwei Jing
Abstract
Abstract Artificial photosynthesis, in which solar energy drives CO 2 to produce hydrocarbon fuels, is considered an effective way to solve the increasingly serious energy crisis and mitigate the greenhouse effect. Herein, layered porous Ru‐loaded and La‐doped g‐C 3 N 4 nanosheets (Ru‐LGCNs) were prepared by one‐step calcination, followed by in situ photoreduction deposition of Ru. The layered Ru‐LGCN showed excellent photocatalytic CO 2 reformation of methane performance under visible light, and the generation rates of CO, CH 3 CH 3 , CH 3 OH and CH 3 CH(OH)CH 3 were 133, 154, 251 and 133 μmol h −1 g −1 , respectively. The reason for the enhanced photocatalytic activity of Ru‐LGCN is the synergistic effect of bimetallic Ru and La. It is worth noting that the doped La can provide a good channel for charge transfer between LGCNs and CO 2 . This change in the charge behavior of the transport path is beneficial to break the C=O bonds on the active site La and generate methyl radicals on Ru, resulting in the generation of C2+ hydrocarbons.