0D/1D Au Modified Oxygen Vacancy‐Rich Ni
2
P
2
O
7
for Highly‐Efficient CO
Mingke Zhang, Baoyan Sun, Yongsheng Hu, Qiong Wu, Maobin Wei, Xin Li, Bin Zuo, Huilian Liu
ABSTRACT
Effective capture of CO 2 molecules and facilitation of efficient separation of photogenerated carriers are key factors in the CO 2 photoreduction reaction (CO 2 PR). Consequently, it is vital to strengthen the adsorption and activation performance of CO 2 molecules and offer sufficient photogenerated charge carriers. In this study, the low‐crystalline porous Ni 2 P 2 O 7 /Au composite catalysts (3‐AN) were prepared, and their catalytic performance and reaction mechanism in the CO 2 PR were investigated. Photocatalytic experiments under ultraviolet‐visible light irradiation showed that at the optimal Au loading ratio, the CO and CH 4 yields of the 3‐AN catalyst were about 110.11 and 15.26 µmol g −1 h −1 , respectively, which are about 10.9 and 13.6 times higher than those of the pure Ni 2 P 2 O 7 catalyst. XPS, SEM, TEM, and other characterization results confirmed the successful introduction of Au. KPFM and in situ FTIR revealed that the synergistic effect of oxygen vacancies and the LSPR effect of Au nanoparticles promoted the separation and transmission of photogenerated carriers, thus improving the CO 2 reduction efficiency. This study provides new ideas and a theoretical basis for the application of the LSPR‐enhanced composite catalysts in the field of CO 2 PR.