Guanyang Zeng, Xingqiang Liu, Liangqiao Wu, Zijie Meng, Debin Zeng*, Changlin Yu*
Chin. J. Struct. Chem., 2024, 43: 100462. DOI: 10.1016/j.cjsc.2024.100462
December 15, 2024
Bi2O2CO3 nano-sheet; I- doping; Ion exchange; Band gap energy; Photocatalytic performance
ABSTRACT
Here, we developed a novel visible-light-driven I- doped Bi2O2CO3 nano-sheet photocatalyst fabricated via a facile ion exchange route at room temperature. This obtained Bi2O2CO3 nano-sheets with I- doping showed several advantages. The specific surface area of I0.875-Bi2O2CO3 was 2.16 times higher than that of Bi2O2CO3, providing more catalytic site for degradation reactions. Moreover, a 3.2 times photocurrent enhancement was observed in I0.875-Bi2O2CO3 comparing with Bi2O2CO3, producing more photogenerated electron-hole pairs for degradation reactions. The synergistic effect between texture property and photoelectric effect boosted the removal of organic pollutants. Under visible light illumination, I0.875-Bi2O2CO3 displayed superior photocatalytic performance for degradation of methyl orange and phenol. Notably, a phenol degradation rate of 88% was achieved over I0.875-Bi2O2CO3 with illuminating for 60 min, which was about 29 times higher than Bi2O2CO3. This finding may provide an opportunity to develop a promising I- doped catalyst for organic pollutants removal.