Ma Junjie, Xiao Yingguan, Chen Juanrong, Shen Yue, Xiao Sisi, Cao Shunsheng
School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China.
School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China; School of Safety Management, GuangXi Vocational College of Safety Engineering, Nanning 530100, China.
J Colloid Interface Sci. 2025 Jan 15;678(Pt A):334-344. doi: 10.1016/j.jcis.2024.08.162. Epub 2024 Aug 20.
Exploring high-performance photocatalysts still remains a big challenge due to poor charge separation efficiency. Herein, we prepare a novel anatase/rutile TiO-AgPO hollow photocatalyst (A/R-TiO-AgPO) for addressing this challenge. Microstructural characterization and photoelectric measurements confirm that the synergy of hollow structure and dual-heterojunction can provide abundant active sites and boost efficient charge separation through dual-pathway charge transfer mechanism. The A/R-TiO-AgPO photocatalyst exhibits the highest photocurrent density (15.25 µA cm), which is 8.4 and 5.2 times than that of A-TiO-AgPO (1.82 µA cm) and P25-AgPO (2.93 µA cm), respectively. Photo-degradation experiment shows that A/R-TiO-AgPO presents a high degradation percentage (98.7 %) of thiamethoxam (THX) within 30 min, which is 1.45 and 1.23 times than that of A-TiO-AgPO (68.1 %) and P25-AgPO (80.7 %), respectively. Furthermore, the degradation percentage of THX by A/R-TiO-AgPO is as high as 96.4 % after seven successive cycles, indicating excellent cycling stability. Therefore, this work provides a new insight into exploring other high-performance photocatalysts by combining hollow structure and dual-heterojunction.
