Construction of Spinel/Perovskite Heterojunction for Boosting Photocatalytic Performance for Polyacrylamide

oleh: Qinghan Zhu, Yuxue Luo, Ke Yang, Guangbo Che, Haiwang Wang, Jian Qi

Format: Article
Diterbitkan: MDPI AG 2023-11-01

Deskripsi

The use of photocatalytic technology to degrade polyacrylamide in crude oil extraction wastewater is a promising approach, but there have been few reports so far. In this study, ZnFe<sub>2</sub>O<sub>4</sub>/Ba<sub>0.7</sub>Sr<sub>0.3</sub>TiO<sub>3</sub> heterogeneous composite materials of a spinel/perovskite type with different proportions were synthesized. The composite materials with 31% ZnFe<sub>2</sub>O<sub>4</sub> content exhibited a maximum polyacrylamide degradation efficiency of 46.54%, which demonstrated the unique role of the spinel/perovskite heterogeneous structure. When Ag nanoparticles were grown in situ on the surface of ZnFe<sub>2</sub>O<sub>4</sub>/Ba<sub>0.7</sub>Sr<sub>0.3</sub>TiO<sub>3</sub>, the photocatalytic degradation efficiency reached 81.28%. The main reason was that the introduction of Ag nanoparticles not only increased the active sites and enhanced light absorption capacity but also accelerated the separation of photo-generated charges. This work provides new ideas for the construction of spinel/perovskite heterogeneous composite materials and has reference significance for the application of photocatalytic degradation in the treatment of wastewater-containing polymers.