Construction and degradation mechanism of the magnetic CoFe1.95Y0.05O4/Ag/g-C3N4 Z-scheme heterojunction for enhanced photocatalytic activity
Year: 2024
Type: article
Abstract: In this study, a Z-scheme heterojunction CoFe 1.95 Y 0.05 O 4 /Ag/g-C 3 N 4 (CFYO/ACN) magnetic nanocomposite was prepared by hydrothermal synthesis . The composite was characterised and analyzed using different characterization tools and its photocatalytic degradation activity towards methylene blue (MB) was investigated. The results showed that the CFYO/ACN photocatalyst compared to CoFe 1.95 Y 0.05 O 4 (CFYO) and Ag/g-C 3 N 4 (ACN), the composite CFYO/ACN had the highest degradation efficiency of MB, which was up to 97 % within 120 min, which was 1.26 and 1.09 times higher than that of ACN and CFYO, respectively. The enhancement of the catalytic performance of CFYO/ACN was attributed to the fact that the heterogeneous junction formation effectively inhibited the complexation of photogenerated carriers. In addition, five consecutive cyclic degradation experiments showed that CFYO/ACN exhibited efficient photocatalytic degradation, stable crystal structure, and easy recycling in the photodegradation process. Finally, the capture experiments confirmed that superoxide radicals ( ⋅ O 2 − ) and hydroxyl radicals (·OH) play a major role in the degradation process. This study provides an effective strategy for the construction of efficient photocatalysts.
Source: Vacuum
Authors: Y. Meng, G.X. zhang, D.W. Chen, M. Xu, Q.W. Liu, F.C. Jiao
Language: English
Field: Energy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $2,990
OpenAlex ID: W4404124158