期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 641, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.colsurfa.2022.128603
关键词
S-scheme heterojunction; Photocatalyst; Antibacterial activity; Dye degradation; Electrospinning; Ag2CrO4/ZnFe2O4
资金
- National Key Research and Development Program of China [2019YFC1605901]
- Science and Technology Program of Liaoning Provincial Education Department [J2020049]
- Liaoning Province's Program for Promoting Liaoning Talents [XLYC1808034]
This study successfully prepared S-scheme ACO/ZFO nanofibers heterojunction photocatalyst, which has higher specific surface area and more exposed active sites. The successful construction of S-scheme heterojunction effectively inhibits the recombination of photoelectron-hole pairs and generates more active groups, showing superior redox ability. The ACO/ZFO composites exhibit excellent photocatalytic performance under the enhancement of multiple properties.
The combination of multiple optimization methods has become one of the hot strategies for the development of novel photocatalysts. Therefore, in this paper, the S-scheme Ag2CrO4/ZnFe2O4 (ACO/ZFO) nanofibers heterojunction photocatalyst is successfully prepared by co-precipitation method by loading ACO particles on the surface of ZFO nanofibers. It is found that ACO/ZFO composites not only have the advantages of higher specific surface area and more exposed active sites, but also the successful construction of S-scheme heterojunction effectively inhibits the recombination of photoelectron-hole pairs and generates more active groups, showing its superior redox ability. ACO/ZFO composites have excellent photocatalytic performance under the enhancement of multiple properties. The results showed that under the simulated visible light, the 40%ACO/ZFO composite with the best photocatalytic activity has the highest sterilization rate of 98.7%, which is 2.1 times and 3.3 times of ACO and ZFO, respectively, and the degradation rate of MB is 3.1 times and 4.7 times of ACO and ZFO, respectively. The mechanism of S-scheme ACO/ZFO nanofibers heterojunction photocatalyst was investigated by free radical experiment. This work provides new insights into the design and development of S-scheme heterojunctions for environmental remediation and sterilization.
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