期刊
CERAMICS INTERNATIONAL
卷 47, 期 9, 页码 12667-12679出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2021.01.127
关键词
Cu; Ag-molybdate; Photocatalytic performance; Antibacterial mechanism
资金
- National Key Research and Development Program of China [2017YFC0210303]
- Analysis and Test Fund of Kunming University of Science and Technology [2019M20182208050]
The study systematically investigated the correlation between crystal structure, morphology, photocatalytic activity, and stability of Cu3Mo2O9 and Ag2MoO4, as well as their antimicrobial properties against Escherichia coli. The results demonstrated superior antibacterial performance and excellent photocatalytic activity of the prepared Cu3Mo2O9 and Ag2MoO4.
Mo-containing semiconductors have attracted significant attention because of their unique photosensitivity, rendering superior visible-light photocatalytic activity. The current study utilizes a combination of theoretical and experimental approaches to systematically investigate the correlation between crystal structure, morphology, photocatalytic activity and stability of rod-shaped copper molybdate (Cu3Mo2O9) and layered silver molybdate nanomaterials (Ag2MoO4). At the same time, Escherichia coli (E. coli) is used, as a model gramnegative bacterium, to demonstrate antimicrobial properties of Cu3Mo2O9 and Ag2MoO4. The results reveal that as-prepared Cu3Mo2O9 and Ag2MoO4 exhibit superior antibacterial performance and excellent photocatalytic activity. Finally, the antibacterial mechanism is proposed based on experimental results, revealing that the sterilization is achieved by ion sterilization and formation of a certain amount of ROS and medium acidification. The present work enhances our understanding of the Cu/Ag-molybdate antibacterial mechanism and demonstrates the feasibility of constructing Mo-containing photocatalysts with high photocatalytic and antimicrobial activities.
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