Journal
JOURNAL OF SOLID STATE CHEMISTRY
Volume 315, Issue -, Pages -Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2022.123468
Keywords
Red phosphorus; Bi2MoO6; Heterojunction; DFT calculations
Funding
- National Natural Science Foundation of China [52063028, 22064016]
- College Students Innovative Entrepreneurial Training [S202210762003, X202210762017, X202210762123]
- Natural Science Foundation of Xinjiang Uygur Autonomous Region of China [2019D01B36, 2019D01A69]
- Ph.D. Startup Fund of Xinjiang Normal University [XJNUBS1907]
- Innovation team for monitoring of emerging contaminants and biomarkers [2021D14017]
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Highly efficient visible-light-driven Bi2MoO6/HRP heterojunctions exhibited excellent photocatalytic performance for Cr(VI) reduction and E.coli inactivation, showing potential applications in water treatment.
Highly efficient visible-light-driven photocatalysts for removing diverse pollutants have become major topics of interest in wastewater treatment. In this study, the Bi2MoO6/HRP heterojunctions were designed by hydrothermal treatment using Bi2MoO6 and hydrothermally treated red phosphorus (HRP). The resulting 5%Bi2MoO6/HRP (with 5% mass fraction of Bi2MoO6) composite exhibited excellent photocatalytic performance for Cr(VI) reduction and Escherichia coli (E. coli) inactivation. The Cr(VI) photoreduction rate constant was 0.168 min-1, and the E.coli colony counts of 2.84 x 108 CFU mL-1 was decreased to 1.6 x107 CFU mL-1 after 30 min of visible light irradiation. Mechanistic investigation further revealed that photocatalytic performance was enhanced by the tight heterojunction between Bi2MoO6 and the HRP, thereby effectively promoting carrier transfer, and reducing the charge-carrier transfer resistance of composite catalyst. Meanwhile, cycling experiments presented outstanding photostability. This study exhibited that the highly efficient and stable 5%Bi2MoO6/HRP composite was potentially effective in treating toxic heavy metals and pathogenic bacteria for water treatment.
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