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- W4213279733 endingPage "134013" @default.
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- W4213279733 abstract "The construction of wide bandgap semiconductors with heterojunctions is an effective strategy to improve the photocatalytic activity of narrow-bandgap semiconductors, such as red phosphorus (RP). The novel step-scheme (S-scheme) heterojunction can separate photocarriers effectively while retaining the high reduction-oxidation capacity of the catalyst. Herein, a SnO2/hydrothermally treated RP (SnO2/HRP) S-scheme heterojunction was constructed and was found to display superior performance in the photocatalytic degradation of pollutants and the disinfection of bacteria. The 5%SnO2/HRP (mass ration of SnO2 with 5 wt%) composite had the strongest photocatalytic activity. It could degrade 97.5% of Rhodamine B (RhB) after 12 min of light exposure. The photodegradation rate constant of this composite reached 2.96 × 10-1 min-1, which was 4.4 and 59.2 times higher than that of pure HRP and SnO2, respectively. Furthermore, this S-scheme heterojunction composite exhibited a higher efficient photocatalytic antibacterial rate (99.4%) for Escherichia coli (E. coli) under visible-light irradiation, than pure HRP (66.4%) and SnO2 (72.9%). Further mechanistic investigations illustrated that the intimate contact between HRP and SnO2 in the S-scheme system heterojunction could effectively boost carrier transfer and improve the photocatalytic activity of the semiconductor. This investigation provided an efficient recyclable S-scheme heterojunction composite for the photocatalytic degradation of pollutants and bacteria." @default.
- W4213279733 created "2022-02-24" @default.
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- W4213279733 date "2022-06-01" @default.
- W4213279733 modified "2023-10-16" @default.
- W4213279733 title "Enhanced photocatalytic and antibacterial activities of S-scheme SnO2/Red phosphorus photocatalyst under visible light" @default.
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- W4213279733 doi "https://doi.org/10.1016/j.chemosphere.2022.134013" @default.
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