期刊
ACS APPLIED MATERIALS & INTERFACES
卷 14, 期 17, 页码 19938-19948出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.1c23960
关键词
disinfection; hydrogen generation; adsorption; bipolar photocatalysis; hydrogen peroxide
资金
- China Scholarship Council (CSC) [20180935006, 201906870022]
In this study, graphitic carbon nitride (g-C3N4) was embedded into a polymer host to create recoverable photocatalysts with enhanced hydrogen peroxide production.
Graphitic carbon nitride (g-C3N4) is known to photogenerate hydrogen peroxide in the presence of hole quenchers in aqueous environments. Here, the g-C3N4 photocatalyst is embedded into a host polymer of intrinsic microporosity (PIM-1) to provide recoverable heterogenized photocatalysts without loss of activity. Different types of g-C3N4 (including Pt@g-C3N4, Pd@gC3N4, and Au@g-C3N4) and different quenchers are investigated. Exploratory experiments yield data that suggest binding of the quencher either (i) directly by adsorption onto the g-C3N4 (as shown for alpha-glucose) or (ii) indirectly by absorption into the microporous polymer host environment (as shown for Triton X-100) enhances the overall photochemical H2O2 production process. The amphiphilic molecule Triton X-100 is shown to interact only weakly with g-C3N4 but strongly with PIM-1, resulting in accumulation and enhanced H2O2 production due to the microporous polymer host.
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