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A platform for research: civil engineering, architecture and urbanism
Facile fabrication of the Ag nanoparticles decorated graphitic carbon nitride photocatalyst film for indoor air purification under visible light
Abstract Visible light photocatalysis represents a promising procedure for indoor air purification. Here we developed the Ag nanoparticles decorated graphitic carbon nitride photocatalyst film supported on glass substrate. This photocatalyst film can effectively use visible light to degrade various volatile organic compounds which contain formaldehyde, acetaldehyde, ethylene, benzene, toluene, and p-xylene and deactivate Escherichia coli, Staphylococcus aureus, and Candida albicans. The decoration of Ag nanoparticles enhanced the visible-light-driven activity of graphitic carbon nitride because Ag nanoparticles strongly absorb visible light through the localized surface plasmon resonance effect and facilitate the efficient separation of charge carriers by forming Schottky barrier with the semiconductor. Photo-generated holes and superoxide radical anions, rather than hydroxyl radicals, are the major active species in the photocatalytic degradation of volatile organic compounds and deactivation of microorganisms. The application potential of the developed photocatalyst film for indoor air purification was demonstrated by the efficient removal of HCHO and TVOC under a simulated indoor environment and the favorable recyclability of the photocatalyst.
Graphical abstract Display Omitted
Highlights Ag/g-C3N4 photocatalyst film effectively degrade VOCs under visible light. Ag/g-C3N4 photocatalyst film effectively deactivate microbe under visible light. Ag/g-C3N4 photocatalyst film preserved its activity in ten successive cycles. Ag NPs absorb visible light by LSPR and enhance the charge separation of g-C3N4. Photo-generated holes and superoxide radical anions were the major active species.
Facile fabrication of the Ag nanoparticles decorated graphitic carbon nitride photocatalyst film for indoor air purification under visible light
Abstract Visible light photocatalysis represents a promising procedure for indoor air purification. Here we developed the Ag nanoparticles decorated graphitic carbon nitride photocatalyst film supported on glass substrate. This photocatalyst film can effectively use visible light to degrade various volatile organic compounds which contain formaldehyde, acetaldehyde, ethylene, benzene, toluene, and p-xylene and deactivate Escherichia coli, Staphylococcus aureus, and Candida albicans. The decoration of Ag nanoparticles enhanced the visible-light-driven activity of graphitic carbon nitride because Ag nanoparticles strongly absorb visible light through the localized surface plasmon resonance effect and facilitate the efficient separation of charge carriers by forming Schottky barrier with the semiconductor. Photo-generated holes and superoxide radical anions, rather than hydroxyl radicals, are the major active species in the photocatalytic degradation of volatile organic compounds and deactivation of microorganisms. The application potential of the developed photocatalyst film for indoor air purification was demonstrated by the efficient removal of HCHO and TVOC under a simulated indoor environment and the favorable recyclability of the photocatalyst.
Graphical abstract Display Omitted
Highlights Ag/g-C3N4 photocatalyst film effectively degrade VOCs under visible light. Ag/g-C3N4 photocatalyst film effectively deactivate microbe under visible light. Ag/g-C3N4 photocatalyst film preserved its activity in ten successive cycles. Ag NPs absorb visible light by LSPR and enhance the charge separation of g-C3N4. Photo-generated holes and superoxide radical anions were the major active species.
Facile fabrication of the Ag nanoparticles decorated graphitic carbon nitride photocatalyst film for indoor air purification under visible light
Wang, Fengping (author) / Li, Wei (author) / Zhang, Wanming (author) / Ye, Ranran (author) / Tan, Xiaohong (author)
Building and Environment ; 222
2022-07-12
Article (Journal)
Electronic Resource
English
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Visible-light-driven dynamic cancer therapy and imaging using graphitic carbon nitride nanoparticles
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Visible-light-driven dynamic cancer therapy and imaging using graphitic carbon nitride nanoparticles
| British Library Online Contents | 2018