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• W4308309077 endingPage "167819" @default.
• W4308309077 startingPage "167819" @default.
• W4308309077 abstract "An increasing amount of nitric oxide (NO x ) is being discharged into the atmosphere due to the development of industry and combustion of fossil fuels. Photocatalysis, as a green and renewable technology, has attracted increasing attention from global researchers to address environmental pollution caused by excessive NO x in air. g-C 3 N 4 is a metal-free organic polymer photocatalyst that has received widespread attention due to its unique physical and chemical properties. However, the photocatalytic activity of g-C 3 N 4 under visible light irradiation is limited by high photocarrier recombination, poor conductivity, and low visible light utilization. The construction of novel S-scheme heterojunction semiconductors based on g-C 3 N 4 is a promising strategy to enhance the photocatalytic activity. In this study, S-scheme CeO 2-x /g-C 3 N 4-x (Ce/CN) photocatalysts were synthesized by the thermal polymerization of melamine and Ce(NO 3 ) 4 . The photocatalytic activity of the as-prepared photocatalysts was investigated for the removal of NO with visible-light irradiation. The photocatalytic efficiency of 4Ce/CN was about 1.7 times higher than that of g-C 3 N 4 with a low NO 2 yield. Material characterization and DFT analysis demonstrated that the enhanced photocatalytic activity was attributed to N and O dual defects, the excellent conductivity of CeO 2 , and the in-built field of the Ce/CN S-scheme heterojunction. • S-scheme heterojunction CeO2-x/g-C3N4-x with dual defects were prepared by thermal polymerization; • The improved photocatalytic performance for removing NO is attributed to dual defective sites and the built-in electric field. • The synergistic effect of defects and heterojunction optimizes interfacial photogenerated charges dynamics and promotes the generation of reactive oxygen species." @default.
• W4308309077 created "2022-11-10" @default.
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• W4308309077 date "2023-02-01" @default.
• W4308309077 modified "2023-10-06" @default.
• W4308309077 title "Construction of S-scheme heterojunction for enhanced photocatalytic conversation of NO over dual-defect CeO2−x/g-C3N4−x" @default.
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• W4308309077 doi "https://doi.org/10.1016/j.jallcom.2022.167819" @default.
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