Efficient photodegradation of tetracycline using flower-like g-C<sub>3</sub>N<sub>4</sub>@NiO heterostructure catalysts
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내용
Nickel Oxide (NiO), as a typical p-type semiconductor, effectively mitigates the recombination of photogenerated electrons and holes at the interface with n-type semiconductors. As a result, NiO is a suitable catalyst for the formation of a graphitic carbon nitride (g-C3N4) heterojunction for the enhancement of the oxidation of organic pollutants. In this study, we synthesized a flower-like g-C3N4/NiO catalyst by combining g-C3N4 and NiO semiconductors to significantly enhance the photocatalytic performance. The surface porous structure was designed to increase the exposed surface area, thereby promoting pollutant adsorption and providing more active sites for pollutant decomposition. The resulting flower-like g-C3N4/NiO photocatalyst exhibited a flower-like structure with an expanded surface area and generated an electric field at the interface between g-C3N4 and NiO. This structure feature effectively attenuated the recombination of photogenerated electrons and holes.