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Preparation of Silver-Palladium Alloyed Nanoparticles for Plasmonic Catalysis under Visible-Light Illumination
Published on: August 18, 2020
Synthesis of a g-C3N4-Cu2O heterojunction with enhanced visible light photocatalytic activity by PEG
Dongya Li1, Shiyu Zuo2, Haiming Xu3
1School of Environmental Engineering, Wuhan Textile University, Wuhan 430073, PR China; Engineering Research Center Clean Production of Textile Dyeing and Printing, Ministry of Education, 430073, PR China.
Abstract:
A g-C3N4-Cu2O was successfully synthesized in the presence of PEG-400 surfactant via a hydrothermal method and high-temperature calcination method. Based on the results of TEM, XPS, EPR, and other techniques, it was verified that a heterojunction was formed. The synthesized g-C3N4-Cu2O show excellent photocatalytic activity and stability was confirmed through cycling experiments, XRD and XPS. At a suitable addition amount, the value of band gap of g-C3N4-Cu2O is reduced to 1.87 eV, the PL intensity decreases effectively, the specific surface area is increased to 12.8114 m2/g, and the photocatalytic degradation rate is increased to 94%. Adding the surfactant PEG-400 in the precursor solutions leads to a reduction in the crystallite size, which can improve the morphology and specific surface area to form abundant heterojunction interfaces as channels for photo-generated carrier separation, and improve its light utilization and quantum efficiency.
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