Enhancement of acid treated g-C3N4-Cu2O photocatalytic activity by PEG under visible light irradiation
Shiyu Zuo, Haiming Xu, Wei Liao, Lei Sun, Qiang Li, Jie Zan, Binyang Zhang, Dongya Li, Dongsheng Xia
Index: 10.1016/j.cplett.2018.03.072
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Abstract
In this study, g-C3N4-Cu2O was successfully synthesized in the presence of PEG-400 surfactant via an acid treatment hydrothermal method and a high-temperature calcination method. The structures and properties of as-synthesized samples were characterized using a range of techniques, such as XPS, TEM, PL and BET. The g-C3N4-Cu2O heterojunction exhibits the enhanced photocatalytic performance and high stability. It is revealed that the addition of PEG can promote the heterojunction effect of g-C3N4-Cu2O, effectively improving the crystallinity and specific surface area of the photocatalyst, separation efficiency of photocarriers, and light absorption, thus enhancing the photocatalytic performance.