| Literature DB >> 30015168 |
Dongya Li1, Shiyu Zuo2, Haiming Xu3, Jie Zan2, Lei Sun2, Donghui Han4, Wei Liao2, Binyang Zhang2, Dongsheng Xia5.
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.Entities:
Keywords: Heterogeneous catalysis; Heterojunction; PEG-400; Photocatalysts; g-C(3)N(4)-Cu(2)O
Year: 2018 PMID： 30015168 DOI： 10.1016/j.jcis.2018.07.018
Source DB: PubMed Journal: J Colloid Interface Sci ISSN： 0021-9797 Impact factor: 8.128