期刊
RENEWABLE ENERGY
卷 138, 期 -, 页码 474-488出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.renene.2019.01.113
关键词
Up-conversion luminescence agent (Er3+:Y3Al5O12); Z-scheme photocatalyst (NiGa2O4-WO3); Multi-walled carbon nanotubes (MWCNTs); Simulated solar-light irradiation; Photocatalytic degradation simultaneous hydrogen evolution
资金
- National Science Foundation of China [21371084]
- Key Laboratory Basic Research Foundation of Liaoning Provincial Education Department [L2015043]
- Liao ning Provincial Department of Education Innovation Team Projects [LT2015012]
- innovative Team Project of Eduction Department of Liaoning Province of China (LT2018)
- Key Laboratory Project of Shenyang Municipal Science and Technology Plan (2019) of China
Three new visible-light-induced Z-scheme photocatalytic systems, Er3+:Y3Al5O12@NiGa2O4-WO3, Er3+:Y3Al5O12@NiGa2O4-MWCNTs (10-20 nm)-WO3 and Er3+:Y3Al5O12@NiGa2O4 -MWCNTs (40-60 nm)WO3, are successfully prepared via hydrothermal method. The prepared photocatalysts are characterized by X-ray diffractometer (XRD), energy dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fouriertransform infrared (FT-IR) and photoluminescence (PL) spectra. UV-vis absorption and PL spectra were also determined to explore luminescence effect of the Er3+:Y3Al5O12. The photocatalytic activities of prepared photocatalysts are evaluated and compared under simulated solar-light irradiation in degradation of organic pollutant with simultaneous hydrogen evolution. The influence factors such as simulated solar-light irradiation time and photocatalyst amount on the photocatalytic activities of prepared photocatalysts are investigated. The results show that the Er3+:Y3Al5O12@NiGa2O4-MWCNTs (40 -60 nm)-WO3 is the best one of three prepared photocatalysts in the degradation of methylene blue with simultaneous hydrogen evolution under simulated solar-light irradiation. In addition, the Er3+:Y3Al5O12@NiGa2O4-MWCNTs (40-60 nm)-WO3 also displays high performance in five repeated experiments. At last, the process of photocatalytic degradation of organic pollutant with simultaneous hydrogen evolution caused by Er3+:Y3Al5O12@NiGa2O4-MWCNTs (40-60 nm)-WO3 is proposed. (C) 2019 Elsevier Ltd. All rights reserved.
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