Open AccessPhoto-Fenton Process over an Fe-Free 3%-CuO/Sr0.76Ce0.16WO4 Photocatalyst under Simulated Sunlight
Author(s) -
Mingyan Fu,
Jia Yang,
Xiaorui Sun,
Wei Tian,
Guihua Yin,
Tian Sheng,
Mingdan Tan,
Hongfu Liu,
Xiaofeng Xing,
Huisheng Huang
Publication year - 2021
Publication title -
acs omega
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.779
H-Index - 40
ISSN - 2470-1343
DOI - 10.1021/acsomega.1c04107
Subject(s) - photocatalysis , x ray photoelectron spectroscopy , photodegradation , scanning electron microscope , materials science , fourier transform infrared spectroscopy , diffuse reflectance infrared fourier transform , radical , spectroscopy , photochemistry , analytical chemistry (journal) , nuclear chemistry , chemistry , catalysis , chemical engineering , optics , environmental chemistry , physics , organic chemistry , quantum mechanics , engineering , composite material , biochemistry
Photo-Fenton is a promising photocatalytic technology that utilizes sunlight. Herein, an Fe-free 3%-CuO/Sr 0.76 Ce 0.16 WO 4 photocatalyst was synthesized to apply simulated wastewater degradation via a photo-Fenton process under simulated sunlight. The photodegradation efficiency of RhB solution over the 3%-CuO/Sr 0.76 Ce 0.16 WO 4 photocatalyst is 93.2% in the first 3 h; its photocatalytic efficiency remains at 91.6% even after three cycle experiments. The kinetic constant of the 3%-CuO/Sr 0.76 Ce 0.16 WO 4 photocatalyst is 0.0127 min -1 , which is 2.8-fold that of an intrinsic Sr 0.76 Ce 0.16 WO 4 sample. The experiment of radical quenching revealed that the photogenerated electrons and holes are transferred to CuO to form hydroxyl radicals. Besides, the photocatalyst was characterized by scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), diffused reflectance spectroscopy (DRS), and X-ray photoelectron spectroscopy (XPS) measurements. It has some reference significance for the design of iron-free photocatalysts.