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Effects of Donor-Doped on Photocatalytic Properties of BaTiO3-Based Nanoparticle
Author NameAffiliationE-mail
MENG Guo-Xiang Cadet Brigade 1, School of Aeronautics and Astronautics Engineering, Air Force Engineering University, Xi'an 710051, China  
TIAN Xiao-Xia Department of Basic Sciences, Air Force Engineering University, Xi'an 710051, China xiaoxiatian@126.com 
ZHANG Jia-Rui Cadet Brigade 2, Air and Missile Defense College, Air Force Engineering University, Xi'an 710051, China  
ZHANG Xiang Cadet Brigade 1, School of Aeronautics and Astronautics Engineering, Air Force Engineering University, Xi'an 710051, China  
HAN Feng-Qing Cadet Brigade 1, School of Aeronautics and Astronautics Engineering, Air Force Engineering University, Xi'an 710051, China  
QU Shao-Bo Department of Basic Sciences, Air Force Engineering University, Xi'an 710051, China shaoboqu@126.com 
Abstract: Cu2O was synthesized by chemical precipitation, La doped BaTiO3-based powders were synthesized via a hydrothermal method using the Cu2O as the sacrifice template. The structure, morphology and visible light properties have been characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), high-resolution transmission electron microscope (HR-TEM), X-ray photoelectron spectroscopy (XPS), scanning electron micro-graphs (SEM), UV-Vis diffuse reflectance spectrophotometer (UV-Vis DRS). The results showed that the doping of La3+ increased the conductivity and made the range of photo-response broadened, which reduced the band gap of the semiconductor and accelerated the separation of photo-generated electron hole pairs. The surface defects were induced with a facile and effective approach by La3+ ion doping, and the photocatalytic performance of BaTiO3 was improved. However, as the doping amount of La3+ ions increased, the band gap of the semiconductors decreased and the redox ability of the phototgenerated electrons and holes deceased when the dopant was excessive. When the doping amount was 4%(w/w), the photocatalytic performance of the sample was the best, and the degradation efficiency of 4-nitrophenol was 93.2% after 360 min visible light irradiation. The decomposition rate of 4-nitrophenol was still above 86.7% even after 5 cycles, thus artificial catalytic defects of La donor-doped BaTiO3-based nanoparticle could effectively improve the photocatalytic properties.
Keywords: BaTiO3  donor doping  template method  photocatalytic
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MENG Guo-Xiang,TIAN Xiao-Xia,ZHANG Jia-Rui,ZHANG Xiang,HAN Feng-Qing,QU Shao-Bo.Effects of Donor-Doped on Photocatalytic Properties of BaTiO3-Based Nanoparticle[J].Chinese Journal of Inorganic Chemistry,2019,35(8):1387-1395.
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Chinese Journal of Inorganic Chemistry