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Effects of Donor-Doped on Photocatalytic Properties of BaTiO3-Based Nanoparticle |
Author Name | Affiliation | E-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 |
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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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