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Citation: 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. doi: 10.11862/CJIC.2019.183 shu

Effects of Donor-Doped on Photocatalytic Properties of BaTiO3-Based Nanoparticle

  • 1.

    Cadet Brigade 1, School of Aeronautics and Astronautics Engineering, Air Force Engineering University, Xi'an 710051, China

  • 2.

    Department of Basic Sciences, Air Force Engineering University, Xi'an 710051, China

  • 3.

    Cadet Brigade 2, Air and Missile Defense College, Air Force Engineering University, Xi'an 710051, China

Figures(8)

  • 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.
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