Citation: ZHANG Hong-guang, WANG Wen-tai, FENG Li-juan, LI Chun-hu, WANG Liang. Effect of hydrothermal pH value on composition and morphology of bismuth oxybromide and their photocatalytic performance[J]. Journal of Fuel Chemistry and Technology, ;2019, 47(5): 582-589. shu

Effect of hydrothermal pH value on composition and morphology of bismuth oxybromide and their photocatalytic performance

College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China

Corresponding author: WANG Liang, wangliang_good@163.com
Received Date: 12 February 2019
Revised Date: 4 April 2019

Fund Project: The project was supported by the Foundation of State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering 2018-K21The project was supported by the Foundation of State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering (2018-K21)

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A series of bismuth oxybromide photocatalysts were fabricated via a one-step hydrothermal method through pH value adjustment. The as-prepared photocatalysts were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), UV-vis diffuse reflectance spectroscopy (UV-vis DRS) and photoluminescence spectroscopy (PL). The photocatalytic activities of the as-prepared samples were examined by degradation of Rhodamine B (RhB), methyl orange (MO) and phenol. The results indicate that the B9 displayed the highest photocatalytic activities. The enhanced photocatalytic activity can be attribute to enhanced absorption in the visible region and the decreased recombination efficiency of photogenerated charge carriers. The effect of hydrothermal pH value on the composition and morphology was explored and a synthesis process of bismuth oxybromide was proposed.
- bismuth oxybromide,
- hydrothermal pH value,
- organics pollutants degradation,
- visible light
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