Effects of Precursors on Synthesis and Properties of Bi2WO6 Photocatalyst by Molten Salt Method

doi:10.12034/j.issn.1009-606X.215322

Chin. J. Process Eng. ›› 2016, Vol. 16 ›› Issue (1): 170-175.DOI: 10.12034/j.issn.1009-606X.215322

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Effects of Precursors on Synthesis and Properties of Bi2WO6 Photocatalyst by Molten Salt Method

ZHOU Lin JIN Chuan-gui YU Yi LI Jie LU Zheng RAN Song-lin

School of Materials Science and Engineering, Anhui University of Technology School of Materials and Engineering, Anhui University of Technology School of Materials Science and Engineering, Anhui University of Technology School of Metallurgy and Resource, Anhui University of Technology School of Materials Science and Engineering, Anhui University of Technology School of Materials Science and Engineering, Anhui University of Technology

Received:2015-09-08 Revised:2015-11-20 Online:2016-02-20 Published:2016-12-22
Contact: RAN Song-lin

前驱体对熔盐法合成Bi2WO6光催化剂及其性能的影响

周林晋传贵余意李杰陆正冉松林

安徽工业大学材料科学与工程学院安徽工业大学材料科学与工程学院安徽工业大学材料科学与工程学院安徽工业大学冶金与资源学院安徽工业大学材料科学与工程学院安徽工业大学材料科学与工程学院

通讯作者: 冉松林

Abstract

Abstract: Bi2WO6 photocatalyst powder was synthesized by molten salt method using precipitate from mixed Bi(NO3)3 and Na2WO4 aqueous solutions with and without addition of ammonia, commercial Bi(NO3)3×5H2O and Na2WO4×2H2O as precursors, respectively. The effects of precursors on the phase composition, morphology and degradation of RhB under visible light were examined. The results indicated that pure flake-like Bi2WO6 powder could be prepared from two precursors: precipitate from mixed Bi(NO3)3 and Na2WO4 aqueous solutions with addition of ammonia solution, and commercial Bi(NO3)3×5H2O+Na2WO4×2H2O. Bi2WO6 powder originated from the former precursor performed better on the photocatalytic degradation of RhB, which could degrade 0.01 mmol/L RhB almost completely (99%) under visible light irradiation within 60 min.

Key words: Bi2WO6, molten salt method, precursor, photocatalysi, RhB

摘要： 分别以Bi(NO3)3和Na2WO4溶液直接混合所得沉淀、加氨水所得沉淀及Bi(NO3)3×5H2O+Na2WO4×2H2O为前驱体，采用熔盐法合成Bi2WO6光催化剂粉体，研究了不同前驱体所制粉体的物相、形貌，以其为催化剂，在可见光照射下降解罗丹明B溶液. 结果表明，用后二者为前驱体均可得到薄片状纯相Bi2WO6粉体. 加氨水所得沉淀为前驱体所制Bi2WO6粉体的光催化性能最好，在可见光照射下对0.01 mmol/L RhB溶液的降解率在60 min内达99%.

关键词: Bi2WO6, 熔盐法, 前驱体, 光催化, 罗丹明B

CLC Number:

TG174

ZHOU Lin JIN Chuan-gui YU Yi LI Jie LU Zheng RAN Song-lin. Effects of Precursors on Synthesis and Properties of Bi2WO6 Photocatalyst by Molten Salt Method[J]. Chin. J. Process Eng., 2016, 16(1): 170-175.

周林晋传贵余意李杰陆正冉松林. 前驱体对熔盐法合成Bi2WO6光催化剂及其性能的影响[J]. 过程工程学报, 2016, 16(1): 170-175.

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Effects of Precursors on Synthesis and Properties of Bi2WO6 Photocatalyst by Molten Salt Method

前驱体对熔盐法合成Bi2WO6光催化剂及其性能的影响

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