无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2013, Vol. 45 ›› Issue (8): 60-.

• 论文 • 上一篇    

钒酸铋的制备及可见光降解罗丹明B的研究

刘 利,王亚飞,崔文权,梁英华,王 萌   

  1. 河北联合大学化学工程学院,河北唐山 063009
  • 出版日期:2013-08-10 发布日期:2013-08-14

Preparation of BiVO4 and photocatalytic degradation of RhB under visible light

 LIU   Li, WANG  Ya-Fei, CUI  Wen-Quan, LIANG  Ying-Hua, WANG   Meng   

  1. School of Chemical Engineering,Hebei United University,Tangshan 063009,China
  • Online:2013-08-10 Published:2013-08-14

摘要: 以偏钒酸铵和碳酸铋为原料,用NaOH调节体系pH,水热法合成钒酸铋(BiVO4)光催化剂。利用XRD和UV-Vis漫反射对样品的晶型结构和光吸收特性进行表征分析。以罗丹明B为目标降解物,卤素灯(λ>400 nm)为光源,探讨水热温度、水热时间对合成BiVO4催化剂的可见光催化活性影响。结果表明,在水热温度为200 ℃、水热时间为8 h的条件下合成的钒酸铋光解效率最高。实验还研究了罗丹明B水溶液pH、催化剂投加量对光催化罗丹明B降解率的影响。结果表明,在罗丹明B水溶液pH为3、初始质量浓度为10 mg/L、每60 mL溶液催化剂投加量为0.4 g时能达到较好的光催化效果,反应2 h后降解率可达97%。

关键词: 钒酸铋, 罗丹明B, 水热法, 可见光催化降解

Abstract: BiVO4 was synthesized via hydrothermal method,with Bi(NO33 and NH4VO3 as raw materials and with NaOH to adjust pH of the system.Crystal structure and optical absorption properties of the as-prepared material were characterized by XRD and UV-Vis.Taking rhodamine B as degradation objective,halogen lamp(λ>400 nm)as light source,the influences of hydrothermal temperature and time on the visible photocatalytic activity of BiVO4 were investigated.Results showed that the best preparation conditions were 200 ℃ and 8 h.Influences of pH of rhodamine B solution and dosage of catalyst on degradation rate of rhodamine B were also investigated,and results showed that when pH was 3 and catalyst′s dosage was 0.4 g(per 60 mL solution),the photocatalytic effect was the best, and the photocatalytic degradation rate could reach 97% after reaction for 2 h.

Key words: bismuth vanadate, rhodamine B, hydrothermal method, visible photocatalytic degradation

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