Br-掺杂Bi2WO6的水热法合成及其可见光催化性能  

Hydrothermal Synthesis and Visible-Light Photocatalytic Performance of Br^- Doped Bi_2WO_6

作　　者：张田[1] 邹正光[1,2] 何金云[1,2] 龙飞[1,2] 王吉林[1,2] 莫淑一[1,2] 

机构地区：[1]桂林理工大学材料科学与工程学院,桂林541004 [2]有色金属及材料加工新技术教育部重点实验室,桂林541004

出　　处：《无机化学学报》2017年第6期954-962,共9页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.51662005);广西自然科学基金(No.2014GXNSFFA118004)资助项目

摘　　要：以Bi(NO_3)_3·5H_2O和Na_2WO_4·2H_2O为主要原料,采用水热法合成了纯相Bi_2WO_6,并对其进行非金属离子Br-掺杂改性。采用XRD、SEM、TEM、XPS、Raman、PL和DRS研究了Br^-掺杂对Bi_2WO_6的物相结构、形貌和可见光催化性能的影响。结果表明,Br-掺杂可有效提高Bi_2WO_6的可见光催化性能,当掺杂量(物质的量百分数)为8%时,溴掺杂Bi_2WO_6的光催化性能最好,可见光照射40 min后,可降解96.73%的罗丹明-B,与未掺杂Bi_2WO_6相比,其降解率提高了36.32%。Br^- ions doped Bi2WO6 was prepared using bismuth nitrate Bi（NO3）3·5H2O and sodium tungstate Na2WO4·2H2O as raw materials by hydrothermal synthesis method. The effect of Br- doping on the phase structure, morphology and visible light catalytic properties of Bi2WO6 was investigated using XRD, SEM, TEM, XPS, Raman, PL and DRS. The results indicated that the visible-light-driven photocatalytic performance of Bi2WO6 was greatly enhanced after Br^- doping. When Br^- was doped with 8% of the amount （percentage of amount of substance）, the Bi2WO6 photocatalyst displayed the best photocatalytic performance. It could decompose 96.73% RhB after 40 minutes irradiation, which was 36.32% higher than that of the pristine one.

关 键 词：钨酸铋 水热法合成 Br掺杂 可见光催化 

分 类 号：O613.43[理学—无机化学] O643.322[理学—化学]