Ag/BiOBr复合材料的制备及其光催化性能研究
摘要
通过贵金属负载对BiOBr进行修饰,采用一步法制备出花状结构的Ag/BiOBr复合光催化剂,并采用XRD、FE-SEM、TEM和UV-Vis等表征手段对复合材料的组成、形貌、结构进行了分析、表征,确定了Ag纳米粒子成功负载在BiOBr表面。在模拟可见光下降解MB、MO、RhB来评估复合材料的光催化性能,实验结果表明:Ag负载的Ag/BiOBr催化剂对MB具有较好的降解性能;当Ag负载量为2%时,光照120 min后99.6%的MB被有效降解;同时,Ag/BiOBr催化剂对多种污染物质均有良好的降解效果,具有潜在的实际应用前景。
引文
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[3]Young Cissillia,Lim Tuti Mariana,Chiang Ken,Scott Jason,Amal Rose.Photocatalytic oxidation of toluene and trichloroethylene in the gas-phase by metallised (Pt,Ag) titanium dioxide [J].Applied Catalysis B:Environmental,2008,78(1-2):1～10.
[4]Sun Bo,VorontsovAlexandre V,SmirniotisPanagiotis G.Role of platinum deposited on TiO2 in phenol photocatalytic oxidation [J].Langmuir,2003,19(8):3151～3156.
[5]Yin Haibo,Chen Xiaofang,HouRujing,Zhu Huijuan,Li Shiqing,HuoYuning,Li Hexing.Ag/BiOBr film in a rotating-disk reactor containing long-afterglow phosphor for round-the-clock photocatalysis [J].ACS applied materials & interfaces,2015,7(36):20076～20082.
[6]Zhang Lisha,Wong Kin-Hang,Chen Zhigang,Jimmy C Yu,Zhao Jincai,Hu Chun,Chan Chiu-Yeung,Wong Po-Keung.AgBr-Ag-Bi2WO6nanojunction system:A novel and efficient photocatalyst with double visible-light active components [J].Applied Catalysis A:General,2009,363(1-2):221～229.
[7]Matsubara Kazuki,TatsumaTetsu.Morphological changes and multicolor photochromism of Ag nanoparticles deposited on single-crystalline TiO2 surfaces [J].Advanced Materials,2007,19(19):2802～2806.
[8]Yu Changlin,Jimmy C Yu,Chan Mui.Sonochemical fabrication of fluorinated mesoporous titanium dioxide microspheres [J].Journal of Solid State Chemistry,2009,182(5):1061～1069.
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