全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

微乳液法合成新型可见光催化剂Bi_2WO_6及其光催化性能

Full-Text   Cite this paper   Add to My Lib

Abstract:

以Bi(NO3)3、Na2WO6为原料,采用微乳液法成功合成新型可见光活性的钨酸铋Bi2WO6光催化剂,并利用X射线衍射、扫描电镜、X射线光电子能谱及紫外-可见光漫反射光谱(diffusionreflectancespectra,DRS)等技术手段表征样品的结构和性能。以可见光(波长λ>400nm)为光源研究Bi2WO6对甲基橙分子降解的可见光催化性能。结果表明通过调节微乳液体系的合成温度可得到正交相结构的Bi2WO6光催化剂。DRS结果表明Bi2WO6的光响应波长范围已扩展到400nm以上的可见光区。光催化实验结果表明合成温度是影响Bi2WO6可见光催化活性的主要因素,合成温度为170℃时,制备的Bi2WO6光催化效率最高,3h内使甲基橙的脱色率达到98.9%。

References

[1]  GE L,XU M X,FANG H B.Synthesis of novel photocatalytic InVO4-TiO2thin films with visible light photoactivity[J].Mater Lett,2007,61(1):63-66. [2]GE L,XU M X,FANG H B.Synthesis and characterization of the Pd/InVO4-TiO2co-doped thin films with visible light photocatalytic activities[J].Appl Surf Sci,2006,253(4):2257-2263. [3]ZHANG X,AI Z H,JIA F L,et al.Selective synthesis and visible-light photocatalytic activities of BiVO4with different crystalline phases[J].Mater Chem Phys,2007,103(1):162-167. [4]OUYANG S X,ZHANG H T,LI D F,et al.Electronic structure and photocatalytic characterization of a novel photocatalyst AgAlO2[J].J Phys Chem B,2006,110,11677-11682. [5]FANG H B,XU M X,GE L,et al.Synthesis and photocatalytic proper-ties of InVO4sol containingnanocrystals by mild hydrothermal pro-cessing[J].Trans Nonferrous Met Soc China,2006,16:s373-s376. [6]TANG J W,ZOU Z G,MASAHIKO K,et al.Photocatalytic degrada-tion of MB on MIn2O4(M=alkali earth metal)under visible light:ef-fects of crystal and electronic structure on the photocatalytic activity[J].Catal Today,2004,93/95:885-889. [7]TANG J,ZOU Z G,YIN J,et al.Photocatalytic degradation of methylene blue on Caln2O4under visible light irradiation[J].Chem Phys Lett,2003,382(1/2):175-179. [8]TANG J W,ZOU Z G,YE J H.Photocatalytic decomposition of organic contaminants by Bi2WO6under visible light irradiation[J].Catal Lett,2004,92(1/2):53-56. [9]ZHANG L S,WANG W Z,ZHOU L,et al.Bi2WO6nano-and micro-structures:shape control and associated visible-light-driven photocata-lytic activities[J].Small,2007,3(9):1618-1625. [10]SHANG M,WANG W Z,XU H L.New Bi2WO6nanocages with high visible-light-driven photocatalytic activities prepared in refluxing EG[J].Cryst Growth Design,2009,9(2):991-996. [11]WU J,DUAN F,ZHENG Y,et al.Synthesis of Bi2WO6nanoplate-built hierarchical nest-like structures with visible-light-induced photocata-lytic activity[J].J Phys Chem C,2007,111(34):12866-12871. [12]LI Y,LIU J P,HUANG X T.Synthesis and Visible-light photocatalytic property of Bi2WO6hierarchical octahedron-like structures[J].Nanoscale Res Lett,2008,3:365-371. [13]FU H B,ZHANG L W,YAO W Q,et al.Photocatalytic properties of nanosized Bi2WO6catalystssynthesized via a hydrothermal process[J].Appl Catal Environ,2006,66:100-110. [14]WU L,BI J H,LI Z H,et al.Rapid preparation of Bi2WO6photocata-lyst with nanosheet morphology via microwave-assisted solvothermal synthesis[J].Catal Today,2008,131:15-20.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133