石振武,杨海东,宋娟,杨守洁,薛群虎.利用铅锌废渣制备银修饰纳米复合材料的研究[J].稀有金属材料与工程,2018,47(7):2257~2261.[Shi Zhenwu,Yang Haidong,Song Juan,Yang Shoujie,Xue Qunhu.Preparation of Silver Modified Composite Nanomaterials from Metallurgical Lead and Zinc Slag[J].Rare Metal Materials and Engineering,2018,47(7):2257~2261.]
利用铅锌废渣制备银修饰纳米复合材料的研究
投稿时间:2016-07-08  修订日期:2016-08-23
中文关键词:  银修饰的纳米复合材料  铅锌废渣  光催化性能
基金项目:国家“十二五”科技支撑计划项目(2011BAJ02B01-01);陕西省“13115”科技创新工程重大科技专项(2010ZDKG-91);
中文摘要:
      以含银的铅锌废渣为银源,联合采用氯盐法、St?ber法、溶胶凝胶法以及光沉积法能够制备出银的纳米复合材料Ag@TiO2@SiO2。XRD和TEM的分析表明:Ag@TiO2@SiO2具有核壳结构的纳米材料,Ag以10nm团簇的形式沉积在锐钛矿型TiO2壳层上。XPS分析指出:TiO2以Ti-O-Si键化学吸附在SiO2上,而沉积在TiO2上的银是银的单质。Uv-Vis的分析表明:材料Ag@TiO2@SiO2对光响应范围扩大到可见光区。罗丹明的光降解反应表明,Ag@TiO2@SiO2的光催化性能优良。
Preparation of Silver Modified Composite Nanomaterials from Metallurgical Lead and Zinc Slag
英文关键词:silver modified composite  metallurgical lead and zinc slag  photocatalytic performance
英文摘要:
      Metallurgical lead and zinc slag taken as resource of silver, silver modified nanomaterials Ag@SiO2@TiO2 were successfully synthesized by chlorine salt method, St?ber method, sol-gel method and photo-deposited method. X-ray diffraction (XRD)and transmission electron microscopy (TEM) prove that composite Ag@SiO2@TiO2with core-shell structure, which Ag was deposited on anatase TiO2 in the form of cluster with 10 nm diameter. X-ray photoelectron spectroscope (XPS) indicates that in silver modified Ag@SiO2@TiO2, TiO2 was chemisorbed on SiO2 core in Ti-O-Si chemical bond and Ag deposited on TiO2 shell was elementary substance of silver. UV-vis diffuse reflectance spectra (DRS) shows that silver modified Ag@SiO2@TiO2 widened TiO2 response range towards light to expand to visible region. The photocatalytic degradation reaction of rhodamine indicates that silver modified nanocomposite Ag@SiO2@TiO2 possessed the excellt catalytic performance.
作者单位E-mail
石振武 西安建筑科技大学材料与矿资学院 shizhenwu2013@163.com 
杨海东 陕西有色金属控股集团有限责任公司  
宋娟 陕西理工大学 化学与环境学院  
杨守洁 陕西理工大学 化学与环境学院  
薛群虎 西安建筑科技大学材料与矿资学院  
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