| 利用铅锌废渣制备银修饰纳米复合材料的研究 |
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| 引用本文： | 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 |
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| 作者姓名： | 石振武 杨海东 宋娟 杨守洁 薛群虎 |
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| 作者单位： | 西安建筑科技大学;陕西理工大学;陕西有色金属控股集团有限责任公司 |
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| 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); |
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| 摘 要： | 以含银的铅锌废渣为银源,联合采用氯盐法、Stober法、溶胶凝胶法以及光沉积法制备银修饰纳米复合材料Ag@TiO_2@SiO_2。XRD和TEM的分析表明:Ag@TiO_2@SiO_2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TiO_2壳层上。XPS分析指出:TiO_2以Ti-O-Si键化学吸附在SiO_2上,而沉积在TiO_2上的银是银的单质。Uv-Vis的分析表明:材料Ag@TiO_2@SiO_2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@TiO_2@SiO_2的光催化性能优良。
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| 关 键 词： | 银修饰的纳米复合材料 铅锌废渣 光催化性能 |
| 收稿时间： | 2016-07-08 |
| 修稿时间： | 2016-08-23 |
Preparation of Silver Modified Composite Nanomaterials from Metallurgical Lead and Zinc Slag |
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| Shi Zhenwu,Yang Haidong,Song Juan,Yang Shoujie and 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 |
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| Authors: | Shi Zhenwu Yang Haidong Song Juan Yang Shoujie Xue Qunhu |
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| Affiliation: | Xian University of Architecture and Technology,Institute of material science and mining,,Shaanxi SCI-TECH University,School of Chemistry and Environmental Science,Shaanxi SCI-TECH University,School of Chemistry and Environmental Science,Xian University of Architecture and Technology,Institute of material science and mining |
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| Abstract: | 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. |
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| Keywords: | silver modified composite metallurgical lead and zinc slag photocatalytic performance |
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