| 纳米复合材料Ag@TiO2@SiO2的制备、光催化及其抑菌性能 |
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| 引用本文： | 石振武,郭少波,薛群虎. 纳米复合材料Ag@TiO2@SiO2的制备、光催化及其抑菌性能[J]. 无机材料学报, 2016, 31(5): 466-472. DOI: 10.15541/jim20150469 |
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| 作者姓名： | 石振武 郭少波 薛群虎 |
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| 作者单位： | (1. 西安建筑科技大学 材料与矿资学院, 西安710055; 2. 陕西理工学院 化学与环境科学学院, 汉中723000; 3. 陕西理工学院 生物科学与工程学院, 汉中723000) |
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| 基金项目： | 国家“十二五”科技计划项目(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SiO2为模板, 采用溶胶-凝胶法合成核壳TiO2@SiO2复合材料, 用光沉积法在TiO2@SiO2表面沉积贵金属Ag合成核壳纳米Ag@TiO2@SiO2复合材料。采用透射电镜、X射线衍射、X射线光电子能谱和紫外-可见漫反射光谱进行表征。用罗丹明为目标污染物研究复合材料的光催化性能, 测试对金黄色葡萄球菌和大肠杆菌的抑菌性能。结果表明, 复合材料Ag@TiO2@SiO2在紫外光的照射下具有较高的催化性能, 且当含银浓度为0.6 mg/mL时, 复合材料对金黄色葡萄球菌抑菌率为93.41%, 对大肠杆菌的抑菌率为97.37%。Ag@TiO2@SiO2具有良好的催化性能和抑菌性能, 有望应用于水处理和医疗器械等领域。
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| 关 键 词： | 复合纳米材料 银 催化 抑菌 |
| 收稿时间： | 2015-09-28 |
| 修稿时间： | 2015-12-11 |
Preparation,Photocatalytic Property and Antibacterial Property of Ag@TiO2@SiO2 Composite Nanomaterials |
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| SHI Zhen-Wu,GUO Shao-Bo,XUE Qun-Hu. Preparation,Photocatalytic Property and Antibacterial Property of Ag@TiO2@SiO2 Composite Nanomaterials[J]. Journal of Inorganic Materials, 2016, 31(5): 466-472. DOI: 10.15541/jim20150469 |
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| Authors: | SHI Zhen-Wu GUO Shao-Bo XUE Qun-Hu |
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| Affiliation: | (1. College of Materials and Mineral Resources, Xi’an University of Architecture and Technology, Xi’an 710055 China; 2. School of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong 723000, China; 3. School of Chemistry and Environmental Science, Shaanxi University of Technology, Hanzhong 723000, China) |
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| Abstract: | TiO2@SiO2 composites with core-shell structure were successfully synthesized using SiO2 as template by Sol-Gel method. Ag nanoparticles (NPs) were photo-deposited on the surface of TiO2@SiO2 to form core-shell Ag@TiO2@SiO2 composites. The resulting samples were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscope (XPS) and UV-Vis diffuse reflectance spectra (DRS). The photocatalytic activity was evaluated by photocatalytic degradation of rhodamine under UV light, and the antibacterial activity against E. coli and S. aureus was also measured. In comparison to TiO2@SiO2, Ag@TiO2@SiO2 exhibited higher photocatalytic activity and antibacterial efficiency after loading uniform Ag NPs on the TiO2. When the concentration of Ag is 0.6 mg/mL, the antibacterial rates against E. coli and S. aureus are 93.41% and 97.37%, respectively. This Ag@TiO2@SiO2 may be used in wastewater treatment, medical equipment and other fields due to its excellent photocatalytic activity and antibacterial property. |
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| Keywords: | composite nanomaterials Ag catalytic inhibition |
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