| 银氮共掺杂二氧化钛的制备及其抗菌性能 |
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| 引用本文： | 邵享文, 王槟强, 艾翠玲, 陈登极. 银氮共掺杂二氧化钛的制备及其抗菌性能[J]. 环境工程学报, 2016, 10(7): 3415-3420. doi: 10.12030/j.cjee.201502123 |
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| 作者姓名： | 邵享文 王槟强 艾翠玲 陈登极 |
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| 作者单位： | 1.福州大学土木工程学院, 福建省光催化重点实验室-省部共建国家重点实验室培育基地, 福州 350108 |
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| 基金项目： | 福建省光催化重点实验室-省部共建国家重点实验室培育基地基金(038029) 国家自然科学基金青年基金项目(51008080) |
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| 摘 要： | 采用溶胶凝胶-水热反应法,以金属银元素和非金属氮元素掺杂改性二氧化钛,制备出银氮共掺杂二氧化钛光催化剂,利用XRD、SEM、TEM和IR等测试技术对Ag-N-TiO2的晶型结构、形貌结构、元素组成等进行表征。结果表明,采用溶胶凝胶-水热反应法所制备的Ag-N-TiO2具有晶型好、结晶度高、粒径小(11.32 nm)、分布均匀等优点。以大肠埃希氏菌为目标细菌,考察Ag-N-TiO2可见光光催化和避光条件下抗菌性能。结果表明,Ag-N-TiO2在可见光和避光条件下都具有良好的抗菌效果, 对大肠埃希氏菌的抑菌圈直径分别达到了15.2 mm和14.7 mm,SEM形态表征显示,添加催化剂的细菌细胞表面出现凹陷、皱褶或孔洞,同时鞭毛消失,表明所制催化剂具有良好的抗菌效果。
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| 关 键 词： | 银氮共掺杂二氧化钛 溶胶凝胶-水热法 抗菌性能 抑菌圈直径 |
| 收稿时间： | 2015-03-18 |
Preparation and antibacterial active of Ag-N-codoped TiO2 photocatalyst |
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| SHAO Xiangwen, WANG Binqiang, AI Cuiling, CHEN Dengji. Preparation and antibacterial active of Ag-N-codoped TiO2 photocatalyst[J]. Chinese Journal of Environmental Engineering, 2016, 10(7): 3415-3420. doi: 10.12030/j.cjee.201502123 |
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| Authors: | SHAO Xiangwen WANG Binqiang AI Cuiling CHEN Dengji |
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| Affiliation: | 1.Fujian Provincial Key Laboratory of Photocatalysis-State Key Laboratory Breeding Base, College of Civil Engineering, Fuzhou University, Fuzhou 350108, China |
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| Abstract: | An Ag-N-codoped TiO2 photocatalyst was prepared by a new sol-gel hydrothermal method and its morphology,structure and elemental composition were characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM),transmission electron microscopy(TEM) and infrared spectroscopy(IR).Meanwhile,the antibacterial activity on Escherichia coli of Ag-N-TiO2 was also studied.The synthesized Ag-N-TiO2 photocatalyst displayed good crystal structure with high crystallinity,uniform dispersion and nano-order-scale size(diameter was about 11.32 nm).Furthermore,it showed high antibacterial activity against Escherichia coli,with an average diameter of the antibacterial halo of 15.2 mm and 14.7 mm in visible light and dark conditions,respectively.SEM images revealed that the surface of bacterial cells became sunken,corrugated,and perforated,and that the flagella were lost.Therefore,the Ag-N-TiO2 photocatalyst has the potential for use in the disinfection of drinking water. |
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| Keywords: | Ag-N-codoped TiO2 sol-gel combined hydrothermal antibacterial performance antibacterial circle diameter |
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