BixTiOy-TiO2复合膜电极光电催化去除模拟压载水中细菌

应用化学, 2014, 31(5): 600-606. doi: 10.3724/SP.J.1095.2014.30379

BixTiOy-TiO2复合膜电极光电催化去除模拟压载水中细菌

1.南京师范大学化学与材料科学学院南京210097

2.南京师范大学化学与材料科学学院南京210097

3.江苏经贸职业技术学院工程技术系南京210007

4.南京师范大学化学与材料科学学院南京210097;化工污染控制与资源化江苏省高校重点实验室(南京理工大学)南京210093

基金项目: Jiangsu Province Key Laboratory of the Education Commission of Chemical Pollution Control and Resources Reuse 江苏省“青蓝工程” 江苏省生物医药功能材料协同创新中心和南京师范大学光电重点实验室基金 the National Natural Science Foundation of China(51278253) "Blue project" in Jiangsu Province Jiangsu Collaborative Innovation Center of Biomedical Functional Materials and Key Laboratory of Applied Photochemistry the Environmental Protection Science and Technology Program of Jiangsu Province(201302) 中央高校基本科研业务费专项资金(30920130122007) 江苏省环保科技专项基金(2013002) the Central University Basic Scientific Research Special Funds(30920130122007) 国家自然科学基金资助项目(51278253) 化工污染控制与资源化江苏省高校重点实验室开放基金

关键词： BixTiOy-TiO2复合膜 , 光电催化 , 模拟压载水 , 灭菌

Photoelectrocatalytic Removal of Bacteria in Simulated Ballast Water Using BixTiOy-TiO2 Composite Film Electrode

Keywords： BixTiOy-TiO2 composite film , photoelectric catalysis , simulated ballast water , sterilization

溶剂热-聚乙烯醇粘附法制备了钛网负载BixTiOy-TiO2复合膜电极.利用X射线衍射、紫外-可见漫反射、光致发光(PL)、扫描电子显微镜和能谱(EDS)等测试技术对合成的纳米材料和膜电极进行了表征.利用三电极系统对模拟压载水的灭菌效果进行实验研究.考察了外加电压、光源和膜电极的使用次数对光电催化灭菌效果的影响.UV-Vis实验表明,BixTiOy-TiO2复合材料比纯TiO2有好的可见光吸收;PL实验证明,复合材料比纯TiO2有更高光量子效率.对细菌浓度为106 CFU/mL的模拟压载水的光电催化灭菌实验结果表明,外加电压为9V,电极与溶液接触面积为140 cm2时,20 W紫外杀菌灯照射下反应2min即可完全去除压载水中的细菌;聚乙烯醇粘附法制备的电极重复使用20次,灭菌效果不变.

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