改性TiO2纳米球在可见光诱导抗菌中的应用  

Application of Modified TiO2 Nanospheres in Visible Light-induced Antibacterial

作　　者：陈泉越 雷艳娇 黄贞鑫 张金艳 朱旭莹 王国薇 CHEN Quanyue;LEI Yanjiao;HUANG Zhenxin;ZHANG Jinyan;ZHU Xuying;WANG Guowei(College of Pathology,Qiqihar Medical University,Qiqihar,Heilongjiang 161006,China;College of Pharmacy,Qiqihar Medical University,Qiqihar,Heilongjiang 161006,China)

机构地区：[1]齐齐哈尔医学院病理学院,黑龙江齐齐哈尔161006 [2]齐齐哈尔医学院药学院,黑龙江齐齐哈尔161006

出　　处：《中国无机分析化学》2020年第6期54-57,共4页Chinese Journal of Inorganic Analytical Chemistry

基　　金：黑龙江省大学生创新训练项目(201911230086)。

摘　　要：以硫酸钛作为钛源,油酸为表面活性剂,尿素为氮源,采用简单有效的一步水热法,在180℃条件下反应6h制备了N掺杂的改性TiO2纳米球(N-TiO2)。N元素的成功引入,扩展了TiO2对光谱的响应范围,使其能够充分利用可见光产生活性氧(ROS)。在可见光照射下,这种N-TiO2纳米复合材料与原始的TiO2、商用的光催化剂德固赛P25-TiO2和Ag沉积的N-TiO2相比,在其周围产生透明的抑菌圈,而其余三种材料看不到明显的抑菌圈。这说明其对革兰氏阴性大肠杆菌具有明显的杀灭效果。In this study,titanium sulfate was used as titanium source,oleic acid as surfactant,urea as nitrogen source,and a simple and effective one-step hydrothermal method was used to prepare N-doped modified TiO2 nanospheres(N-TiO2)at 180℃for 6 hours.The successful introduction of N element has expanded the response range of TiO2 to the spectrum,enabling it to make full use of visible light to generate reactive oxygen species(ROS).Under visible light,this N-TiO2 nanocomposite produces transparent antibacterial circles around the original TiO2,commercial photocatalyst Degussa P25-TiO2,and Ag-deposited N-TiO2,and no obvious inhibition zone was observed for the three materials.This shows that it has obvious killing effect on Gram-negative E.coli.

关 键 词：N-TiO2 可见光 抗菌应用 

分 类 号：O65[理学—分析化学]