氮氟共掺杂二氧化钛薄膜的制备、表征及杀菌性能

doi:10.3724/SP.J.1077.2011.00517

无机材料学报 ›› 2011, Vol. 26 ›› Issue (5): 517-522.DOI: 10.3724/SP.J.1077.2011.00517

氮氟共掺杂二氧化钛薄膜的制备、表征及杀菌性能

丁卉¹, 张诺¹, 戎非^1,2, 付德刚^1,2

(1. 东南大学生物电子学国家重点实验室, 南京 210096; 2. 东南大学苏州研究院苏州环境与生物安全重点实验室, 苏州 215123)

收稿日期:2010-08-03 修回日期:2010-11-10 出版日期:2011-05-20 网络出版日期:2011-06-07
作者简介:丁卉(1986-), 女, 硕士研究生. E-mail: huigrape@yahoo.com.cn
基金资助:
国家“863”计划项目(2006AA10Z436); 江苏省科技厅社会发展项目(BE2008643)

Preparation, Characterization and Bactericidal Activity of N-F-codoped TiO₂Film

DING Hui¹, ZHANG Nuo¹, RONG Fei^1,2, FU De-Gang^1,2

(1. State Key Laboratory of Bioelectronics, Southeast University, Nanjing 210096, China; 2. Suzhou Municipal Key Laboratory of Environmental and Bio-Safety, Suzhou Research Institute, Southeast University, Suzhou 215123, China)

Received:2010-08-03 Revised:2010-11-10 Published:2011-05-20 Online:2011-06-07
Supported by:
Hi-Tech Research and Development Program (863 Program) of China (2006AA10Z436); Social Development Projects of Jiangsu Province (BE2008643)

摘要/Abstract

摘要： 通过溶胶?凝胶法制备了氮氟共掺杂TiO₂(N-F-TiO₂)溶胶, 并利用丝网印刷法在玻璃基底上制备了N-F-TiO₂薄膜, 通过XRD, XPS及漫反射对N-F-TiO₂进行了表征. XRD分析表明制备出的N-F-TiO₂以锐钛矿结晶为主; XPS谱显示 N元素以N-Ti-O成键的形式掺杂在晶体中, F元素以表面吸附和晶格掺杂的形式存在; 紫外?可见漫反射表明与TiO₂相比, N-F-TiO₂的吸收强度明显增强, 光吸收起始位置有明显红移. 利用大肠杆菌做为实验菌种, 采用可见光与365nm紫外光分别作为激发光源, 对其相对存活率及细胞膜损伤程度进行了研究. 结果表明: N-F-TiO₂薄膜具有较高的杀菌效率, 光照60min时紫外光下大肠杆菌相对存活率降低到0, 可见光下为10%; 细胞损伤实验结果表明在紫外光作为光催化激发光源时, 菌悬液中脂质过氧化物(MDA)含量最大值可以达到1.4 nmol/mg干细胞重, 可见光下可以达到0.9 nmol/mg 干细胞重.

关键词: 氮掺杂, 氟掺杂, TiO₂薄膜, 光催化, 杀菌

Abstract: N-F-codoped TiO₂semiconductor Sol (N-F-TiO₂) was synthesized by Sol-Gel method, and N-F-TiO₂film was prepared on soda-lime glass using silk-screen printing. X-ray diffraction (XRD) of N-F-TiO₂exhibits significant diffraction peaks representing the characteristic of anatase phase and contain trace amount of brookite. X-ray photoelectron spectroscope (XPS) test indicates that N element exists with N-Ti-O bonding in the crystals, while F element exists as a dopant in the lattice of TiO₂ or adsorbs on the surface of N-F-TiO₂. Diffuse reflectance spectra (DRS) of N-F-TiO₂shows increased absorption in the range of 300-500 nm compared with that of undoped TiO₂ film. Antibacterial abilities of N-F-TiO₂ films under 60min UV and visible light irradiation are identified using E.coli. The prepared N-F-TiO₂ films exhibit excellent antibacterial abilities as observed both in bacterial surviving test and cell membrane damaging test. After the irradiation of UV-A, the relative survival percentage of E.coli decreases to 0 and the maximum content of malonaldehyde (MDA) is 1.4 nmol/mg (cell dry weight). Under the visible light irradiation, relative survival percentage of E.coli decreases to 10% and the maximum content of malonaldehyde is 0.9 nmol/mg (cell dry weight).

Key words: nitrogen doping, fluorine doping, TiO₂ film, photocatalysis, sterilization

中图分类号:

TB383
Q336

丁卉, 张诺, 戎非, 付德刚. 氮氟共掺杂二氧化钛薄膜的制备、表征及杀菌性能[J]. 无机材料学报, 2011, 26(5): 517-522.

DING Hui, ZHANG Nuo, RONG Fei, FU De-Gang. Preparation, Characterization and Bactericidal Activity of N-F-codoped TiO₂Film[J]. Journal of Inorganic Materials, 2011, 26(5): 517-522.

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氮氟共掺杂二氧化钛薄膜的制备、表征及杀菌性能

Preparation, Characterization and Bactericidal Activity of N-F-codoped TiO₂Film

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氮氟共掺杂二氧化钛薄膜的制备、表征及杀菌性能

Preparation, Characterization and Bactericidal Activity of N-F-codoped TiO2 Film

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Preparation, Characterization and Bactericidal Activity of N-F-codoped TiO₂Film