锌铈共掺杂二氧化钛纳米材料制备与表征及其抗菌性能的研究

doi:10.3724/SP.J.1077.2013.12337

无机材料学报 ›› 2013, Vol. 28 ›› Issue (1): 117-122.DOI: 10.3724/SP.J.1077.2013.12337

• • 上一篇

锌铈共掺杂二氧化钛纳米材料制备与表征及其抗菌性能的研究

王昱征^1,2,3,4, 薛向欣^1,2,3,4, 杨合^1,2,3,4

(1. 东北大学冶金资源与生态环境研究所, 沈阳 110819; 2. 辽宁省冶金资源循环科学重点实验室, 沈阳 110819; 3. 辽宁省硼资源综合利用工程技术研究中心, 沈阳 110819; 4. 硼资源生态化利用技术与硼材料辽宁省高校重点实验室, 沈阳 110819)

收稿日期:2012-05-23 出版日期:2013-01-10 网络出版日期:2012-12-20
作者简介:王昱征. E-mail: zheng_wangyu@qq.com

Preparation and Characterization of Zinc and Cerium Co-doped Titania Nano-materials with Antibacterial Activity

WANG Yu-Zheng^1,2,3,4, XUE Xiang-Xin^1,2,3,4, YANG He^1,2,3,4

(1. Institute of Metallurgical Resources and Environmental Engineering, Northeastern University, Shenyang 110819, China; 2. Liaoning Key Laboratory of Metallurgical Resources Recycling Science, Shenyang 110819, China; 3. Liaoning Engineering and Technology Research Center of Boron Resources Comprehensive Utilization, Shenyang 110819, China; 4. Liaoning Provincial Universities Key Laboratory of Boron Resources Ecological Utilization Technology and Boron Materials, Shenyang 110819, China)

Received:2012-05-23 Published:2013-01-10 Online:2012-12-20
About author:WANG Yu-Zheng(1983–), female, PhD candidate. E-mail: zheng_wangyu@qq.com
Supported by:
Foundation item: National Natural Science Foundation of China (51090384)

摘要/Abstract

摘要：

采用溶胶-凝胶法, 在不同的焙烧温度下合成锌/铈共掺杂二氧化钛纳米材料。用X射线衍射(XRD)、透射电子显微镜(TEM)、X射线光电子能谱(XPS)和紫外-可见漫反射光谱(DRS)对样品进行了表征。采用抑菌环法, 以大肠杆菌为实验菌种, 对Zn/Ce-TiO₂纳米材料抗菌性能进行检测。结果表明: 样品的结晶度和晶相完全取决于焙烧温度的高低; 部分锌进入二氧化钛晶格中, 其余掺杂离子以CeO₂和Zn₂Ti₃O₈形式存在; 与暗态下相比, 在可见光激发下, Zn/Ce-TiO₂纳米材料具有超强的抗菌性。对锌/铈共掺杂作用机制进行了深入探讨。

关键词: 锌/铈共掺杂, 二氧化钛, 抗菌活性, 可见光

Abstract:

Zinc and cerium co-doped titania (Zn/Ce-TiO₂) nano-materials were synthesized by a Sol-Gel method at different calcination temperatures. Zn/Ce-TiO₂ nano-materials were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), X-ray photoelectron spectroscope (XPS) and UV-Vis diffuse reflectance spectra (DRS). With the test of bacterial inhibition zone, the antibacterial properties of Zn/Ce-TiO₂ nano-materials on E. coli. were investigated. The results show that crystallinity and the crystal phase of nano-materials are closely dependent on the calcination temperature. Zinc ions and cerium ions exist in the form of Zn₂Ti₃O₈ and CeO₂ phase, respectively. The Zn/Ce-TiO₂ nano-materials synthesized exhibit enhanced antibacterial activity under visible light irradiation compared with it in the dark. Ultimately, the action mechanism of Zn/Ce co-doping is discussed.

Key words: zinc and cerium co-doping, titania, antibacterial activity, visible light

中图分类号:

TB321

王昱征, 薛向欣, 杨合. 锌铈共掺杂二氧化钛纳米材料制备与表征及其抗菌性能的研究[J]. 无机材料学报, 2013, 28(1): 117-122.

WANG Yu-Zheng, XUE Xiang-Xin, YANG He. Preparation and Characterization of Zinc and Cerium Co-doped Titania Nano-materials with Antibacterial Activity[J]. Journal of Inorganic Materials, 2013, 28(1): 117-122.

图/表 6

Fig. 1 XRD patterns of Zn/Ce-TiO2 calcined at different temperatures

Table 1 Lattice parameters of TiO2 nano-materials

Materials	a (b) /nm	c / nm	V / nm³
TiO₂-550	0.37820	0.95076	0.13599
Zn-Ce/TiO₂-550	0.37846	0.92187	0.13204
Zn-Ce/TiO₂-600	0.37826	0.93116	0.13323
Zn-Ce/TiO₂-650	0.37867	0.92702	0.13338
Zn-Ce/TiO₂-700	0.37861	0.95734	0.13723
Zn-Ce/TiO₂-750	0.37885	0.95971	0.13774
Zn-Ce/TiO₂-800	0.37851	0.94746	0.13574

Fig. 2 TEM image of Zn-Ce/TiO2-600 (a) and SAED pattern of Zn-Ce/TiO2-600 (b)

Fig. 3 XPS spectra for Zn/Ce-TiO2 materials

Fig. 4 UV-Vis diffuse reflection spectra for Zn/Ce-TiO2 materials calcined at different temperatures

Fig. 5 Antibacterial results of Zn/Ce co-doped TiO2 at different calcination temperatures

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锌铈共掺杂二氧化钛纳米材料制备与表征及其抗菌性能的研究

Preparation and Characterization of Zinc and Cerium Co-doped Titania Nano-materials with Antibacterial Activity

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