棒状ZnWO4纳米晶的合成及其光催化性能

doi:10.3724/SP.J.1077.2012.12024

无机材料学报 ›› 2012, Vol. 27 ›› Issue (11): 1159-1163.DOI: 10.3724/SP.J.1077.2012.12024 CSTR: 32189.14.SP.J.1077.2012.12024

棒状ZnWO₄纳米晶的合成及其光催化性能

张晓薇¹, 曹丽云¹, 黄剑锋¹, 刘一军², 李佳¹

(1. 陕西科技大学教育部轻化工助剂化学与技术重点实验室, 西安 710021; 2. 广东蒙娜丽莎新型材料集团有限公司, 佛山 528211)

收稿日期:2012-01-09 修回日期:2012-02-24 出版日期:2012-11-20 网络出版日期:2012-10-25
作者简介:张晓薇(1988–), 女, 硕士研究生. E-mail: zhangxiaoweifish@126.com
基金资助:
国家自然科学基金(51072108); 陕西省教育厅自然科学专项基金(2010JK444); 陕西省教育厅自然科学专项基金(11JK0820); 陕西科技大学研究生创新基金

Fabrication and Photocatalysis of Rod-like ZnWO₄ Nanocrystallites

ZHANG Xiao-Wei¹, CAO Li-Yun¹, HUANG Jian-Feng¹, Liu Yi-Jun², LI Jia¹

(1. Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology, Xi’an 710021, China; 2. Guangdong Monalisa Ceramics Co.,Ltd., Foshan 528211, China)

Received:2012-01-09 Revised:2012-02-24 Published:2012-11-20 Online:2012-10-25
About author:ZHANG Xiao-Wei. E-mail: zhangxiaoweifish@126.com
Supported by:
National Natural Science Foundation of China (51072108); Natural Science Special Projects of Shaanxi Education Department (2010JK444); Natural Science Special Projects of Shaanxi Education Department (11JK0820); The Graduate Innovation Fund of Shaanxi University of Science and Technology

摘要/Abstract

摘要： 以Na₂WO₄·2H₂O和Zn(COOCH₃)₂·2H₂O为原料, 采用微波水热法, 制备具有光催化性能的黑钨矿型棒状ZnWO₄纳米晶. 利用X射线衍射仪(XRD)、透射电子显微镜(TEM)、紫外–可见吸收光谱仪(UV-Vis)和光致发光谱仪(PL)分别对产物的物相、形貌和光学性能进行了表征. 结果表明: 采用微波水热法, 产物沿(100)晶面取向生长为棒状结构; 对其光学性能和光催化性能的研究显示, 所制备的ZnWO₄具有蓝光发光特性, 其激发峰和发射峰分别为295和460 nm, 其还具有较强的紫外吸收特性; 棒长约为50~60 nm, (100)取向度为0.24的ZnWO₄纳米晶具有最佳的光催化性能.

关键词: 微波水热法, ZnWO₄, 形貌, 光催化性

Abstract: The Wolframite ZnWO₄ nanocrystallites were prepared by a facile, template-free microwave hydrothermal method using Na₂WO₄·2H₂O and Zn(COOCH₃)2·2H₂O as starting materials. The phase, morphology and optical properties of as-prepared samples were characterized by X-ray Diffraction (XRD), Transmission Electron Microscope (TEM), UV-Vis absorption spectra (UV-Vis) and photoluminescence spectroscopy (PL). Results indicate that ZnWO4 nanocrystallites have a preferential orientation growth along the (100) planes, and the morphology of ZnWO₄ nanocrystallites change into rodlike structure with the increase of microwave hydrothermal time. An intense blue PL emission with a 460 nm wavelength is observed when the as-prepared ZnWO₄ nanocrystallites are excited by a 295 nm wavelength, and they show a strong absorption in the ultraviolet region. The ZnWO₄ nanocrystallites whose orientation degree of (100) planes is 0.24 with the particle sizes of 50–60 nm show the best photocatalytic properties.

Key words: microwave hydrothermal method, ZnWO₄, morphology, photocatalysis

中图分类号:

TB32

张晓薇, 曹丽云, 黄剑锋, 刘一军, 李佳. 棒状ZnWO₄纳米晶的合成及其光催化性能[J]. 无机材料学报, 2012, 27(11): 1159-1163.

ZHANG Xiao-Wei, CAO Li-Yun, HUANG Jian-Feng, Liu Yi-Jun, LI Jia. Fabrication and Photocatalysis of Rod-like ZnWO₄ Nanocrystallites[J]. Journal of Inorganic Materials, 2012, 27(11): 1159-1163.

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棒状ZnWO₄纳米晶的合成及其光催化性能

Fabrication and Photocatalysis of Rod-like ZnWO₄ Nanocrystallites

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