不同形貌WO3的水热合成及其在水处理中的应用研究

doi:10.7517/j.issn.1674-0475.2012.03.216

影像科学与光化学 ›› 2012, Vol. 30 ›› Issue (3): 216-227.DOI: 10.7517/j.issn.1674-0475.2012.03.216

不同形貌WO₃的水热合成及其在水处理中的应用研究

韩文梅^1,2, 贺军辉¹

1. 中国科学院理化技术研究所功能纳米材料实验室, 北京 100190;
2. 中国科学院研究生院, 北京 100049

收稿日期:2011-12-06 修回日期:2012-02-10 出版日期:2012-05-15 发布日期:2012-05-15
通讯作者: 贺军辉, E-mail: jhhe@mail.ipc.ac.cn.
基金资助:
国家自然科学基金(20871118);中国科学院光化学转化与功能材料重点实验室开放基金.

Hydrothermal Synthesis of Tungsten Trioxide with Different Morphologies and their Application in Water Treatment

HAN Wen-mei^1,2, HE Jun-hui¹

1. Functional Nanomaterials Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R. China;
2. Graduate University of Chinese Academy of Sciences, Beijing 100049, P.R.China

Received:2011-12-06 Revised:2012-02-10 Online:2012-05-15 Published:2012-05-15

摘要/Abstract

摘要： 三氧化钨(WO₃)以其较窄的带隙,成为继二氧化钛(TiO₂)之后颇具发展潜力的n型半导体光催化剂.本文采用水热合成法,通过调控反应参数,如原料组成、沉淀时间等,合成了不同形貌和晶型的WO₃;采用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、傅里叶变换红外光谱(FT-IR)、氮气吸附-脱附(N₂adsorption-desorption)等表征了所合成的WO₃产品,发现原料组成、沉淀时间等条件对WO₃的晶型和形貌都有影响;研究了所合成的WO₃产品去除水中亚甲基蓝染料污染物的性能,结果表明,所制备的WO₃对水中亚甲基蓝具有较好的去除效果,去除率可达97%.

关键词: WO₃, 水热合成, 亚甲基蓝, 催化降解

Abstract: Tungsten trioxide (WO₃) with narrow band gap, becomes a promising n-type semiconductor photocatalyst after titanium dioxide (TiO₂). In this work, WO₃nanostructures were synthesized by hydrothermal method. Different morphologies and crystalline structures could be obtained by tailoring reaction parameters, such as precursor composition and precipitation time,etc. The as-prepared WO₃ products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), and N₂ adsorption-desorption. The precursor composition and precipitation time were found to largely affect the morphology and crystalline structure of WO₃nanostructures. The obtained WO₃ products were applied for the removal of methylene blue in aqueous solution. It showed that all the obtained WO₃ nanostructures exhibited high activities for the removal of methylene blue, and 97 % of methylene blue could be removed.

Key words: WO₃, hydrothermal synthesis, methylene blue, catalytic degradation

中图分类号:

韩文梅, 贺军辉. 不同形貌WO₃的水热合成及其在水处理中的应用研究[J]. 影像科学与光化学, 2012, 30(3): 216-227.

HAN Wen-mei, HE Jun-hui. Hydrothermal Synthesis of Tungsten Trioxide with Different Morphologies and their Application in Water Treatment[J]. Imaging Science and Photochemistry, 2012, 30(3): 216-227.

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不同形貌WO₃的水热合成及其在水处理中的应用研究

Hydrothermal Synthesis of Tungsten Trioxide with Different Morphologies and their Application in Water Treatment

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