WO3·0.33H2O nanoplates: Hydrothermal synthesis, photocatalytic and gas-sensing properties
WO3·0.33H2O nanoplates: Hydrothermal synthesis, photocatalytic and gas-sensing properties
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DOI：
10.1016/j.matlet.2012.06.078
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发表时间：
2012-10
影响因子：
3
通讯作者：
Xiaoqing Gao;Chao Yang;Feng Xiao;Ying Zhu;Jide Wang;Xintai Su
中科院分区：
文献类型：
--
作者：
Xiaoqing Gao;Chao Yang;Feng Xiao;Ying Zhu;Jide Wang;Xintai Su
以对硝基苯甲酸为结构导向剂，采用水热法合成了WO 3·0.33H2O纳米片。采用X射线衍射（XRD）和扫描电镜（SEM）对产物进行了表征。SEM结果表明，产物为六方结构，横向尺寸为500- 1000 nm，厚度约为80 nm。XRD结果表明，产物为正交晶系的WO 3·0.33H2O。研究了WO 3·0.33H2O纳米片的光催化和气敏性能。该产物在紫外光照射下对亚甲基蓝（MB）有很高的降解活性，对环己烯有很高的灵敏度。这种简单的制备方法和由片状纳米结构所带来的性能的改善对功能纳米材料的合成和未来的应用具有重要意义。
WO3·0.33H2O nanoplates have been synthesized with p-nitrobenzoic acid as a structure-directing agent through a facile hydrothermal method. The obtained products were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The SEM results showed that most of the products had a hexagonal morphology with a lateral size of 500–1000nm and a thickness of ∼80nm. The XRD result showed that the products were orthorhombic WO3·0.33H2O. The photocatalytic and gas-sensing properties of the WO3·0.33H2O nanoplates were studied. The products exhibited a high degradation activity for methylene blue (MB) under ultraviolet light irradiation, and a high sensitivity to cyclohexene. The facile preparation method and the improved properties derived from the plate-shaped nanostructures are significant in the synthesis and future applications of functional nanomaterials.