Growth study and photocatalytic properties of Co-doped tungsten oxide mesocrystals
Growth study and photocatalytic properties of Co-doped tungsten oxide mesocrystals
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共掺杂氧化钨介晶的生长研究及光催化性能
DOI：
10.1016/j.matchar.2012.08.005
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发表时间：
2012-11
影响因子：
4.7
通讯作者：
Li, Zhenjiang
中科院分区：
文献类型：
--
作者：
Sun, Shibin;Chang, Xueting;Li, Zhenjiang
以六水合钨和氯化钴盐为前驱体，采用溶剂热法成功制备了不同形貌的钴掺杂氧化钨介晶。通过X射线衍射、场发射扫描电子显微镜、透射电子显微镜、Brunauer-Emmet-Teller氮吸附仪分析和紫外-可见漫反射光谱对所得介晶进行了表征。以模拟太阳光照射下降解水溶液中的甲基橙子为目标，研究了钴掺杂氧化钨介晶的光催化性能。结果表明，钴掺杂对最终产物的形貌有明显的影响，当钴掺杂量为1.0wt.%时，可以得到柱状和块状的钴掺杂氧化钨介晶和2.0wt.%钴掺杂。钴掺杂氧化钨的光催化活性比未掺杂氧化钨的光催化活性高出上级。
Cobalt-doped tungsten oxide mesocrystals with different morphologies have been successfully generated using a solvothermal method with tungsten hexachloride and cobalt chloride salts as precursors. The resulting mesocrystals were characterized by X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, Brunauer–Emmet–Teller analysis of nitrogen sorptometer, and UV–vis diffuse reflectance spectroscopy. The photocatalytic properties of the cobalt-doped tungsten oxide mesocrystals were evaluated on the basis of their ability to degrade methyl orange in an aqueous solution under simulated sunlight irradiation. Results showed that the cobalt doping had obvious effect on the morphologies of the final products, and lenticular and blocky cobalt-doped tungsten oxide mesocrystals could be obtained with 1.0wt.% and 2.0wt.% cobalt doping, respectively. The cobalt-doped tungsten oxides exhibited superior photocatalytic activities to that of the undoped tungsten oxide.
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