| 圆饼状Bi2WO6晶体的水热合成和光催化性能 |
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| 引用本文： | 刘国聪.圆饼状Bi2WO6晶体的水热合成和光催化性能[J].惠州大学学报,2013(6):5-11. |
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| 作者姓名： | 刘国聪 |
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| 作者单位： | [1]惠州学院新材料研发和化学生物传感技术所,广东惠州516007 [2]惠州学院化工技术开发中心,广东惠州516007 |
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| 基金项目： | 基金项目：广东省高等学校人才项目[（粤财教2012）41,2050205];广东省自然科学基金项目（S2012010009632）;惠州市科技项目（2012P09）;惠州学院优秀人才资助项目 |
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| 摘 要： | 以硝酸铋Bi（NO3）3·5H2O]和钨酸钠（Na2WO4·2H2O）为原料，采用十六烷基三甲基溴化铵（CTAB）辅助水热法成功合成了B2WO6晶体，并用XRD、SEM、IR、Raman、UV—vis分光光度计对样品进行了表征。测试结果表明，样品呈圆饼状形貌，属于正交晶系B2WO6晶体，平均晶粒尺寸约89．5nm。样品可见光降解罗丹明溶液（1×10^-5moL／L）表现为准一级反应，其反应速率常数为0．03111min^-1，光照60min时的光降解率可达91．6％。
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| 关 键 词： | 水热合成 圆饼Bi2WO6晶体 罗丹明B 光催化性能 |
Hydrothermal Synthesis and Photocatalytical Performance of Cake-like Bi2WO6 Microcrystals |
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| LIU Guo-cong.Hydrothermal Synthesis and Photocatalytical Performance of Cake-like Bi2WO6 Microcrystals[J].Journal of Huizhou University,2013(6):5-11. |
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| Authors: | LIU Guo-cong |
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| Institution: | LIU Guo-cong( 1. Institute of Advanced Materials ＆ Chembiosensing Technology, Huizhou University, Huizhou 516007, Guangdong China ; 2. Centre of Chemical Engineering Technology, Huizhou University, Huizhou 516007, China) |
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| Abstract: | Using Bi（ NO3 ）3·5H2O and Na2WO4·2H2O as raw materials, cake-like Bi2WO6 microcystals were synthesized via a CTAB-assisted hydrothermal process. The as-prepared products were characterized by XRD,SEM,IR,Raman and UV-vis. The results reveal that the samples possess the shape of cake and belong to orthorhombic structure Bi2WO6 with an average grain size of 89.5 nm. Bi2WOs microcake exhibit the pseudo first order kinetics for photodegradating rhodamine B （RhB） solution （1×10^-5 mol/L） ,and its photodegradation rate constant k is 0. 03111 min-1. A good photocatalytic activity is found with a 91.6 % degradation of RhB under visible-light irradiation for 60 min. |
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| Keywords: | Hydrothermal synthesis cake-like Bi2 WO6 crystal rhodamine B photocatalytic properties |
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