| 新型Ag2WO4光催化剂的合成及其催化性能研究 |
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| 引用本文： | 李小虎,王文山.新型Ag2WO4光催化剂的合成及其催化性能研究[J].延安大学学报(自然科学版),2013(4):55-58. |
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| 作者姓名： | 李小虎 王文山 |
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| 作者单位： | [1]延安大学西安创新学院,陕西西安710100 [2]延安大学化学与化工学院,陕西延安716000 |
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| 摘 要： | 采用水热合成法，以硝酸银和钨酸钠为起始原料，成功制备了Ag2WO4光催化剂。借助X射线衍射（XRD）、紫外光谱（uV—Vis）等测试技术对样品相组成和吸收特性进行表征。同时考察了Ag2WO4光催化剂对甲基橙溶液的光催化降解活性，研究了光照时间对甲基橙溶液降解率的影响。XRD分析结果表明，所得样品为单聚体的Ag2WO4，属于四方晶系，空间群为Pn2n，且样品的纯度较高。吸收光谱表明在200nm～400nm波长范围内有较强的吸收。A勘WO。对甲基橙溶液具有较好的光催化活性，且光源对活性影响显著。
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| 关 键 词： | 水热合成法 Ag2WO4 光催化活性 |
Synthesis and Photocatalytic Activity of A Novel Photocatalyst Ag2 WO4 |
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| LI Xiao-hu,WANG Wen-shan.Synthesis and Photocatalytic Activity of A Novel Photocatalyst Ag2 WO4[J].Journal of Yan'an University(Natural Science Edition),2013(4):55-58. |
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| Authors: | LI Xiao-hu WANG Wen-shan |
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| Institution: | 1. Xian Innovation College of Yanan University,Xian 710100,China; 2. College of Chemistry ＆ Chemical Engineering, Yanan University, Yanan 716000, China) |
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| Abstract: | Ag2WO4 photocatalyst was successfully synthesized via a aqueous precipitation process using AgNO3 and NaWO4 as raw materials. The obtained sample was characterized by X - ray diffraction （XRD） and solid - UV - Vis techniques. Photodegradation of Methyl Orange （ MO ） was studied with Ag2 WO4 under experiment light recourse of xeon lamp and high press mercury lamp. The XRD result showed that the sample Ag2WO4 synthesized in a high purity belongs to tetragonal and space group is Pn2n. UV - Vis spectrum showned that the sample has a strong ab- sorption between 200 nm and 400 nm. The photodegradation experiment showed that MO was more easily photodeg- radated with Ag2WO4 and simulated sunlight. |
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| Keywords: | hydrothermal process silver tungstate photocatalytic activity |
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