| 溶液共存阳离子对CdS光催化降解罗丹明B性能的影响 |
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| 引用本文： | 王琼生,王世铭,王诣婧.溶液共存阳离子对CdS光催化降解罗丹明B性能的影响[J].福建师范大学学报(自然科学版),2009,25(6). |
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| 作者姓名： | 王琼生 王世铭 王诣婧 |
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| 作者单位： | 1. 福建师范大学化学与材料学院,福建,福州,350108
2. 华中师范大学化学学院,湖北,武汉,430079 |
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| 基金项目： | 福建省自然科学基金资助项目，福建省教育厅基金资助项目 |
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| 摘 要： | 采用水热方法制备了纳米硫化镉光催化剂.借助粉末X-射线衍射(XRD),固体紫外可见漫反射光谱(DRS)对合成产物进行了表征.以纳米CdS和本体CdS作为可见光的光催化剂,用难降解的离子型染料罗丹明B为探针分子,讨论了溶液常见的共存金属离子种类、质量分数对CdS光催化降解罗丹明B的影响.结果表明:共存离子Cu2+对CdS光催化降解罗丹明B起抑制作用,Ag+对CdS光催化降解罗丹明B没有显著影响,而共存离子Fe3+ 和Pr3+ 能显著地提高纳米、本体CdS光催化剂降解罗丹明B的降解速率,最佳的离子质量分数分别为催化剂用量的0.5% 和10%.
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| 关 键 词： | 纳米硫化镉 光催化 罗丹明B 金属离子 |
Effect of Several Cations on CdS Photocatalytic Degradation Rhodamine B |
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| WANG Qiong-sheng,WANG Shi-ming,WANG Yi-jing.Effect of Several Cations on CdS Photocatalytic Degradation Rhodamine B[J].Journal of Fujian Teachers University(Natural Science),2009,25(6). |
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| Authors: | WANG Qiong-sheng WANG Shi-ming WANG Yi-jing |
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| Institution: | WANG Qiong-sheng1,WANG Shi-ming1,WANG Yi-jing2(1.College of Chemistry and Materials Science,Fujian Normal University,Fuzhou 350108,China,2.College of Chemistry,Huazhong Normal University,Wuhan 430079,China) |
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| Abstract: | Nano-crystal CdS photocatalyst was prepared by hydrothermal method.The product was characterized by X-ray diffraction(XRD) and UV-Vis diffused reflectance spectroscopy(DRS).The effects of the variety of co-existing ions and concentration of ions on photodegradation of Rhodamine B(RhB) were investigated under the conditions of the nano-crystal CdS and bulk CdS as the visible-light photocatalyst and RhB as a molecule Probe.The results show that the co-existing ion Cu2+ was found to inhibit the activity of pho... |
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| Keywords: | nano-crystal CdS photocatalysis Rhodamine B metal cation |
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