| 磷钨酸-草酸铵-二氧化钛三元混合体系光催化降解甲基橙的初步研究 |
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| 引用本文： | 郭新章,刘梦军.磷钨酸-草酸铵-二氧化钛三元混合体系光催化降解甲基橙的初步研究[J].孝感学院学报,2008,28(6). |
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| 作者姓名： | 郭新章 刘梦军 |
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| 作者单位： | 孝感学院化,学与材料科学学院,湖北,孝感,432000 |
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| 摘 要： | 以磷钨酸、草酸铵、二氧化钛三种物质组成三元混合光催化剂体系,用甲基橙为模拟污染物表征该体系的光催化降解活性.结果表明.磷钨酸、草酸铵和二氧化钛三种物质的组合,能产生良好的协同效应,形成一个光催化活性较高的催化剂体系.其活性与溶液pH值、各组分的质量比等因素有关.对于100 mL初始浓度为10 mg/L的甲基橙溶液,在pH=2.18,催化剂组分磷钨酸、草酸铵及二氧化钛用量分别为80 mg/L、200mg/L和350 mg/L时,光照100 min后,降解率达到99.21%.
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| 关 键 词： | 光催化降解 二氧化钛 磷钨酸 草酸铵 协同效应 |
Preliminary Study on Photocatalytic Degradation of Methyl Orange by Ternary Composite System of TiO_2/(NH_4)_2C_2O_4/Phospho-Tungstic Acid |
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| Guo Xinzhang,Liu Mengjun.Preliminary Study on Photocatalytic Degradation of Methyl Orange by Ternary Composite System of TiO_2/(NH_4)_2C_2O_4/Phospho-Tungstic Acid[J].JOURNAL OF XIAOGAN UNIVERSITY,2008,28(6). |
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| Authors: | Guo Xinzhang Liu Mengjun |
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| Institution: | Guo Xinzhang,Liu Mengjun(School of Chemistry , Materials Science,Xiaogan University,Xiaogan,Hubei 432000,China) |
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| Abstract: | The photocatalytic degradation activities of titanium dioxide composite system modified by phospho-tungstic acid/ammonium oxalate using methyl orange as model pollutant were studied.It was found that the ternary photocatalytic composite system shows a good synergy effect for catalytic degradation of methyl orange solutions,whose photocatalytic degradation activities is dependent on pH of solution,mass radio of component in the catalytic system.By the radiation of the high pressure mercury lamp for 100 minut... |
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| Keywords: | photocatalytic degradation titanium dioxide phospho-tungstic acid ammonium oxalate synergy effect |
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