| 颜料红254-TiO_2光催化降解罗丹明B废水 |
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| 引用本文： | 张召娟,李长海,商希礼,李跃金.颜料红254-TiO_2光催化降解罗丹明B废水[J].环境工程学报,2014,8(6):2335-2341. |
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| 作者姓名： | 张召娟 李长海 商希礼 李跃金 |
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| 作者单位： | 1. 长春工业大学化工学院, 长春 130012;1. 长春工业大学化工学院, 长春 130012;2. 滨州学院化学工程系, 滨州 256603;2. 滨州学院化学工程系, 滨州 256603;2. 滨州学院化学工程系, 滨州 256603 |
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| 基金项目： | 国家自然科学基金资助项目（21276027）；山东省高等学校科研计划项目（J12L64）；滨州市科技发展计划项目（2013ZC1602） |
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| 摘 要： | 以工业有机颜料C.I.颜料红254(DPP254)为敏化剂,通过溶剂热法对纯TiO2进行改性,得到复合光催化剂DPP254-TiO2。并通过XRD、SEM、UV-Vis DRS和N2吸附-脱附(BET和BJH)等测试手段对DPP254-TiO2进行了表征。以罗丹明B(RhB)为目标降解物,研究了DPP254-TiO2在可见光下对有机污染物的光催化降解性能。同时考察了DPP254含量、反应时间、RhB初始浓度和催化剂浓度等因素对RhB降解速率的影响。结果表明,改性后的催化剂光响应范围由紫外光区拓宽到可见光区。对其光催化反应机理进行了探讨。催化剂重复使用4次,活性没有明显降低,说明催化剂具有很好的稳定性。
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| 关 键 词： | TiO 光催化 罗丹明B |
Photocatalytic degradation of Rhodamine B wastewater by Pigment Red 254-TiO2 catalysit |
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| Zhang Zhaojuan,Li Changhai,Shang Xili and Li Yuejin.Photocatalytic degradation of Rhodamine B wastewater by Pigment Red 254-TiO2 catalysit[J].Techniques and Equipment for Environmental Pollution Control,2014,8(6):2335-2341. |
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| Authors: | Zhang Zhaojuan Li Changhai Shang Xili and Li Yuejin |
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| Institution: | 1. School of Chemical Engineering, Changchun University of Technology, Changchun 130012, China;1. School of Chemical Engineering, Changchun University of Technology, Changchun 130012, China;2. Department of Chemical Engineering, Binzhou University, Binzhou 256603, China;2. Department of Chemical Engineering, Binzhou University, Binzhou 256603, China;2. Department of Chemical Engineering, Binzhou University, Binzhou 256603, China |
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| Abstract: | A TiO2 photocatalyst sensitized with commercial organic Pigment Red 254 was conveniently prepared by solvothermal method and characterized by SEM, XRD, UV-Vis DRS and N2 adsorption-desorption isotherms. The adsorption capacities and photocatalytic activities of DPP254-TiO2 were evaluated by photocatalytic degradation Rhodamine B under visible light irradiation. The results indicated that the new photocatalyst extends the photoresponse from UV to the visible region. The amount of DPP254, reaction time, the initial concentration of Rhodamine B and the dosage of catalyst were investigated and the mechanism of action was also discussed. Photocatalytic activity of DPP254-TiO2 is reproducible which demonstrates excellent stability and recyclability factors. |
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| Keywords: | TiO2 photocatalysis Rhodamine B |
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