| 钛柱撑蒙脱石光催化降解亚甲基蓝的实验研究 |
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| 引用本文： | 王丽娟,廖立兵,韩琳.钛柱撑蒙脱石光催化降解亚甲基蓝的实验研究[J].矿物岩石,2007,27(1):18-22. |
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| 作者姓名： | 王丽娟 廖立兵 韩琳 |
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| 作者单位： | 中国地质大学材料科学与工程学院,北京,100083 |
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| 基金项目： | 北京市自然科学基金项目（No.2022017） |
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| 摘 要： | 采用TiCl4水解法制备钛柱化剂与钠蒙脱石离子交换后,自然风干、焙烧得到具有稳定层结构、大晶面间距(2.26 nm)和大比表面积(285.7 m2/g)的钛柱撑蒙脱石(Ti-PILM)。用制备的Ti-PILM对亚甲基蓝(MB)进行紫外光作用下的光催化降解实验,并与层结构不规则的Ti-PILM在相同条件下对MB的光催化效果进行对比,研究MB的初始浓度、Ti-PILM投放量、pH对光催化降解效果的影响。结果表明,室温条件下,降解时间120 min,当Ti-PILM投样量等于2 g/L,MB初始浓度为50 mg/L,pH为7时,Ti-PILM对MB降解速度最高。与纳米TiO2不同,Ti-PILM对MB的降解率和降解初速率与MB在其表面的吸附行为密切相关。
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| 关 键 词： | 钛柱撑蒙脱石 光催化 亚甲基蓝 |
| 文章编号： | 1001-6872（2007）01-0018-05 |
| 修稿时间： | 2006-10-15 |
PHOTOCATALYTIC DEGRADATION OF METHYLENE BLUE BY TITANIUM PILLARED MONTMORILLONITE |
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| WANG Li-juan,LIAO Li-bing,HAN Lin.PHOTOCATALYTIC DEGRADATION OF METHYLENE BLUE BY TITANIUM PILLARED MONTMORILLONITE[J].Journal of Mineralogy and Petrology,2007,27(1):18-22. |
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| Authors: | WANG Li-juan LIAO Li-bing HAN Lin |
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| Institution: | School of Materials Science and Engineering, China University of Geosciences,Beijing 100083,China |
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| Abstract: | Titanium pillared montmorillonite(Ti-PILM) with stable structure,large basal spacing,large specific surface area of 285.7 m2/g and mespore diameter was synthesized by cation exchange of sodium montmorillonite with Ti-polymeric cations prepared by partial hydrolysis of TiCl4 in HCl.The photocatalytic degradation of methylene blue(MB) under ultraviolet light has been conducted with the prepared Ti-PILM.The effects of Ti-PILM dosage,MB initial concentration and the pH value on the efficiency of photocatalytic degradation of MB were studied and compared to that of Ti-PILM with no regular layer structure.Results show that Ti-PILM is very efficient in the photocatalytic degradation of MB.High adsorption ability to MB,a main character of Ti-PILM compared to nano-TiO2,takes responsibility.Structure regularity of Ti-PILM affects the photocatalytic degradation efficiency of MB to some extent. |
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| Keywords: | Ti-PILM photocatalyst methylene blue |
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