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| 溶胶-凝胶法制备TiO2/SiO2复合材料光催化降解罗丹明B | |
| 引用本文： | 葛金龙,燕配配,于巧银,修利梅. 溶胶-凝胶法制备TiO2/SiO2复合材料光催化降解罗丹明B[J]. 云南民族大学学报(自然科学版), 2012, 21(1): 22-25 |
| 作者姓名： | 葛金龙 燕配配 于巧银 修利梅 |
| 作者单位： | 1. 蚌埠学院应用化学与环境工程系,安徽蚌埠,233030 2. 玉溪农业职业技术学院计科系,云南玉溪,653106 |
| 基金项目： | 安徽省高等学校自然科学基金(KJ2011B091) |
| 摘 要： | 采用溶胶-凝胶法以钛酸四丁酯、正硅酸四乙酯制备了TiO2/SiO2复合材料,利用XRD对复合材料的物相结构进行了表征,表明制备的TiO2/SiO2复合材料为锐钛矿型.FTIR表明复合材料形成了Si—O—Ti的网络结构,TG-DTA表明复合材料的热性能提高.以罗丹明B为降解物,探讨了该复合材料的光催化活性,考察了固液比、pH值、时间对降解效果的影响,结果表明,TiO2/SiO2复合材料对罗丹明B降解率明显高于纯TiO2,当固液比为6g/L、pH为6、降解时间为120min时降解率可达到94.59%. |
| 关 键 词： | TiO2/SiO2复合材料 罗丹明B 溶胶-凝胶法 降解率 |
Sol-Gel Synthesis and Photo-Catalytic Property of TiO2/SiO2 Composites |
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| GE Jin-long , YAN Pei-pei , YU Qiao-yin , XIU Li-mei. Sol-Gel Synthesis and Photo-Catalytic Property of TiO2/SiO2 Composites[J]. Journal of Yunnan Nationalities University:Natural Sciences Edition, 2012, 21(1): 22-25 | |
| Authors: | GE Jin-long YAN Pei-pei YU Qiao-yin XIU Li-mei |
| Affiliation: | (Department of Applied Chemistry and Environmental Engineering,Bengbu College,Bengbu 233000,China) |
| Abstract: | TiO2/SiO2 composites were synthesized by sol-gel method and characterized by TG-DTA,XRD,FTIR,The structural phase of TiO2/SiO2 composites was anatase.Rhodamine B was choosen as the model pollutant to explore the photocatalytic activity,solid-liquid rate,pH value,as well as time as the main factor influencing the photocatalytic degradation rate.The results indicated that the TiO2/SiO2 composites’ degradation rate of rhodamine B was obviously higher than TiO2.The optimum reaction conditions are as follows: solid-liquid rate of 6g/L、pH of 6,time of 120min,degradation rate of rhodamine B reached as high as 94.59%. |
| Keywords: | TiO2/SiO2 composites Rhodamine B sol-gel degradation rate |
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