| 水热法制备TiO_2-硅藻土复合材料及其光催化性能(英文) |
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| 引用本文： | 方培育,吴建青,张京涛,吕明.水热法制备TiO_2-硅藻土复合材料及其光催化性能(英文)[J].功能材料与器件学报,2010,16(1). |
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| 作者姓名： | 方培育 吴建青 张京涛 吕明 |
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| 作者单位： | 华南理工大学材料科学与工程学院,特种功能材料教育部重点实验室,中国,广州,510640 |
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| 基金项目： | 粤港关键领域重点突破招标项目，广东省科技计划项目，广东省自然科学基金自由申请项目 |
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| 摘 要： | 以水热法、用钛酸丁酯和二乙醇胺为原料、在160℃保温4小时合成了TiO2纳米颗粒。在pH值约为2时通过静电吸引把TiO2涂覆在硅藻土表面形成TiO2-硅藻土复合材料,并用透射电镜(TEM)、扫描电镜(SEM)、X-射线衍射(XRD)和差热示差扫描量热仪(DSC)研究了其性能。TiO2是近正方形的、分散良好的锐钛矿晶体,其颗粒大小约为15nm。TiO2均匀的、牢固的附着在硅藻土的表面上,其TiO2/硅藻土质量比为1:10。TiO2-硅藻土复合材料具有良好的光催化性能,在紫外光照射下100g复合材料用3h可使10ml浓度为20mg/L的甲基橙水溶液完全降解。
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| 关 键 词： | 复合材料 二氧化钛 水热法 光催化性能 硅藻土 |
Preparation and photocatalytic performance of TiO_2-mounted diatomite composites by a hydrothermal method |
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| FANG Pei-yu,WU Jian-qing,ZHANG Jing-tao,Lü Ming.Preparation and photocatalytic performance of TiO_2-mounted diatomite composites by a hydrothermal method[J].Journal of Functional Materials and Devices,2010,16(1). |
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| Authors: | FANG Pei-yu WU Jian-qing ZHANG Jing-tao Lü Ming |
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| Abstract: | TiO_2 nanoparticles were hydrothermally synthesized at 160℃ for 4h using tetrabutyl titanate and diethanolamine. TiO_2-diatomite composites were prepared by coating TiO_2 sol on diatomite at pH value of ca. 2. TiO_2 and its composites were investigated by transmission electron microscope(TEM), scanning electron microscope (SEM), X-ray diffraction (XRD) and differential scanning calorimetry (DSC).TiO_2 was anatase-type, near square and dispersive in the size of about 15nm. TiO_2 was mounted uniformly with TiO_2/diatomite mass ratio of 1 : 10 on the diatomite with strong bonds. TiO_2-diatomite composites owned good photocatalytic performance to decolorize methyl orange. 10ml of 20mg/L aqueous methyl orange was decolorized by 100rag TiO_2-diatomite composites in 3h under UV light irradiation. |
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| Keywords: | composite materials titania hydrothermal method photocatalysis diatomite |
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