| 水热界面反应制备二氧化钛空心微球 |
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| 引用本文： | 展红全,江向平,李小红,罗志云,罗凌虹.水热界面反应制备二氧化钛空心微球[J].中国陶瓷,2011(11). |
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| 作者姓名： | 展红全 江向平 李小红 罗志云 罗凌虹 |
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| 作者单位： | 景德镇陶瓷学院材料科学与工程学院江西省先进陶瓷材料重点实验室; |
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| 基金项目： | 国家自然科学基金重大研究计划(No.91022027);国家自然科学基金(No.50862005、51062005) |
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| 摘 要： | 采用水热法,在油酸/水/乙醇体系中,钛酸四丁酯前驱体分解团聚得到具有空心结构的TiO2微球。利用扫描电子显微镜(SEM)、X射线衍射(XRD)、N2吸附脱附(BET)对样品进行表征,并通过对甲基橙的紫外光催化降解评价样品的光催化性能。结果表明该空心微球为锐钛相,粒径约为1～2μm,随着时间的延长其结晶性增强。BET结果显示该空心微球具有较大的比表面积300.20m2.g-1,内部颗粒之间形成介孔结构。利用SEM研究了该空心微球的生长特点和生长机理,结果表明钛酸四丁酯在油水界面反生分解缩聚反应,然后经过由内向外的Ostwald ripening(OR)过程得到空心微球,通过调节水油的比例可以调控微球的形貌和粒径。光催化性能测试表明这种空心微球结构的TiO2材料具有较高的催化活性。
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| 关 键 词： | 无机非金属材料 空心微球 水热法 TiO2 光催化 |
HYDROTHERMAL INTERFACIAL SYNTHESIS OF HOLLOW TITANIA MICROSPHERE |
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| Zhan Hongquan,Jiang Xiangping,Li Xiaohong,Luo Zhiyun,Luo Linghong.HYDROTHERMAL INTERFACIAL SYNTHESIS OF HOLLOW TITANIA MICROSPHERE[J].China Ceramics,2011(11). |
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| Authors: | Zhan Hongquan Jiang Xiangping Li Xiaohong Luo Zhiyun Luo Linghong |
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| Affiliation: | Zhan Hongquan,Jiang Xiangping,Li Xiaohong,Luo Zhiyun,Luo Linghong(Department of Material Science and Engineering,Jingdezhen Ceramic Institute Jiangxi Key Laboratory of Advanced Ceramic Materials,Jingdezhen 333001) |
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| Abstract: | Hollow TiO2 microsphere were successfully synthesized in the oleic acid/water/ethanol solutions by hydrothermal treatment using tetrabutyl titanate as reactants.The obtained TiO2 spheric materials were characterized by scanning electron microscope(SEM),X-ray diffraction(XRD),N2 adsorption-desorption(BET).The ultraviolet photocatalytic activity of the samples was evaluated by decomposing methyl orange aqueous solution.The results show that the obtained samples are uniform anatase TiO2 spheres with diameter a... |
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| Keywords: | Inorganic non-metallic materials hollow sphere hydrothermal method TiO2 photocatalysis |
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