| 纳米TiO2的制备、表征及其表面光电性能研究 |
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| 引用本文： | 寇瑾,彭鲲,牛淑云. 纳米TiO2的制备、表征及其表面光电性能研究[J]. 辽宁师范大学学报(自然科学版), 2009, 32(2): 218-221 |
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| 作者姓名： | 寇瑾 彭鲲 牛淑云 |
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| 作者单位： | 辽宁警官高等专科学校,公安技术系,辽宁,大连,116036;大窑湾出入境检验检疫局,辽宁,大连,116600;辽宁师范大学,化学化工学院,辽宁,大连,116029 |
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| 基金项目： | 国家自然科学基金，辽宁省教委创新团队项目 |
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| 摘 要： | 采用均匀沉淀和直接沉淀2种方法合成了纳米TiO2，对所得产物进行了透射电镜和粒度分布的测试．结果表明：均匀沉淀法制备的纳米TiO2粒度分布均匀，团聚少，并且粒径较小，大约在20nm左右，基本呈球形；直接沉淀法制备的纳米TiO2粒度分布不够均匀，团聚现象比较严重，有较大颗粒存在，粒径在40nm左右，近似呈球形．对均匀沉淀法制得的TiO2前驱物采用不同的灼烧温度和灼烧时间，得到了不同晶型和粒径的TiO2粉体．对相同灼烧温度、不同灼烧时间的TiO2进行了XRD测试．并从均匀沉淀法制备的不同粒径的金红石型纳米TiO2中选取3种不同粒径的样品，进行了表面光电压测试和分析．
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| 关 键 词： | 纳米TiO2 均匀沉淀法 表征 表面光电压 |
Preparation, characterization and surface photovoltage of nano-structural TiO2 |
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| KOU Jin,PENG Kun,NIU Shu-yun. Preparation, characterization and surface photovoltage of nano-structural TiO2[J]. Journal of Liaoning Normal University(Natural Science Edition), 2009, 32(2): 218-221 |
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| Authors: | KOU Jin PENG Kun NIU Shu-yun |
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| Affiliation: | KOU Jin , PENG Kun , NIU Shu-yun ( 1. Police Technology Department, Liaoning Police Academy, Dalian Liaoning 116036, China; 2. Dayaowan Entry＆Exit Inspection And Quarantine Bureau, Dalian Liaoning l16600,China; 3. School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029,China) |
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| Abstract: | Nano-TiO2 powder was synthesized by the direct and homogeneous deposition methods. These methods were compared and the reaction condition of the homogeneous precipitation method was investigated. The nano-TiO2 was characterized by TEM and granularity distribution. The results showed that the granularity of nano-TiO2 prepared by homogeneous deposition method is uniform spherical and few reunited. The granularity is about 20 nm. While the granularity of nano-TiO2 by direct deposition method is not uniform nearly spherical and much reunited. The dimension of it is about 40 nm. The surface photovoltage spectra were studied and reasonably explained. |
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| Keywords: | nanostructure homogeneous deposition method characterization surface photovoltage |
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