| 醇水溶液体系中TiO2纳米晶的合成及其光催化性能 |
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| 引用本文： | 弓莹,张卫华,慕苗,高雯雯.醇水溶液体系中TiO2纳米晶的合成及其光催化性能[J].化学工程,2011,39(8):25-28. |
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| 作者姓名： | 弓莹 张卫华 慕苗 高雯雯 |
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| 作者单位： | 1. 榆林学院化学与化工学院,陕西榆林,719000
2. 西安理工大学材料科学与工程学院,陕西西安,710048 |
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| 基金项目： | 西安理工大学重点学科建设基金项目(101201712); 陕西省自然科学基金资助项目(2004E102); 榆林学院高层次人才科研启动基金项目(11GK38) |
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| 摘 要： | 采用液相方法在89℃下,通过在乙醇和水混合的TiOSO4溶液中滴加NaOH制备了平均尺寸为5nm的球形锐钛矿TiO2纳米晶,并对TiO2纳米晶进行了X射线表征(XRD)、透射电镜表征(TEM)、紫外-可见-近红外分光光度计表征.实验结果表明:醇水的体积比对于制备晶体是关键因素,乙醇可提高结晶度、细化晶粒,水的加入有利于...
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| 关 键 词： | TiO2纳米晶 醇水体积比 光催化 |
Synthesis of TiO_2 nano-crystalline with alcoholic solution and its photocatalyst activity |
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| GONG Ying,ZHANG Wei-hua,MU Miao,GAO Wen-wen.Synthesis of TiO_2 nano-crystalline with alcoholic solution and its photocatalyst activity[J].Chemical Engineering,2011,39(8):25-28. |
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| Authors: | GONG Ying ZHANG Wei-hua MU Miao GAO Wen-wen |
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| Affiliation: | GONG Ying1,ZHANG Wei-hua2,MU Miao1,GAO Wen-wen1(1.School of Chemistry and Chemical Engineering,Yulin University,Yulin 719000,Shaanxi Province,China,2.School of Materials Science and Engineering,Xi'an University of Technology,Xi'an 710048,China) |
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| Abstract: | Spherical anatase TiO2 nanocrystalline with an average size of 5 nm was prepared by titrating NaOH in the EtOH-H2O solution of TiOSO4 below 89 ℃ based on a liquid phase method.TiO2 nanocrystalline was characterized by XRD and TEM and ultraviolet-visible-near infrared spectrometer.The experimental result shows that the volume ratio of EtOH to H2O is the key for crystallinity of the particles,and alcohol can enhance the crystallinity and grain refinement,and the addition of water is helpful to the formation of nanocrystalline TiO2;prolonging the reaction time can increase the crystallinity of nanocrystalline TiO2;neutral environment can increase the crystallinity of nanocrystalline TiO2,and is helpful to the formation of nanocrystalline TiO2.Nanocrystalline TiO2 with higher crystallinity can be prepared under the condition of V(EtOH):V(H2O) = 100:150,the reaction time 8 h,pH=7,and the anatase TiO2 nanocrystalline appears a higher photoreactivity in the TiO2 photocatalysed methyl orange after heat treatment at 600 ℃. |
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| Keywords: | TiO2 nanocrystalline volume ratio of EtOH to H2O photocatalyst |
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