Growth kinetics and growth process control of nanocrystalline TiO2 anatase
文献类型：期刊论文
| 作者 | Hu LH(胡林华) ; Dai J(戴俊); Liu WQ(刘伟庆); Wang KJ(王孔嘉); Dai SY(戴松元)
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| 刊名 | ACTA PHYSICA SINICA
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| 出版日期 | 2009 |
| 卷号 | 58 |
| 关键词 | SOLAR-CELL PERFORMANCE RUTILE nanocrystalline TiO2 anatase growth kinetics sol-gel |
| ISSN号 | 1000-3290 |
| 其他题名 | Growth kinetics and growth process control of nanocrystalline TiO_2 anatase |
| 英文摘要 | Structural transformation of nanocrystalline titania prepared by sol-gel process with hydrolysis precursor titanium isopropoxide was investigated. The growth kinetics of TiO2 anatase was also studied. It is found that under acid conditions, the activation energies for the growth of anatase below and above 250 degrees C are ( 15.8 +/- 4.5) kJ/mol and (80.2 +/- 1.0) kJ/mol, respectively, which is due to the structural transformation from anatase to rutile resulting from the increasing temperature during the autoclave heating process. Under base conditions, the activation energy of anatase growth is (3.5 +/- 0.4) kJ/mol. The growth of anatase under acid conditions is slower than that under base conditions without phase transformation. That is, the growth of anatase becomes significant At higher temperature under acid conditions, whereas under base conditions, the crystallite growth is obviously accelerated by the longer autoclaving time. The above research results will contribute to realize the control of TiO2 nanoparticle size and will also provide us the theoretical and experimental bases for the mass production of TiO2 nanoparticles in the future. |
| 资助项目 | [State Key Development Program for Basic Research of China] ; [National Natural Science Foundation of China] ; [Key Technologies Research and Development Program of Anhui Province, China] |
| 语种 | 英语 |
| CSCD记录号 | CSCD:3510496 |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/47832]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 作者单位 | 中国科学院合肥物质科学研究院 |
| 推荐引用方式 GB/T 7714 | Hu LH,Dai J,Liu WQ,et al. Growth kinetics and growth process control of nanocrystalline TiO2 anatase[J]. ACTA PHYSICA SINICA,2009,58. |
| APA | 胡林华,戴俊,刘伟庆,王孔嘉,&戴松元.(2009).Growth kinetics and growth process control of nanocrystalline TiO2 anatase.ACTA PHYSICA SINICA,58. |
| MLA | 胡林华,et al."Growth kinetics and growth process control of nanocrystalline TiO2 anatase".ACTA PHYSICA SINICA 58(2009). |
入库方式： OAI收割
来源：合肥物质科学研究院
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