| 利用综合热分析仪研究纳米二氧化钛凝胶的热稳定性 |
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| 引用本文： | 邓晓燕.利用综合热分析仪研究纳米二氧化钛凝胶的热稳定性[J].现代科学仪器,2010(3):106-110. |
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| 作者姓名： | 邓晓燕 |
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| 作者单位： | 青岛科技大学环境与安全学院,山东,青岛,266042;中国海洋大学海洋化学理论与工程技术教育部重点实验室,山东青岛,266100 |
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| 摘 要： | 以TiCl4为原料,分别以Cr(NO3)3、Fe(NO3)3和Al(NO3)3为掺杂剂,采用共沉淀制备了含不同掺杂剂和掺杂量的纳米二氧化钛凝胶,利用综合热分析仪(热重分析一差示扫描量热联用仪,简称DSC-TG)研究了纳米二氧化钛凝胶从30-1100℃热稳定性以及组分和物相的变化,XRD测定了二氧化钛凝胶在煅烧过程中晶型转变。结果表明:含不同掺杂剂和不同掺杂量凝胶的DSC-TG曲线有很大的差别;Cr3+和Fe3+掺杂能促进金红石相的形成,Al3+掺杂有利于锐钛矿相的稳定。
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| 关 键 词： | 纳米二氧化钛 离子掺杂 热稳定性 DSC曲线 TG曲线 |
Research on Thermal Stability of Nano-TiO2 Gel by DSC-TG |
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| Deng Xiaoyan.Research on Thermal Stability of Nano-TiO2 Gel by DSC-TG[J].Modern Scientific Instruments,2010(3):106-110. |
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| Authors: | Deng Xiaoyan |
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| Affiliation: | Deng Xiaoyan(1College of Environment and Safety Engineering, Qingdao University of Science ＆ Technology, Qingdao Shandong 266042; 2 Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, Shandong, 266100) |
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| Abstract: | Ion doping Nano-TiO2 gels were synthesized by co-precipitation method from TiCl4 and M（NO3）3（M= Cr3＋,Fe3＋ and Al3＋）. DSC and TG techniques were usded to study the changes of TiO2 gels compositions and phases from 30°C to 1100°C. The phase transitions from anatase to rutile were examined by XRD. The results show that the effects of doping of Cr3＋, Fe3＋ and Al3＋ on thermal stability and phase transition of Nano-TiO2 gel are different. The doped Cr3＋ and Fe3＋ can effectively expedite the phase transformation from anatase to rutile but Al3＋ can restrain. |
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| Keywords: | Nano-TiO2 gel Ion doping thermal stability DSC curves TG curves |
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