化工新型材料

化工新型材料 ›› 2022, Vol. 50 ›› Issue (9) : 129-133. DOI: 10.19817/j.cnki.issn1006-3536.2022.09.026

新材料与新技术

钒钼共掺杂TiO₂凝胶的相变研究

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Phase transformation of V⁵⁺and Mo⁶⁺ co-doped TiO₂ gel

Wang Yufei^1,2, Xu Chunxin^1,2, Liu Qianqian^1,2, Wang Xianjie^1,2, Yan Long^1,2, Li Jian^1,2, Chen Juan^1,2

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Received		Published
2021-06-10		2022-09-20
Issue Date	Revised Date
2022-09-27	2021-06-10

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摘要

考察了V⁵⁺、Mo⁶⁺共掺杂对TiO₂纳米粉体相变的影响,分析了不同煅烧温度下V⁵⁺、Mo⁶⁺共掺杂TiO₂粉体的晶体结构、晶粒尺寸,以及金红石相对含量的变化情况。结果表明,共掺杂TiO₂复合凝胶在350～420℃附近由非晶态向锐钛矿相转变;在煅烧温度为600℃左右时,TiO₂复合凝胶开始由锐钛矿向金红石相转变;共掺杂制备的TiO₂凝胶对锐钛矿向金红石的转化起到促进→抑制→促进的作用。

Abstract

V⁵⁺ and Mo⁶⁺ co-doped TiO₂ nanopowders were prepared by the sol-gel method.The effect of V⁵⁺ and Mo⁶⁺ co-doping on the phase transformation of TiO₂ gels,including the crystallization temperature,grain size and relative content of rutile,was investigated by TG-DTA,XRD technique.The results showed that the transformation temperature from gels to anatase of TiO₂ gels occurred at about 350～420℃,and the temperature from anatase to rutile occurred at about 600℃.The transformation of anatase to rutile by the phase transformation of nano-TiO₂ gel made by V⁵⁺ and Mo⁶⁺ co-doped with TiO₂ was promotion,inhibition and promotion.

关键词

二氧化钛 / 溶胶-凝胶 / 相变 / 材料 / V⁵⁺、Mo⁶⁺共掺杂

Key words

TiO₂ / sol-gel / phase transformation / material / V⁵⁺ and Mo⁶⁺ co-doping

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钒钼共掺杂TiO₂凝胶的相变研究[J]. 化工新型材料, 2022, 50(9): 129-133 DOI:10.19817/j.cnki.issn1006-3536.2022.09.026

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基金资助

国家自然科学基金(21663034);陕西省科技统筹创新工程计划项目(2016KTZDGY08-04-01);陕西省重点科技创新团队(2020TD-031);陕西省科技厅重点研发计划项目(2021GY-165);陕西省教育厅科研计划项目(2021JP148);陕西省教育厅产业化项目(20JC039);陕西省科技厅重点产业创新链项目(2021ZDLGY13-05)

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