杨向,徐立,王晶,刘辉,朱晓东

• 1:成都大学机械工程学院

摘要(Abstract)：

采用溶胶凝胶法制备了纯TiO_2以及锡掺杂、镍掺杂、锡/镍共掺杂TiO_2并对其进行了480℃和680℃保温1 h热处理,研究了掺杂对锐钛矿/金红石相变,以及对TiO_2晶粒尺寸的影响。结果表明纯TiO_2在480℃为锐钛矿,680℃为金红石,在这个温度区间内完成了锐钛矿向金红石相变。镍掺杂阻碍了相变,锡掺杂促进了相变。当锡/镍摩尔比为1∶3,1∶1时整体表现为抑制作用,3∶1时,锡的促进与镍的抑制作用几乎抵消,对相变无明显影响。掺杂后样品的晶粒尺寸都明显减小。SEM测试结果表明掺杂对颗粒形貌影响不大,温度升高,颗粒团聚程度增加。

关键词(KeyWords)： 锡镍共掺杂TiO2;热处理;锐钛矿/金红石相变;晶粒尺寸

Abstract:

Keywords:

基金项目(Foundation): 四川省科技厅应用基础研究项目（2019YJ0664）;; 成都大学教学改革项目(cdjgb2017103）;成都大学大学生创新训练计划孵化培育项目(CDU_CX_2019015;CDU_CX_2019020)

作者(Author): 杨向,徐立,王晶,刘辉,朱晓东

DOI: 10.16521/j.cnki.issn.1001-9642.2019.10.006

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