摘要
采用溶胶凝胶法制备了纯TiO2以及不同浓度Zn掺杂TiO2纳米粉末。利用XRD、SEM和XPS等对其进行了表面形貌、晶体结构、元素组成与价态研究。讨论了Zn掺杂浓度对TiO2锐钛矿/金红石相变的影响。结果表明：纯TiO2在300℃时为锐钛矿,在500℃时出现少许金红石,750℃时全部为金红石;Zn掺杂能细化晶粒并且能促进锐钛矿向金红石的转变,增大Zn掺杂浓度以及提高热处理温度有利于ZnTiO3的生成。
Pure TiO2 and Zn doped TiO2 nanopowders with different amounts of Zn were prepared by sol-gel method. The surface morphology, crystal structure, element composition and chemical state of the prepared samples were characterized by XRD, SEM and XPS, respectively. The effects of Zn doping concentration on the anatase/rutile phase transformation were discussed. The results show that pure TiO2 is anatase at 300 ℃, and a small amount of rutile appear at 500 ℃, and all the phase is rutile at 750 ℃. The Zn doping can refine the grain size and promote the phase transition of anatase to rutile.Increasing Zn doping concentration and heat treatment temperature are beneficial for the generation of ZnTiO3.
作者
冯威
朱晓东
裴玲秀
易倩
文桂岚
FENG Wei1, ZHU Xiaodong1;, PEI Lingxiu1, YI Qian1, WEN Guilan1(1. College of Mechanical Engineering, Chengdu University, Chengdu 610106, China; 2. College of Materials and Chemistry ＆ Chemical Engineering, Chengdu University of Technology, Chengdu 610059, Chin)
出处
《热加工工艺》
CSCD
北大核心
2018年第14期27-30,34,共5页
Hot Working Technology
基金
国家自然科学基金青年项目(1702027)
四川省粉末冶金工程技术研究中心开放课题重点项目(SC-FMYJ2017-03)
成都大学大学生创新训练计划孵化培育项目(CDU-CX-2018003)
成都大学本科教育教学改革项目(cdjgb2017103)
关键词
TIO2
Zn掺杂
热处理
相变
TiO2
Zn doping
heat treatment
phase transformation
