化工新型材料

化工新型材料 ›› 2023, Vol. 51 ›› Issue (6) : 109-113. DOI: 10.19817/j.cnki.issn1006-3536.2023.06.021

新材料与新技术

高分子网络凝胶法制备Fe、Ce掺杂TiO₂粉体的组织结构和光学性能研究

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Microstructure and optical properties of Fe and Ce doped TiO₂ powders prepared by polymer network gel method

Zhang Rongrong, Du Jinghong, Zhang Yijie, Hu Rong, Qin Chaoqian

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Received
2022-03-12
Issue Date	Revised Date
2023-07-07	2022-03-12

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摘要

采用高分子网络凝胶法制备了Fe、Ce单掺和共掺TiO₂粉体,采用热重(TG-DTA)、X射线衍射(XRD)、扫描电镜(SEM)、紫外-可见光(UV-Vis)对粉体的热效应、晶体结构、吸收光谱进行了研究。结果表明:与纯TiO₂相比,无论单掺还是共掺,TG变化基本上是一致的,但是掺杂后明显提高了锐钛矿相向金红石相的转变温度。Fe、Ce离子的掺杂并未改变TiO₂的物相组成,Ce离子的掺杂会抑制锐钛矿向金红石的转变而Fe离子会促进转变进行。Fe、Ce单掺与共掺TiO₂,形貌无明显变化,掺杂后都可以细化TiO₂晶粒,从而增大粉体的比表面积。共掺比单掺可见光吸收性能要好,当掺杂量为1.0% Fe-0.5% Ce时,样品光吸收带边红移最明显,达到556.8nm。

Abstract

Fe and Ce single doped and co-doped TiO₂ powders were prepared by polymer network gel method.The thermal effects,crystal structure and absorption spectra of the powders were studied by TG-DTA,XRD,SEM and UV-Vis.The results showed that compared with pure TiO₂,the change of TG was basically the same regardless of single doping or co-doping,but the doping significantly improved the transition temperature from anatase phase to rutile phase.The doping of Fe and Ce ions didn't not change the phase composition of TiO₂.The doping of Ce ions inhibited the transformation from anatase to rutile,while Fe ions promoted the transformation.The morphology of Fe and Ce doped and Co-doped TiO₂ had no obvious change.After doping,the TiO₂ grains were refined,thereby increasing the specific surface area of the powder.Co-doping had better visible light absorption performance than single doping,and when the doping amount was 1.0% mol Fe-0.5% mol Ce,the red shift of the light absorption band edge of the sample was the most obvious,reaching 556.8nm.

关键词

Fe掺杂 / Ce掺杂 / 二氧化钛粉体 / 高分子网络凝胶法

Key words

Fe doped / Ce doped / TiO₂ powder / polymer network gel method

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高分子网络凝胶法制备Fe、Ce掺杂TiO₂粉体的组织结构和光学性能研究[J]. 化工新型材料, 2023, 51(6): 109-113 DOI:10.19817/j.cnki.issn1006-3536.2023.06.021

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