暴露{111}面的截顶点四棱双锥锐钛矿多面体的制备

doi:10.3969/j.issn.0253-2778.2013.02.005

中国科学技术大学学报 ›› 2013, Vol. 43 ›› Issue (2): 115-119.DOI: 10.3969/j.issn.0253-2778.2013.02.005

暴露{111}面的截顶点四棱双锥锐钛矿多面体的制备

周明慧

中国科学技术大学合肥微尺度物质科学国家实验室，化学系，安徽合肥 230026

收稿日期:2012-06-29 修回日期:2012-09-19 出版日期:2013-02-28 发布日期:2013-02-28

Synthesis of truncated anatase bipyramids with exposure of {111} facets

ZHOU Minghui

Hefei National Laboratory for Physical Science at Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China

Received:2012-06-29 Revised:2012-09-19 Online:2013-02-28 Published:2013-02-28
Contact: YANG Qing
About author:ZHOU Minghui, female, born in 1987, master. Research filed: inorganic chemistry, inorganic synthesis and preparative chemistry. E-mail: mhzhou@mail.ustc.edu.cn

摘要/Abstract

摘要： 以四氟化钛为前驱物、P123为表面活性剂、柠檬酸为稳定剂、盐酸为酸性调节剂、氟化铵为添加剂，利用水热方法首次制备出暴露{111}面的截顶点四棱双锥锐钛矿多面体.通过XRD，SEM，TEM，HRTEM，SEAD和EDX对所制备的多面体的组成、结构和形貌进行了分析和表征.结果显示：柠檬酸和氟化铵的使用，有利于锐钛矿多面体的取向生长和{111}晶面的保留.同时研究发现，所制备的多面体在碱性和紫外光照条件下对亚甲基蓝(MB)具有很好的催化活性和降解效果，显示出潜在的应用价值.

关键词: 二氧化钛多面体, 取向生长, 水热合成, 光催化剂

Abstract: Polyhedrons of truncated anatase bipyramids with exposure of {111} facets were hydrothermally synthesized from hydrolysis of TiF4 in the presence of NH4F, HCl, and tri-block copolymer P123 using citric acid monohydrate as a stabilizer. The phase, crystal structure, morphology, chemical composition and property of the anatase polyhedrons were characterized by various techniques of X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), scanning electron microscopy (SEM), selected area electron diffraction (SEAD), energy-dispersive X-ray spectrometry (EDX) and UV radiations, and their high performances in photo-degradation of methylene blue (MB) under alkaline conditions were specifically recognized.

Key words: anatase polyhedrons, oriented growth, hydrothermal synthesis, photocatalyst

周明慧，杨晴. 暴露{111}面的截顶点四棱双锥锐钛矿多面体的制备[J]. 中国科学技术大学学报, 2013, 43(2): 115-119.

ZHOU Minghui, YANG Qing. Synthesis of truncated anatase bipyramids with exposure of {111} facets[J]. Journal of University of Science and Technology of China, 2013, 43(2): 115-119.

暴露{111}面的截顶点四棱双锥锐钛矿多面体的制备

Synthesis of truncated anatase bipyramids with exposure of {111} facets

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