一种制备多孔晶体二氧化钛、钛酸锶和钛酸钡球体的通用方法。

A general approach to porous crystalline TiO2, SrTiO3, and BaTiO3 spheres.

作者信息

Wang Yawen, Xu Hua, Wang Xiaobing, Zhang Xi, Jia Huimin, Zhang Lizhi, Qiu Jianrong

机构信息

Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, 430079, People's Republic of China.

出版信息

J Phys Chem B. 2006 Jul 20;110(28):13835-40. doi: 10.1021/jp061597t.

DOI:10.1021/jp061597t

PMID:16836331

Abstract

Monodispersed porous crystalline TiO(2), SrTiO(3), and BaTiO(3) spheres were produced through a one-step hydrothermal process from amorphous TiO(2) spheres. The resulting samples were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and nitrogen sorption measurements. On the basis of the characterization results, we proposed a formation process of these porous spheres according to a mechanism analogous to the Kirkendall effect. This study provides a general way to synthesize porous titania-based spheres.

摘要

通过一步水热法，以非晶态TiO₂ 球为原料制备了单分散多孔晶体TiO₂、SrTiO₃ 和BaTiO₃ 球。通过扫描电子显微镜（SEM）、透射电子显微镜（TEM）、X射线衍射（XRD）和氮吸附测量对所得样品进行了表征。基于表征结果，我们根据类似于柯肯达尔效应的机理提出了这些多孔球的形成过程。本研究提供了一种合成多孔二氧化钛基球的通用方法。