Single-step hydrothermal synthesis of strontium titanate nanoparticles from crystalline anatase titanium dioxide

ISL OpenIR > 青海盐湖研究所知识仓储

	Single-step hydrothermal synthesis of strontium titanate nanoparticles from crystalline anatase titanium dioxide
	Zhang, Yabing 1,2; Zhong, Li 1; Duan, Dongping1,3
	2015-12-01
发表期刊	CERAMICS INTERNATIONAL
卷号	41 期号:10 页码:13516-13524
关键词	Srtio3 Hydrothermal Process Nanoparticles Perovskite
摘要	In the present study, strontium titanate (SrTiO3) nanoparticles were successfully synthesized by a single-step direct hydrothermal process under the strong alkaline condition using crystalline anatase titanium dioxide (TiO2) and strontium hydroxide octahydrate (Sr(OH)(2) center dot 8H(2)O) as the starting materials at 220 degrees C. The X-ray diffraction (XRD) patterns identified the products were highly crystalline and well matched with standard SrTiO3 data. The crystalline structure, lattice parameters, and atomic position were refined by Highscore Plus and Maud program. The results of Rietveld refinement showed high purity of products. The thermal field emission scanning electron microscope and energy dispersive spectrometer (FE-SEM-EDS) displayed the samples prepared were perovskite phase cubic SrTiO3 nanoparticles having regular morphology and small particle with a size distribution of 32-45 nm. The fine morphologies and structures of SrTiO3 nanoparticles were investigated by field emission transmission electron microscope (FE-TEM). The results showed the important roles played by reaction duration and mole ratio of Sr and Ti (Sr/Ti) to the grain size of SrTiO3 nanoparticles. The particle sizes increased with prolonging reaction duration and reducing Sr/Ti. Compared to SrTiO3 synthesized by solid state reaction, the as-synthesized SrTiO3 nanoparticles had large specific surface areas (up to 32.98 m(2)/g), which would exhibit potential applications in photocatalysis. The reaction mechanism of the process was illustrated using the dissolution precipitation mechanism finally. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/6164
专题	青海盐湖研究所知识仓储盐湖资源综合利用工程技术中心
作者单位	1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China 3.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Qinghai, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yabing,Zhong, Li,Duan, Dongping. Single-step hydrothermal synthesis of strontium titanate nanoparticles from crystalline anatase titanium dioxide[J]. CERAMICS INTERNATIONAL,2015,41(10):13516-13524.
APA	Zhang, Yabing,Zhong, Li,&Duan, Dongping.(2015).Single-step hydrothermal synthesis of strontium titanate nanoparticles from crystalline anatase titanium dioxide.CERAMICS INTERNATIONAL,41(10),13516-13524.
MLA	Zhang, Yabing,et al."Single-step hydrothermal synthesis of strontium titanate nanoparticles from crystalline anatase titanium dioxide".CERAMICS INTERNATIONAL 41.10(2015):13516-13524.