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Single-step hydrothermal synthesis of strontium titanate nanoparticles from crystalline anatase titanium dioxide
Zhang, Yabing1,2; Zhong, Li1; Duan, Dongping1,3
2015-12-01
Source PublicationCERAMICS INTERNATIONAL
Volume41Issue:10Pages:13516-13524
SubtypeArticle
AbstractIn 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.
KeywordSrtio3 Hydrothermal Process Nanoparticles Perovskite
WOS HeadingsScience & Technology ; Technology
WOS KeywordPHOTOCATALYTIC ACTIVITY ; SRTIO3 NANOPARTICLES ; POWDERS ; NANOCUBES
Indexed BySCI
Language英语
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Ceramics
WOS IDWOS:000362860900123
Citation statistics
Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/6164
Collection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
Affiliation1.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
Recommended Citation
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.
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