[1]黄彦奕,陈鼎宁,叶晓云.ＳｉＯ２ ／ＴｉＯ２ 核壳纳米复合粒子的制备与表征[J].福建工程学院学报,2015,13(01):70-73.[doi:10.3969/j.issn.1672-4348.2015.01.014]
　Huang Yanyi,Chen Dingnin,Ye Xiaoyun.Preparation and characterization of SiO2/TiO2 coreshell nanocomposites[J].Journal of FuJian University of Technology,2015,13(01):70-73.[doi:10.3969/j.issn.1672-4348.2015.01.014]
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ＳｉＯ２ ／ＴｉＯ２ 核壳纳米复合粒子的制备与表征()
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福建工程学院学报[ISSN:2097-3853/CN:35-1351/Z]

卷:
第13卷
期数:
2015年01期
页码:
70-73
栏目:
出版日期:
2015-02-25

文章信息/Info

Title:
Preparation and characterization of SiO2/TiO2 coreshell nanocomposites
作者:
黄彦奕; 陈鼎宁; 叶晓云
福建工程学院材料科学与工程学院
Author(s):
Huang Yanyi;  Chen Dingnin;  Ye Xiaoyun
College of Materials Sciences and Engineering, Fujian University of Technology
关键词:
SiO2;  TiO2;  核壳;  形貌
Keywords:
SiO2;  TiO2;  coreshell;  morphology
分类号:
TB383
DOI:
10.3969/j.issn.1672-4348.2015.01.014
文献标志码:
A
摘要:
利用钛酸丁酯的水解缩合在SiO2微球表面沉积TiO2层，制得二氧化硅/二氧化钛（SiO2/TiO2）核壳纳米复合材料。采用TEM、EDS、FTIR和XRD等对所得的复合材料的形貌及结构进行表征。结果表明，该复合物具有明显的核壳结构。内核SiO2粒子粒径约220 nm，表面TiO2包覆层厚度约20 nm，两者之间形成了Ti-O-Si键。TiO2层的厚度随着钛源的量增加而增大。该SiO2/TiO2核壳结构复合物经高温处理后，壳层TiO2由无定型转化为锐钛矿型。
Abstract:
SiO2/TiO2 coreshell nanocomposites were prepared by the modification of titania on silica microspheres through the hydrolysis of tetrabutyl orthotitanate (TBOT) precursor. The morphology and structrue of the coreshell nanocomposites were characterized by transmission electron microscopy (TEM), energy dispersive spectroscope (EDS), Fourier transform infrared spectroscopy (FT-IR) and Xray diffraction (XRD). The results show that the composites comprise obvious coreshell structure composed of SiO2 core with an average diameter of about 220 nm and an outer TiO2 layer with a thickness of about 20nm. In addition, Ti-O-Si chemical bonds are formed between the SiO2shell and the outer TiO2 layer (during the formation of the coreshell composite particles). The thickness of the TiO2 layer is increased with the increase of TBOT precusor, whereas the amorphous crystalline TiO2 layer is transferred into anatase after the heat treatment.

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更新日期/Last Update: 2015-02-25