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[1]李行璐,徐晓明,王乐,等.TiO2纳米刺球制备和表征[J].厦门大学学报(自然科学版),2012,51(5):888.
 LI Xing lu,XU Xiao ming,WANG Le,et al.Synthesis and Characterization of TiO2 Nanoacanthosphere[J].Journal of Xiamen University(Natural Science),2012,51(5):888.
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TiO2纳米刺球制备和表征(PDF)
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《厦门大学学报(自然科学版)》[ISSN:0438-0479/CN:35-1070/N]

卷:
51卷
期数:
2012年第5期
页码:
888
栏目:
研究论文
出版日期:
2012-09-20

文章信息/Info

Title:
Synthesis and Characterization of TiO2 Nanoacanthosphere
作者:
李行璐徐晓明王乐韩国彬*
厦门大学化学化工学院,福建 厦门 361005
Author(s):
LI XingluXU XiaomingWANG LeHAN Guobin*
College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,China
关键词:
TiO2纳米粒子刺球
Keywords:
TiO2nanoparticlesacanthosphere
分类号:
O 648
文献标志码:
-
摘要:
采用溶胶凝胶法制备出球形TiO2纳米粒子,通过离心的方法将TiO2纳米粒子从乙醇中转移到水中.在60 ℃下,将分散剂聚乙烯吡咯烷酮(PVP)和刻蚀剂NaBH4加入到TiO2纳米粒子水分散体系中,经61 h的恒温刻蚀反应,制备出TiO2纳米刺球.此外,该刻蚀方法同样被应用于Au@SiO2@TiO2纳米刺球的制备.用扫描电子显微镜(SEM)、动态光散射(DLS)、透射电镜(TEM)及X射线衍射实验(XRD)等方法对TiO2纳米粒子和Au@SiO2@TiO2纳米粒子及其纳米刺球进行表征,进而探索NaBH4刻蚀TiO2的机理.该刻蚀方法所需的设备和实验步骤相对简单,反应条件温和可控,较易实现大批量的TiO2纳米刺球的合成并且也适用于外壳层为TiO2的复合核壳结构纳米刺球的制备.
Abstract:
The novel synthesis of nanoacanthosphere via etching method was developed.The uniform spherical TiO2 nanoparticles were synthesized via solgel method,and the prepared TiO2 nanoparticles were centrifuged to be separated from ethanol,followed by dispersing in water,and etching by NaBH4 under PVP protection for 61 h at 60 ℃ to produce TiO2 nanoacanthosphere.In addition,the etching method was also applied to synthesize Au@SiO2@TiO2 hybrid nanospheres.By means of SEM,DLS,TEM and XRD methods,the structure and properties of nanoacanthosphere formed from spherical nanoparticles were characterized and the etching mechanism was inquired.The reported etching method is rather facile,its mild and easy controllable reaction condition make it readily upscalable for fabrication of TiO2/TiO2 outer shell based hybrid nanoacanthosphere.

参考文献/References:


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备注/Memo

备注/Memo:
收稿日期:20120405 基金项目:厦门大学科技创新重点基金项目(XMKJCX20052001) *通信作者:hangb@xmu.edu.cn
更新日期/Last Update: 2012-09-20