Issue 9, 2012
From the journal:

CrystEngComm

Surfactant-free solution phase synthesis of monodispersed SnO2 hierarchical nanostructures and gas sensing properties†

Haijiao Zhang,a   Qingquan He,a   Xuedong Zhu,*b   Dengyu Pan,a   Xiaoyong Denga  and  Zheng Jiao*a  

* Corresponding authors

a Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, P. R. China
E-mail: zjiao@shu.edu.cn
Fax: +86-21-6613-7803
Tel: +86-21-6613-7803

b State Key Laboratory of Chemical Engineering, East China University of Science & Technology, Shanghai, P. R. China
E-mail: xdzhu@ecust.edu.cn
Fax: +86-21-6613-7803
Tel: +86-21-6613-7803

Abstract

In this work, SnO2 hierarchical nanostructures were successfully prepared via a simple and surfactant-free hydrothermal process starting from stannous sulfate (SnSO4) and trisodium citrate dihydrate (Na3C6H5O7·2H2O) in a suitable ethanol–water system. TEM and HRTEM images showed that the obtained SnO2 products are uniform, well-dispersed, and have spherical architectures, composed of tiny primary nanocrystals, and the diameters are about 50 nm. It was found that the amount of Na3C6H5O7·2H2O and the volume ratio of ethanol and water played important roles in determining the final morphologies of the products. The gas sensing results indicated that the sensor made from porous SnO2 nanostructures calcined at 400 °C exhibited excellent gas sensing performance to butanol at the low temperature compared with those under higher calcination temperature and commercial SnO2. The SnO2 hierarchical nanostructures possess uniform size and large surface areas, making them ideal candidates for more potential applications such as battery electrodes and as opto-electronic devices.

Graphical abstract: Surfactant-free solution phase synthesis of monodispersed SnO2 hierarchical nanostructures and gas sensing properties

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Article information

DOI
https://doi.org/10.1039/C2CE06558D
Article type
Paper
Submitted
22 Nov 2011
Accepted
16 Jan 2012
First published
29 Feb 2012

CrystEngComm, 2012,14, 3169-3176

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Surfactant-free solution phase synthesis of monodispersed SnO2 hierarchical nanostructures and gas sensing properties

H. Zhang, Q. He, X. Zhu, D. Pan, X. Deng and Z. Jiao, CrystEngComm, 2012, 14, 3169 DOI: 10.1039/C2CE06558D

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