Issue 38, 2015
From the journal:

RSC Advances

One-pot synthesis of hierarchical WO3 hollow nanospheres and their gas sensing properties

Chong Wang,a   Changhao Feng,a   Meng Wang,a   Xin Li,a   Pengfei Cheng,b   Hong Zhang,a   Yanfeng Sun,*a   Peng Suna  and  Geyu Lu*a  

* Corresponding authors

a State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, People’s Republic of China
E-mail: syf@jlu.edu.cn, lugy@jlu.edu.cn
Fax: +86 431 85167808
Tel: +86 431 85167808

b School of Aerospace Science and Technology, Xidian University, Xi’an 710126, People’s Republic of China

Abstract

In this paper, a one-pot synthesis of WO3 hollow sphere nanostructure has been realized via a one-pot template-free solvothermal method. X-Ray diffraction patterns demonstrated that the products are pure monoclinic WO3. Based on the observation of scanning electronic microscopy (SEM) and transmission electron microscopy (TEM), it was revealed that the as-prepared WO3 nanospheres have a diameter of around 2 μm and are hollow structures with shell thickness of about 300 nm which are constructed by numerous oriented nanocrystals. Sensors based on the synthesized WO3 hollow nanospheres exhibited high selectivity to NO2 at low operating temperature. The detection limit can be as low as ∼40 ppb level.

Graphical abstract: One-pot synthesis of hierarchical WO3 hollow nanospheres and their gas sensing properties

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Article information

DOI
https://doi.org/10.1039/C5RA01121C
Article type
Paper
Submitted
20 Jan 2015
Accepted
17 Mar 2015
First published
17 Mar 2015

RSC Adv., 2015,5, 29698-29703

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One-pot synthesis of hierarchical WO3 hollow nanospheres and their gas sensing properties

C. Wang, C. Feng, M. Wang, X. Li, P. Cheng, H. Zhang, Y. Sun, P. Sun and G. Lu, RSC Adv., 2015, 5, 29698 DOI: 10.1039/C5RA01121C

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