Issue 9, 2013
From the journal:

RSC Advances

A class of hierarchical nanostructures: ZnO surface-functionalized TiO2 with enhanced sensing properties

Zheng Lou,a   Jianan Deng,a   Lili Wang,a   Rui Wang,*a   Teng Feia  and  Tong Zhang*a  

* Corresponding authors

a State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, China
E-mail: zhangtong@jlu.edu.cn, wangrui@jlu.edu.cn
Fax: +86 431 85168270
Tel: +86 431 85168385

Abstract

Combining the versatility of the electrospinning technique and the hydrothermal growth of nanostructures enabled the fabrication of TiO2/ZnO composite nanostructures. XRD, FESEM, TEM and EDX analysis confirmed the growth of ZnO nanosheets with a diameter of about 500 nm on the surface of TiO2 nanofibers. Gas sensing properties of the sensors fabricated from the as-prepared TiO2/ZnO, TiO2 and ZnO were systematically investigated. The TiO2/ZnO sensor exhibits a response of 15.7 to 100 ppm of ethanol at 280 °C, which is much better than pure TiO2 and ZnO. The enhanced sensing performance to ethanol is mainly attributed to the formation of heterojunctions between TiO2 and ZnO, which leads to the interfacial transport of excess carriers.

Graphical abstract: A class of hierarchical nanostructures: ZnO surface-functionalized TiO2 with enhanced sensing properties

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Article information

DOI
https://doi.org/10.1039/C2RA22655C
Article type
Paper
Submitted
27 Oct 2012
Accepted
21 Dec 2012
First published
21 Dec 2012

RSC Adv., 2013,3, 3131-3136

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A class of hierarchical nanostructures: ZnO surface-functionalized TiO2 with enhanced sensing properties

Z. Lou, J. Deng, L. Wang, R. Wang, T. Fei and T. Zhang, RSC Adv., 2013, 3, 3131 DOI: 10.1039/C2RA22655C

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