Filter paper-templated preparation of ZnO thin films and examination of their gas-sensing properties--颗粒学报PARTICUOLOGY

Wang, B., Han, N., Meng, D., Yue, R., Yan, J., & Chen, Y. (2011). Filter paper-templated preparation of ZnO thin films and examination of their gas-sensing properties. Particuology, 9(3), 253–259. https://doi.org/10.1016/j.partic.2011.02.001

Filter paper-templated preparation of ZnO thin films and examination of their gas-sensing properties

Bao Wang ^a, Ning Han ^{b c}, Dong Meng ^b, Renliang Yue ^{b c}, Jinghui Yan ^a, Yunfa Chen ^b *

a School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, China
b Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
c Graduate University of Chinese Academy of Sciences, Beijing 100049, China

10.1016/j.partic.2011.02.001

Volume 9, Issue 3, June 2011, Pages 253-259

Received 16 November 2009, Revised 17 March 2010, Accepted 21 February 2011, Available online 25 March 2011.

E-mail: yfchen@home.ipe.ac.cn

Highlights

Abstract

ZnO thin films prepared by using quantitative filter paper as a template and Zn(CH₃CO₂)₂·2H₂O ethanol precursor solution were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The effects of sample calcination temperature, precursor concentration and filter paper types were studied, and the growth process was investigated by infra-red (IR) spectroscopy and thermogravimetric analysis/differential thermal analysis (TGA/DTA). The results show that samples soaked in a 1.5 mol/L Zn(CH₃CO₂)₂·2H₂O ethanol solution and calcined at 600 °C yield ZnO films of uniform particle size, approximately 30, 40 and 50 nm, for fast-, medium- and slow-speed filter papers, respectively. The formaldehyde gas sensing properties of the ZnO nanoparticles were tested, showing that the material prepared from fast-speed filter paper has a higher response to 120–205 ppm formaldehyde at 400 °C than that prepared from medium- or slow-speed paper, which depends on the particle size.

Graphical abstract

Keywords

ZnO thin films; Quantitative filter paper; Template; Gas sensing properties

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