Decoration of Gold Nanoparticles on TiO2 Thin Films for Enhanced Response of Ethanol Gas Sensors

Benjarong Samransuksamer; Mati Horprathum; Pitak Eiamchai; Viyapol Patthanasettakul; Anurat Wisitsoraat; Chanunthorn Chananonnawathorn; Ditsayut Phokharatkul; Pongpan Chindaudom; Tula Jutarosaga; Worawarong Rakreungdet; Supattanapong Dumrongrattana

doi:10.4028/www.scientific.net/AMR.979.251

Paper Titles

Physical and Gamma-Ray Shielding Properties of Strontium Borosilicate Glasses
p.236

High Performance Metal Surface Coating Using Ta₂O₅Thin Film Prepared by D.C. Magnetron Sputtering
p.240

Determination of Thickness and Optical Properties of Tantalum Oxide Thin Films by Spectroscopic Ellipsometry
p.244

Effects of Annealing Treatment on WO₃ Thin Films Prepared by DC Reactive Magnetron Sputtering
p.248

Decoration of Gold Nanoparticles on TiO₂ Thin Films for Enhanced Response of Ethanol Gas Sensors
p.251

Fabrication of 3D-Hybrid Nanostructure for Surface-Enhanced Raman Scattering Substrate: Effect of Applied Voltage on Porous Size of AAO Template
p.255

Vertically Aligned Ag Nanorod Arrays for Trace Cypermethrin Detection
p.259

Effect of Emitting Current Ion Source on Structural, Optical and Electrical Properties of Nanostructured ITO Thin Films by Ion-Beam Assisted Evaporation
p.263

A Study on Composition of Plaster Waste from Ornament Factory
p.267

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 979Decoration of Gold Nanoparticles on TiO2 Thin...

Decoration of Gold Nanoparticles on TiO₂ Thin Films for Enhanced Response of Ethanol Gas Sensors

Abstract:

This work investigated the decoration of the gold (Au) nanoparticles (NPs) on the TiO₂ thin films for the applications in ethanol gas sensors. The Au-decorated TiO₂ thin films (Au-TiO₂) were prepared by the DC magnetron sputtering on the silicon (100) wafers and alumina substrates, interdigitated with Au electrodes. The distribution and size of Au nanoparticles were controlled by varying the sputtering time. Morphologies and element composition of the Au-TiO₂ films were examined by field-emission scanning electron microscopy (FE-SEM) and energy-dispersive X-ray spectroscopy (EDX) respectively. The FE-SEM micrographs when the sputtering time was increased, the average size of the Au NPs was also increased. On the other hand, the distribution of the Au NPs was decreased. The change in size and distribution of the Au NPs consequently improved the response of ethanol gas sensors. The prepared Au-TiO₂ was tested, in comparison with TiO₂ reference films, as the ethanol sensors at 250-350^oC in 50-1,000 ppm gas concentration. The results showed that the TiO₂ thin film with Au-decorated at 6 sec sputtering time yielded the highest response of 514 at 350^oC operating temperature and 1,000 ppm gas concentration.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Advanced Materials Research (Volume 979)

Pages:

251-254

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.979.251

Citation:

Cite this paper

Online since:

June 2014

Authors:

Benjarong Samransuksamer*, Mati Horprathum, Pitak Eiamchai, Viyapol Patthanasettakul, Anurat Wisitsoraat, Chanunthorn Chananonnawathorn, Ditsayut Phokharatkul, Pongpan Chindaudom, Tula Jutarosaga, Worawarong Rakreungdet, Supattanapong Dumrongrattana

Keywords:

Ethanol, Gas Sensors, Gold Nanoparticles, Sputtering, Titanium Dioxide

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] P. Hu, G. Du, W. Zhou, J. Cui, J. Lin, H. Liu, D. Liu, J. Wang, S. Chen. Enhancement of Ethanol Vapor Sensing of TiO2 Nanobelt by Surface Engineering, Applied Materials&Interfaces., 2(2010) 3263-3269.

DOI: 10.1021/am100707h

Google Scholar

[2] Q. Xiang, G.F. Meng, H.B. Zhao, Y. Zhang, H. Li, W.J. Ma, J.Q. Xu. Au Nanoparticle Modified WO3 Nanorods with Their Enhanced Properties for Photocatalysis and Gas Sensing, J. Phys. Chem. C., 114(2010) 2049-(2055).

DOI: 10.1021/jp909742d

Google Scholar