WO3-Au-Pt Nanocrystalline Thin Films as Optical Gas Sensors

被引：7

作者：

Della Gaspera, E. ^{[1
]}

Martucci, A. ^{[1
]}

Yaacob, M. ^{[2
,3
]}

Ou, J. ^{[2
]}

Kalantar-Zadeh, K. ^{[2
]}

Wlodarski, W. ^{[2
]}

机构：

[1] Univ Padua, Dipartimento Ingn Meccan Settore Mat, I-35131 Padua, Italy

[2] RMIT Univ, Sch Elect & Comp Engn, Melbourne, Vic 3001, Australia

[3] Univ Putra Malaysia, Fac Engn, Serdang 43400, Selangor, Malaysia

来源：

SENSOR LETTERS | 2011年 / 9卷 / 02期

关键词：

WO3; Au; Pt; Nanoparticles; Optical Sensor; NANOSTRUCTURED TUNGSTEN-OXIDE; SENSING PROPERTIES; NOBLE-METALS; NANOPARTICLES;

D O I：

10.1166/sl.2011.1570

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

WO3 thin films with peculiar morphology were synthesized using sputtering technique, acid boiling and heat treatment. Samples were subsequently impregnated with Au and Pt ions that were reduced to noble metal nanoparticles with high temperature annealing. Structural and morphological characterizations confirm the distinctive lamellar shape of WO3 crystals and the presence of Au and Pt nanoparticles. Optical gas sensing tests on selected samples show good sensitivity towards H-2, CO and H2S, highlighting a different role played by Au and Pt nanoparticles according to operating temperature. Moreover the sensor response for some samples is wavelength dependent, giving the opportunity to tune the performances of the material by selecting the operative wavelength of analysis.

引用

页码：595 / 599

页数：5

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