Mesostructured pure and copper-catalyzed tungsten oxide for NO2 detection

被引：37

作者：

Rossinyol, Emma

Prim, Anna

Pellicer, Eva

Rodriguez, Jordi

Peiro, Francesca

Cornet, Albert

Ramon Morante, Joan

Tian, Bozhi

Bo, Tu

Zhao, Dongyuan

机构：

[1] Univ Barcelona, Dept Elect, EME, CeRMAE IN2 UB, E-08028 Barcelona, Spain

[2] Fudan Univ, Dept Chem, Mol Catalysis & Innovat Mat Lab, Shanghai 200433, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2007年 / 126卷 / 01期

关键词：

WO3; mesoporous oxide; gas sensor; catalytic additive; GAS-SENSING APPLICATIONS; SEMICONDUCTING OXIDES; THIN-FILMS; TIN OXIDE; SENSOR; RESISTORS; INDIUM;

D O I：

10.1016/j.snb.2006.10.017

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Different tungsten oxide mesoporous nanostructures were used as resistive solid state sensor for NO, gas detection. The electrical characterization revealed that WO3 was sensitive to NO2, even to low gas concentrations, although differences attributable to its structure were observed. The mesoporous material synthesized as a replica of three-dimensional cubic (KIT-6) silica structure showed better and faster response than two-dimensional hexagonal (SBA-15) structure. The introduction of copper as catalytic additive allowed improving both sensor response and response time, X-ray photoelectron spectroscopy (XPS) measurements showed that copper was mainly placed at the material surface as Cu(I). (C) 2006 Elsevier B.V. All rights reserved.

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页码：18 / 23

页数：6

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