Highly sensitive gas sensors based on hollow SnO2 spheres prepared by carbon sphere template method

被引：119

作者：

Wang, Caihong ^{[1
]}

Chu Xiangfeng ^{[1
]}

Wu Mingmei ^{[1
]}

机构：

[1] Zhongshan Univ, Sch Chem & Chem Engn, Guangzhou 510275, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2007年 / 120卷 / 02期

关键词：

SnO2; hollow sphere; gas sensor;

D O I：

10.1016/j.snb.2006.03.004

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Hollow SnO2 spheres were prepared in dimethylfomamide (DMF) by controlled hydrolysis of SnCl2 using newly made carbon microspheres as templates. The phase composition and morphology of the material particles were characterized by means of X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. The gas sensing properties of sensors based on the hollow SnO2 spheres were investigated. It was found that the sensor exhibited good performances, characterized by high response, good selectivity and very short response time to dilute (C2H5)(3)N operating at 150 degrees C, especially, the response to 1 ppb (C2H5)(3)N attained 7.1 at 150 degrees C. It was noteworthy that the response to 0.1 ppm C2H5OH of the sensor was 2.7 at 250 degrees C. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：508 / 513

页数：6

共 35 条

[21] Titanium oxide thin films for NH3 monitoring: Structural and physical characterizations [J].

Manno, D ;

Micocci, G ;

Rella, R ;

Serra, A ;

Taurino, A ;

Tepore, A .

JOURNAL OF APPLIED PHYSICS, 1997, 82 (01) :54-59

[22] Porous tin oxide nanostructured microspheres for sensor applications [J].

Martinez, CJ ;

Hockey, B ;

Montgomery, CB ;

Semancik, S .

LANGMUIR, 2005, 21 (17) :7937-7944

[23] Gas-sensitive properties of nanometer-sized SnO2 [J].

Pan, QY ;

Xu, JQ ;

Dong, XW ;

Zhang, JP .

SENSORS AND ACTUATORS B-CHEMICAL, 2000, 66 (1-3) :237-239

[24]

Radtchenko IL, 2001, ADV MATER, V13, P1684, DOI 10.1002/1521-4095(200111)13:22<1684::AID-ADMA1684>3.0.CO

[25]

2-Z

[26]

Schmidt HT, 2002, ADV MATER, V14, P532, DOI 10.1002/1521-4095(20020404)14:7<532::AID-ADMA532>3.3.CO

[27]

2-W

[28] Colloidal carbon spheres and their core/shell structures with noble-metal nanoparticles [J].

Sun, XM ;

Li, YD .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2004, 43 (05) :597-601

[29]

Walsh D, 1999, ADV MATER, V11, P324, DOI 10.1002/(SICI)1521-4095(199903)11:4<324::AID-ADMA324>3.0.CO

[30]

2-A

← 1 2 3 4 →