Enhanced CO gas sensing properties of Cu doped SnO2 nanostructures prepared by a facile wet chemical method

被引：57

作者：

Bhardwaj, Neha ^{[1
]}

Pandey, Akhilesh ^{[2
]}

Satpati, Biswarup ^{[3
]}

Tomar, Monika ^{[4
]}

Gupta, Vinay ^{[5
]}

Mohapatra, Satyabrata ^{[1
]}

机构：

[1] Guru Gobind Singh Indraprastha Univ, Sch Basic & Appl Sci, New Delhi 110078, India

[2] Def Res & Dev Org, Solid State Phys Lab, Delhi 110054, India

[3] Saha Inst Nucl Phys, 1-AF Bidhannagar, Kolkata 700064, India

[4] Univ Delhi, Dept Phys, Miranda House, Delhi 110007, India

[5] Univ Delhi, Dept Phys & Astrophys, Delhi 110007, India

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2016年 / 18卷 / 28期

关键词：

H2S GAS; THIN-FILM; SENSOR; NANOPARTICLES; NANOWIRES; SURFACE; SENSITIVITY; MECHANISM; NANORODS; SIZE;

D O I：

10.1039/c6cp01758d

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report the synthesis of Cu doped SnO2 nanostructures with enhanced CO gas sensing properties by a facile wet chemical method. The effects of Cu doping on the structural and optical properties of SnO2 nanostructures were investigated using X-ray diffraction, field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) and high resolution TEM (HRTEM) with energy dispersive X-ray spectroscopy, Raman spectroscopy and photoluminescence spectroscopy. FESEM studies revealed the presence of nanosheets and nanodisc-like structures in Cu doped SnO2 samples. Gas sensing studies showed that the sensor prepared using 1% Cu doped SnO2 nanostructures exhibits highly enhanced CO gas sensing properties as compared to pure SnO2 nanostructures and shows excellent selectivity for CO with negligible interference from CH4, CO2 and NO2. The possible mechanism for the enhanced CO gas sensing properties of Cu doped SnO2 nanostructures is proposed.

引用

页码：18846 / 18854

页数：9

共 55 条

[1] Influence of Sn doping on ZnO nanostructures from nanoparticles to spindle shape and their photoelectrochemical properties for dye sensitized solar cells [J].

Ameen, Sadia ;

Akhtar, M. Shaheer ;

Seo, Hyung-Kee ;

Kim, Young Soon ;

Shin, Hyung Shik .

CHEMICAL ENGINEERING JOURNAL, 2012, 187 :351-356

[2] SnO2/carbon nanotube nanocomposites synthesized in supercritical fluids:: highly efficient materials for use as a chemical sensor and as the anode of a lithium-ion battery [J].

An, Guimin ;

Na, Na ;

Zhang, Xinrong ;

Miao, Zhenjiang ;

Miao, Shiding ;

Ding, Kunlun ;

Liu, Zhimin .

NANOTECHNOLOGY, 2007, 18 (43)

[3]

Bose AC, 2003, J PHYS CHEM SOLIDS, V64, P659, DOI 10.1016/S0022-3697(02)00368-2

[4] Observing catalysis through the agency of the participating electrons: Surface-chemistry-induced current changes in a tin oxide nanowire decorated with silver [J].

Chen, X. H. ;

Moskovits, M. .

NANO LETTERS, 2007, 7 (03) :807-812

[5] Structural and optical properties of Cu doped SnO2 nanoparticles: An experimental and density functional study [J].

Chetri, Pawan ;

Saikia, Bhamyarswa ;

Choudhury, Amarjyoti .

JOURNAL OF APPLIED PHYSICS, 2013, 113 (23)

[6] Porous α-Fe2O3 nanosphere-based H2S sensor with fast response, high selectivity and enhanced sensitivity [J].

Deng, Jiwei ;

Ma, Jianmin ;

Mei, Lin ;

Tang, Yunjing ;

Chen, Yuejiao ;

Lv, Ting ;

Xu, Zhi ;

Wang, Taihong .

JOURNAL OF MATERIALS CHEMISTRY A, 2013, 1 (40) :12400-12403

[7] Effective decoration of Pd nanoparticles on the surface of SnO2 nanowires for enhancement of CO gas-sensing performance [J].

Do Dang Trung ;

Nguyen Duc Hoa ;

Pham Van Tong ;

Nguyen Van Duy ;

Dao, T. D. ;

Chung, H. V. ;

Nagao, T. ;

Nguyen Van Hieu .

JOURNAL OF HAZARDOUS MATERIALS, 2014, 265 :124-132

[8] Effect of crystal defects on the electrical properties in epitaxial tin dioxide thin films [J].

Dominguez, JE ;

Fu, L ;

Pan, XQ .

APPLIED PHYSICS LETTERS, 2002, 81 (27) :5168-5170

[9] Thickness dependence of sensor response for CO gas sensing by tin oxide films grown using atomic layer deposition [J].

Du, X. ;

George, S. M. .

SENSORS AND ACTUATORS B-CHEMICAL, 2008, 135 (01) :152-160

[10] Micromachined nanocrystalline silver doped SnO2H2S sensor [J].

Gong, JW ;

Chen, QF ;

Lian, MR ;

Liu, NC ;

Stevenson, RG ;

Adami, F .

SENSORS AND ACTUATORS B-CHEMICAL, 2006, 114 (01) :32-39

← 1 2 3 4 5 6 →