Gold sensitized sprayed SnO2 nanostructured film for enhanced LPG sensing

被引：31

作者：

Nakate, Umesh T. ^{[1
,4
]}

Patil, Pramila ^{[2
]}

Ghule, Balaji G. ^{[4
]}

Ekar, Satish ^{[4
]}

Al-Osta, Ahmed ^{[4
]}

Jadhav, V. V. ^{[3
]}

Mane, Rajaram S. ^{[4
,5
]}

Kale, S. N. ^{[1
]}

Naushad, Mu. ^{[5
]}

O'Dwyer, Colm ^{[6
]}

机构：

[1] Deemed Univ, Def Inst Adv Technol, Dept Appl Phys, Thin Films Lab, Pune 411025, Maharashtra, India

[2] Def Bioengn & Electromed Lab, Bangalore 560093, Karnataka, India

[3] Shivaji Mahavidyalya, Dept Phys, Udgir, MS, India

[4] Swami Ramanand Teerth Marathwada Univ, Sch Phys Sci, Ctr Nanomat & Energy Devices, Nanded 431606, MS, India

[5] King Saud Univ, Coll Sci, Dept Chem, Bld 5, Riyadh, Saudi Arabia

[6] Univ Coll Cork, Sch Chem, Cork, Ireland

来源：

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS | 2017年 / 124卷

关键词：

Gold sensitization; SnO2; Nanostructure; LPG; Spray pyrolysis; TIN OXIDE; IMPROVED RESPONSE; PD NANOPARTICLES; GAS SENSORS; DEPOSITION; SURFACE; CO; NANOWIRES; PLATINUM; NANORODS;

D O I：

10.1016/j.jaap.2016.12.029

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

We report LPG sensing of gold (Au)-sensitized SnO2 nanostructured film fabricated by an easy spray pyrolysis deposition method whose surface morphology is confirmed by field-emission scanning electron microscopy and atomic force microscopy images and structure by X-ray diffraction pattern. Energy dispersive X-ray spectrometer analysis has carried out for finding elemental composition. The SnO2 film is uniform and consists of spherical particles of similar to 10 nm. The highest gas response observed at 780 ppm LPG concentration for pristine SnO2 is 28%, at operating temperature 623 K, which is greatly improved on Au sensitization up to 57% with 60 s rapid response time at 598 K operating temperarture. The high gas response is due to electronic effect and catalytic spill-over effect of Au sensitization. The improved sensing mechanism has throughly been explored. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：362 / 368

页数：7

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