Synthesis of SnO2 hollow microspheres from ultrasonic atomization and their role in hydrogen sensing

被引:22
作者
Patil, L. A. [1 ]
Shinde, M. D. [1 ]
Bari, A. R. [1 ]
Deo, V. V. [1 ]
机构
[1] Pratap Coll, Nanomat Res Lab, Dept Phys, Amalner 425401, Maharashtra, India
来源
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2011年 / 176卷 / 07期
关键词
Ultrasonic atomizer; Nanocrystallites; SnO2 hollow microspheres; Thick film; Hydrogen sensing; Selectivity; Response time; Recovery time; THICK-FILM SENSORS; GAS SENSITIVITY; SPRAY-PYROLYSIS; TIN OXIDE; PERFORMANCE; NANOPARTICLES; MICROSTRUCTURE; NANOCRYSTALS; SPHERES; POWDER;
D O I
10.1016/j.mseb.2010.12.019
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Nanostructural SnO2 hollow microspheres were synthesized using ultrasonic atomization technique. It is interesting that hollow microspheres could be prepared from ultrasonic atomization technique without any aid of template and surfactant. X-ray powder diffraction (XRD) confirmed the material to be SnO2 having tetragonal structure. Average crystallite size calculated from X-ray diffractogram using Scherer's equation was found to be 8.45 nm. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to study the microscopic study of fine powder particles. Powder consists of hollow microspheres of average diameter of 0.58 mu m as well as nanoparticles of average diameter of 6 nm. The sensors fabricated from such powder show high hydrogen (1000 ppm) response (S = 2379) under the optimized experimental conditions. Sensor performance merits, such as, high hydrogen response, high hydrogen selectivity, short response time (2 s) and quick recovery time (15 s) may be due to both nanocrystallites and hollow microspheres associated in SnO2 sensing material. The dramatic change in gas response was explained by the rapid diffusion of the target gas through the nano-porous structure of SnO2 hollow microspheres. (c) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:579 / 587
页数:9
相关论文
共 61 条
[1]   Study of sensitivity and response kinetics changes for SnO2 thin-film hydrogen sensors [J].
Adamyan, A. Z. ;
Adamyan, Z. N. ;
Aroutiounian, V. M. .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2009, 34 (19) :8438-8443
[2]   Synthesis and biomedical applications of hollow nanostructures [J].
An, Kwangjin ;
Hyeon, Taeghwan .
NANO TODAY, 2009, 4 (04) :359-373
[3]   Nanocomposite ZnO-SnO2 Nanofibers Synthesized by Electrospinning Method [J].
Asokan, Kandasami ;
Park, Jae Young ;
Choi, Sun-Woo ;
Kim, Sang Sub .
NANOSCALE RESEARCH LETTERS, 2010, 5 (04) :747-752
[4]   Hydrothermally treated sol solution of tin oxide for thin-film gas sensor [J].
Baik, NS ;
Sakai, G ;
Miura, N ;
Yamazoe, N .
SENSORS AND ACTUATORS B-CHEMICAL, 2000, 63 (1-2) :74-79
[5]   Structural characterization of phase transition of Al2O3 nanopowders obtained by polymeric precursor method [J].
Cava, S. ;
Tebcherani, S. M. ;
Souza, I. A. ;
Pianaro, S. A. ;
Paskocimas, C. A. ;
Longo, E. ;
Varela, J. A. .
MATERIALS CHEMISTRY AND PHYSICS, 2007, 103 (2-3) :394-399
[6]   Porous Hollow Fe3O4 Nanoparticles for Targeted Delivery and Controlled Release of Cisplatin [J].
Cheng, Kai ;
Peng, Sheng ;
Xu, Chenjie ;
Sun, Shouheng .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (30) :10637-10644
[7]   Templated synthesis of porous capsules with a controllable surface morphology and their application as gas sensors [J].
Choi, Won San ;
Koo, Hye Young ;
Zhongbin, Zhuang ;
Li, Yadong ;
Kim, Dong-Yu .
ADVANCED FUNCTIONAL MATERIALS, 2007, 17 (11) :1743-1749
[8]   Novel fabrication of an SnO2 nanowire gas sensor with high sensitivity [J].
Choi, Young-Jin ;
Hwang, In-Sung ;
Park, Jae-Gwan ;
Choi, Kyoung Jin ;
Park, Jae-Hwan ;
Lee, Jong-Heun .
NANOTECHNOLOGY, 2008, 19 (09)
[9]   Novel ionic liquid assisted synthesis of SnO2 microspheres [J].
Dong, Wen-Sheng ;
Li, Meng-Yuan ;
Liu, Chunling ;
Lin, Fengqiang ;
Liu, Zhaotie .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2008, 319 (01) :115-122
[10]   Hydrothennal synthesis of SnO2 hollow microspheres [J].
Du, FL ;
Guo, ZY ;
Li, GC .
MATERIALS LETTERS, 2005, 59 (19-20) :2563-2565