Microwave assisted hydrothermal synthesis of mesoporous SnO 2 nanoparticles for ethanol sensing and degradation
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Microwave assisted hydrothermal synthesis of mesoporous SnO2 nanoparticles for ethanol sensing and degradation Suraj K. Tripathy • Amrita Mishra • Sandeep Kumar Jha • Rizwan Wahab Abdulaziz A. Al-Khedhairy
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Received: 5 November 2012 / Accepted: 5 January 2013 / Published online: 13 January 2013 Ó Springer Science+Business Media New York 2013
Abstract We report the synthesis of mesoporous SnO2 nanoparticles by a microwave assisted hydrothermal process and their application as a gas sensor. The synthesized materials were characterized by transmission electron microscopy, X-ray diffraction technique, X-ray photoelectron spectroscopy, and Photoluminescence spectroscopy. As the results, we found that as-synthesized SnO2 was synthetic Cassiterite with tetragonal structure and spherical in shape with the primary crystallite size of 6–8 nm, and the SnO2 embedded material was mesoporous with average pore sizes of &15 nm. Moreover, this material showed excellent thermal stability from 80 to 800 °C and its crystal structure after heat treatment was preserved even at ultrahigh temperature of 800 °C. We
Suraj K. Tripathy and Sandeep Kumar Jha previously in Department of Mechanical Engineering, Research Institute of Engineering and Technology, College of Engineering, Korea University, Seoul 136713, South Korea.
Electronic supplementary material The online version of this article (doi:10.1007/s10854-013-1062-0) contains supplementary material, which is available to authorized users. S. K. Tripathy (&) Institute of Minerals and Materials Technology (CSIR), Bhubaneswar 751013, India e-mail: [email protected] S. K. Tripathy S. K. Jha Research Institute of Engineering & Technology & Department of Mechanical Engineering, College of Engineering, Korea University, Seoul 136713, South Korea A. Mishra Department of Food Science and Technology, College of Agriculture and Life Sciences, Chonbuk National University, Jeonju, South Korea
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demonstrated that this material could be used for detection of the ethanol gas because of its stability and nanoscale size at high temperature. Additionally our investigations also suggest that the processed materials can be used for the photocatalytic oxidation of ethanol. These results propose the potential application of the material for a sense and shoot kind of approach for indoor air purification in pharmaceutical and fermentation monitoring and vehicular control through breath analyzer. 1 Introduction The ability to engineer materials on a nanometer length scale has sparked interest across many scientific disciples and has enabled direct investigation into the fundamental size-dependent properties of matter. Of the wide range of nanomaterials currently under investigation, porous metal oxides have attracted particular attention [1, 2]. Such nanostructures have been extensively studied from both experimental and theoretical viewpoints, owing to their potential applications in solar cells [3], catalysis [4], gas sensors [5], more recently in drug (and DNA) delivery [6], S. K. Jha Depart
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