Large-scale synthesis of WO3 nanoplates by a microwave-hydrothermal method

Tungsten oxide (WO3) nanoplates were synthesized by a 270 W microwave-hydrothermal reaction of Na2WO4·2H 2O and citric acid (C6H8O7· H2O) in deionized water. X-ray diffraction (XRD), scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM), and selected area elect...

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Main Authors:	Sungpanich J., Thongtem T., Thongtem S.
Format:	Article
Language:	English
Published:	2014
Online Access:	http://www.scopus.com/inward/record.url?eid=2-s2.0-83555174770&partnerID=40&md5=f16ce1acc063620ec4f228bb86e36de3 http://cmuir.cmu.ac.th/handle/6653943832/5990
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Institution:	Chiang Mai University
Language:	English

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spelling	th-cmuir.6653943832-59902014-08-30T03:23:42Z Large-scale synthesis of WO3 nanoplates by a microwave-hydrothermal method Sungpanich J. Thongtem T. Thongtem S. Tungsten oxide (WO3) nanoplates were synthesized by a 270 W microwave-hydrothermal reaction of Na2WO4·2H 2O and citric acid (C6H8O7· H2O) in deionized water. X-ray diffraction (XRD), scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM), and selected area electron diffraction (SAED) were used to reveal the synthesis of WO3 complete rectangular nanoplates in the solution of 0.2 g citric acid for 180 min, with O-W-O FTIR stretching modes at 819 and 741 cm -1, and two prominent O-W-O Raman stretching modes at 804 and 713 cm-1. The 2.71 eV indirect energy gap, and 430-460 nm blue emission wavelength range of WO3 complete rectangular nanoplates were determined using UV-visible and photoluminescence (PL) spectrometers. The formation mechanism was also proposed according to the experimental results. © 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved. 2014-08-30T03:23:42Z 2014-08-30T03:23:42Z 2012 Article 2728842 10.1016/j.ceramint.2011.08.030 CINND http://www.scopus.com/inward/record.url?eid=2-s2.0-83555174770&partnerID=40&md5=f16ce1acc063620ec4f228bb86e36de3 http://cmuir.cmu.ac.th/handle/6653943832/5990 English
institution	Chiang Mai University
building	Chiang Mai University Library
country	Thailand
collection	CMU Intellectual Repository
language	English
description	Tungsten oxide (WO3) nanoplates were synthesized by a 270 W microwave-hydrothermal reaction of Na2WO4·2H 2O and citric acid (C6H8O7· H2O) in deionized water. X-ray diffraction (XRD), scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM), and selected area electron diffraction (SAED) were used to reveal the synthesis of WO3 complete rectangular nanoplates in the solution of 0.2 g citric acid for 180 min, with O-W-O FTIR stretching modes at 819 and 741 cm -1, and two prominent O-W-O Raman stretching modes at 804 and 713 cm-1. The 2.71 eV indirect energy gap, and 430-460 nm blue emission wavelength range of WO3 complete rectangular nanoplates were determined using UV-visible and photoluminescence (PL) spectrometers. The formation mechanism was also proposed according to the experimental results. © 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
format	Article
author	Sungpanich J. Thongtem T. Thongtem S.
spellingShingle	Sungpanich J. Thongtem T. Thongtem S. Large-scale synthesis of WO3 nanoplates by a microwave-hydrothermal method
author_facet	Sungpanich J. Thongtem T. Thongtem S.
author_sort	Sungpanich J.
title	Large-scale synthesis of WO3 nanoplates by a microwave-hydrothermal method
title_short	Large-scale synthesis of WO3 nanoplates by a microwave-hydrothermal method
title_full	Large-scale synthesis of WO3 nanoplates by a microwave-hydrothermal method
title_fullStr	Large-scale synthesis of WO3 nanoplates by a microwave-hydrothermal method
title_full_unstemmed	Large-scale synthesis of WO3 nanoplates by a microwave-hydrothermal method
title_sort	large-scale synthesis of wo3 nanoplates by a microwave-hydrothermal method
publishDate	2014
url	http://www.scopus.com/inward/record.url?eid=2-s2.0-83555174770&partnerID=40&md5=f16ce1acc063620ec4f228bb86e36de3 http://cmuir.cmu.ac.th/handle/6653943832/5990
_version_	1681420529542627328

Large-scale synthesis of WO3 nanoplates by a microwave-hydrothermal method

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