Hydrothermal synthesis of monoclinic WO<inf>3</inf>nanoplates and nanorods used as an electrocatalyst for hydrogen evolution reactions from water

Monoclinic WO3(m-WO3) nanoplates and nanorods were successfully synthesized by a simple hydrothermal process using sodium tungstate dihydrate (Na2WO4·2H2O), ammonium nitrate (NH4NO3) and polyethylene glycol (PEG) as initial precursors. Phase, morphologies and electrochemical properties of the produc...

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Main Authors: Dong Jin Ham, Anukorn Phuruangrat, Somchai Thongtem, Jae Sung Lee
Format: Journal
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/50633
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-506332018-09-04T04:46:58Z Hydrothermal synthesis of monoclinic WO<inf>3</inf>nanoplates and nanorods used as an electrocatalyst for hydrogen evolution reactions from water Dong Jin Ham Anukorn Phuruangrat Somchai Thongtem Jae Sung Lee Chemical Engineering Chemistry Engineering Environmental Science Monoclinic WO3(m-WO3) nanoplates and nanorods were successfully synthesized by a simple hydrothermal process using sodium tungstate dihydrate (Na2WO4·2H2O), ammonium nitrate (NH4NO3) and polyethylene glycol (PEG) as initial precursors. Phase, morphologies and electrochemical properties of the products were characterized by X-ray diffraction (XRD), scanning and transmission electron microscopy (SEM, TEM), high-resolution transmission electron microscopy (HRTEM), cyclic voltammetry (CV) and linear sweep voltammetry (LSV). The effect of NH4NO3concentration on the formation of the pure phase of m-WO3nanomaterial was studied. The product synthesized under NH4NO3-free condition was pure orthorhombic WO3·0.33H2O (o-WO3·0.33H2O) phase. By adding and increasing the amount of NH4NO3to the solution, m-WO3phase started to form and became pure m-WO3phase when 1.50g NH4NO3was used. The morphology of m-WO3was nanoplates, and became nanorods by PEG adding. The nanostructured m-WO3showed much higher electrocatalytic activity for hydrogen evolution from water than that of the commercial bulk m-WO3, including the m-WO3nanorods with slightly better than the m-WO3nanoplates. © 2010 Elsevier B.V. 2018-09-04T04:43:12Z 2018-09-04T04:43:12Z 2010-11-15 Journal 13858947 2-s2.0-78149498974 10.1016/j.cej.2010.09.003 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=78149498974&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/50633
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Chemical Engineering
Chemistry
Engineering
Environmental Science
spellingShingle Chemical Engineering
Chemistry
Engineering
Environmental Science
Dong Jin Ham
Anukorn Phuruangrat
Somchai Thongtem
Jae Sung Lee
Hydrothermal synthesis of monoclinic WO<inf>3</inf>nanoplates and nanorods used as an electrocatalyst for hydrogen evolution reactions from water
description Monoclinic WO3(m-WO3) nanoplates and nanorods were successfully synthesized by a simple hydrothermal process using sodium tungstate dihydrate (Na2WO4·2H2O), ammonium nitrate (NH4NO3) and polyethylene glycol (PEG) as initial precursors. Phase, morphologies and electrochemical properties of the products were characterized by X-ray diffraction (XRD), scanning and transmission electron microscopy (SEM, TEM), high-resolution transmission electron microscopy (HRTEM), cyclic voltammetry (CV) and linear sweep voltammetry (LSV). The effect of NH4NO3concentration on the formation of the pure phase of m-WO3nanomaterial was studied. The product synthesized under NH4NO3-free condition was pure orthorhombic WO3·0.33H2O (o-WO3·0.33H2O) phase. By adding and increasing the amount of NH4NO3to the solution, m-WO3phase started to form and became pure m-WO3phase when 1.50g NH4NO3was used. The morphology of m-WO3was nanoplates, and became nanorods by PEG adding. The nanostructured m-WO3showed much higher electrocatalytic activity for hydrogen evolution from water than that of the commercial bulk m-WO3, including the m-WO3nanorods with slightly better than the m-WO3nanoplates. © 2010 Elsevier B.V.
format Journal
author Dong Jin Ham
Anukorn Phuruangrat
Somchai Thongtem
Jae Sung Lee
author_facet Dong Jin Ham
Anukorn Phuruangrat
Somchai Thongtem
Jae Sung Lee
author_sort Dong Jin Ham
title Hydrothermal synthesis of monoclinic WO<inf>3</inf>nanoplates and nanorods used as an electrocatalyst for hydrogen evolution reactions from water
title_short Hydrothermal synthesis of monoclinic WO<inf>3</inf>nanoplates and nanorods used as an electrocatalyst for hydrogen evolution reactions from water
title_full Hydrothermal synthesis of monoclinic WO<inf>3</inf>nanoplates and nanorods used as an electrocatalyst for hydrogen evolution reactions from water
title_fullStr Hydrothermal synthesis of monoclinic WO<inf>3</inf>nanoplates and nanorods used as an electrocatalyst for hydrogen evolution reactions from water
title_full_unstemmed Hydrothermal synthesis of monoclinic WO<inf>3</inf>nanoplates and nanorods used as an electrocatalyst for hydrogen evolution reactions from water
title_sort hydrothermal synthesis of monoclinic wo<inf>3</inf>nanoplates and nanorods used as an electrocatalyst for hydrogen evolution reactions from water
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=78149498974&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/50633
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