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Lee, Jae Sung
Eco-friendly Catalysis and Energy Lab
Research Interests
  • Photocatalytic water splitting, artificial photosynthesis, fuel cells, heterogeneous catalysis

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Hydrothermal synthesis of monoclinic WO3 nanoplates and nanorods used as an electrocatalyst for hydrogen evolution reactions from water

Cited 28 times inthomson ciCited 26 times inthomson ci
Title
Hydrothermal synthesis of monoclinic WO3 nanoplates and nanorods used as an electrocatalyst for hydrogen evolution reactions from water
Other Titles
Hydrothermal synthesis of monoclinic WO3 nanoplates and nanorods used as an electrocatalyst for hydrogen evolution reactions from water
Author
Ham, Dong JinPhuruangrat, AnukornThongtem, SomchaiLee, Jae Sung
Keywords
Monoclinic WO3; Nanorods; Nanoplates; Hydrothermal reaction; Hydrogen evolution reaction
Issue Date
2010-11
Publisher
ELSEVIER SCIENCE SA
Citation
CHEMICAL ENGINEERING JOURNAL, v.165, no.1, pp.365 - 369
Abstract
Monoclinic WO3 (m-WO3) nanoplates and nanorods were successfully synthesized by a simple hydrothermal process using sodium tungstate dihydrate (Na2WO4 2H(2)O) 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 NH4NO3 concentration on the formation of the pure phase of m-WO3 nanomaterial was studied The product synthesized under NH4NO3-free condition was pure orthorhombic WO3 0 33H(2)O (o-WO3 0 33H(2)O) phase By adding and increasing the amount of NH4NO3 to the solution m-WO3 phase started to form and became pure m-WO3 phase when 1 50 g NH4NO3 was used The morphology of m-WO3 was nanoplates and became nanorods by PEG adding The nanostructured m-WO3 showed much higher electrocatalytic activity for hydrogen evolution from water than that of the commercial bulk m-WO3 including the m-WO3 nanorods with slightly better than the m-WO3 nanoplates (C) 2010 Elsevier B V All rights reserve
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DOI
10.1016/j.cej.2010.09.00
ISSN
1385-8947
Appears in Collections:
ECHE_Journal Papers
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