Free-polymer controlling morphology of alpha-MoO3 nanobelts by a facile hydrothermal synthesis, their electrochemistry for hydrogen evolution reactions and optical properties
SCIE
SCOPUS
- Title
- Free-polymer controlling morphology of alpha-MoO3 nanobelts by a facile hydrothermal synthesis, their electrochemistry for hydrogen evolution reactions and optical properties
- Authors
- Sinaim, H; Ham, DJ; Lee, JS; Phuruangrat, A; Thongtem, S; Thongtem, T
- Date Issued
- 2012-03-05
- Publisher
- ELSEVIER SCIENCE SA
- Abstract
- Orthorhombic molybdenum oxide (alpha-MoO3) nanobelts were successfully synthesized by the 100-180 degrees C and 2-20 h hydrothermal reactions of (NH4) 6Mo7O24 center dot 4H(2)O solutions containing 15 ml 2 M acid (HNO3, H2SO4 or HCl) with no surfactant and template adding. These products were characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) and Raman spectroscopy, and electron microscopy (EM). In the present research, the product synthesized by the 180 degrees C and 20 h hydrothermal reaction of the solution containing HNO3 was alpha-MoO3 nanobelts with >10 mu m long and <200 nm wide. Electrochemistry for hydrogen evolution reactions (HER) and optical properties of the as-synthesized alpha-MoO3 nanobelts were characterized by linear sweep voltammetry (LSV) and Tafel plot, including UV-vis and photoluminescence (PL) spectroscopy. These imply that alpha-MoO3 nanobelts show satisfied performance for HER, with the 3.75 eV direct allowed band gap (E-g) due to the charged transition of O-2p -> Mo-4d, including the emission of 437 nm wavelength at room temperature. (C) 2011 Elsevier B. V. All rights reserved.
- Keywords
- Hydrothermal synthesis; alpha-MoO3 nanobelts; Hydrogen evolution reactions; Optical properties; MOLYBDENUM TRIOXIDE; MOO3 NANOBELTS; LITHIUM BATTERY; NANORODS; FABRICATION; SURFACTANT; ROUTE; NANOFIBERS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/16503
- DOI
- 10.1016/J.JALLCOM.2011.12.024
- ISSN
- 0925-8388
- Article Type
- Article
- Citation
- JOURNAL OF ALLOYS AND COMPOUNDS, vol. 516, page. 172 - 178, 2012-03-05
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.