Polyol mediated synthesis of tungsten trioxide and Ti doped tungsten trioxide

Journal Article · Thu Aug 10 00:00:00 EDT 2006 · Materials Research Bulletin

DOI:https://doi.org/10.1016/j.materresbull.2006.01.030· OSTI ID:20895249

Porkodi, P ^[1]; Yegnaraman, V ^[1]; Jeyakumar, D ^[1]

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1. Electrodics and Electrocatalysis Division, Central Electrochemical Research Institute, Karaikudi 630006 (India)

Polyol mediated synthesis for the preparation of tungsten trioxide and titanium doped tungsten trioxide has been reported. The reaction was carried out using chlorides of tungsten and titanium in diethylene glycol medium and water as the reagent for hydrolysis at 190 deg. C. Formation of a blue coloured dimensionally stable suspension of the precursor materials was observed during the course of the reaction. The particle sizes of the precursor materials were observed to be around 100 nm. The precursor materials were annealed to give tungsten trioxide and titanium doped tungsten trioxide. The precursor materials were characterised using TGA/DTA, FT-IR, optical spectra, SEM, TEM and powder XRD methods. It was observed that the doping of titanium could be effected at least up to 10% of Ti in WO{sub 3}. The TGA/DTA studies indicated that WO{sub 3-x}.H{sub 2}O is the dominant material that formed during the polyol mediated synthesis. The XRD data of the annealed samples revealed that the crystalline phase could be manipulated by varying the extent of titanium doping in the tungsten trioxide matrix.

• OSTI ID: 20895249
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 8 Vol. 41; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION SPECTROSCOPY
ANNEALING
CHEMICAL PREPARATION
CHLORIDES
DIFFERENTIAL THERMAL ANALYSIS
DOPED MATERIALS
FOURIER TRANSFORMATION
GLYCOLS
HYDROLYSIS
INFRARED SPECTRA
PARTICLE SIZE
PRECURSOR
SCANNING ELECTRON MICROSCOPY
SEMICONDUCTOR MATERIALS
THERMAL GRAVIMETRIC ANALYSIS
TITANIUM
TUNGSTATES
TUNGSTEN OXIDES
X-RAY DIFFRACTION