The effect of WO[sub 3] on the photocatalytic activity of TiO[sub 2]

Journal Article · Sat Jan 01 00:00:00 EST 1994 · Journal of Solid State Chemistry; (United States)

DOI:https://doi.org/10.1006/jssc.1994.1031· OSTI ID:7283740

Do, Y R; Lee, W; Dwight, K; Wold, A ^[1]

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1. Brown Univ., Providence, RI (United States)

Samples of WO[sub 3]/TiO[sub 2] mixed oxide powders were prepared by two methods: (1) the incipient wetness impregnation of an aqueous ammonia solution of H[sub 2]WO[sub 4] onto TiO[sub 2] (P25), followed by heart treatment and (2) the ultrasonic nebulization and flame hydrolysis of a mixed isopropanol solution of tungsten(V)pentaethoxide and titanium(IV)tetraisopropoxide. The photocatalytic activities of TiO[sub 2]-based catalysts were evaluated by the degradation of 1,4-dichlorobenzene (DCB). The addition of WO[sub 3] to TiO[sub 2] greatly increased its photocatalytic behavior. This may be related to an increase in the transfer of electrons from the TiO[sub 2] to the outer system, via the formation of an intermediate W(V) species.

• OSTI ID: 7283740
• Journal Information: Journal of Solid State Chemistry; (United States), Vol. 108:1; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CHLORINATED AROMATIC HYDROCARBONS
PHOTOCHEMICAL REACTIONS
TITANIUM OXIDES
CATALYTIC EFFECTS
TUNGSTEN OXIDES
HETEROGENEOUS CATALYSIS
PHASE STUDIES
AROMATICS
CATALYSIS
CHALCOGENIDES
CHEMICAL REACTIONS
HALOGENATED AROMATIC HYDROCARBONS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
REFRACTORY METAL COMPOUNDS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TUNGSTEN COMPOUNDS
400500* - Photochemistry