2005
DOI: 10.1007/s10562-005-8013-1
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Preparation of Unique TiO2 Nano-particle Photocatalysts by a Multi-gelation Method for Control of the Physicochemical Parameters and Reactivity

Abstract: A novel multi-gelation method to prepare TiO 2 nano-particle photocatalysts showed good performance in controlling the important parameters determining the photocatalytic reactivity, i.e., the particle size, surface area, crystallinity, pore-volume, porediameter as well as the anatase and rutile phase composition of the catalysts. In particular, this method at higher pH swing times could prevent the phase transition from anatase to rutile, leading to higher photocatalytic activity. By adopting variations in th… Show more

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Cited by 33 publications
(23 citation statements)
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“…Our previous findings using the pH swing method also yielded TiO 2 samples with high surface area, pore size and pore volume [6]. In the earlier method, we alternated the addition of TiCl 4 (as an acid solution) and aqueous ammonia (as a basic solution) to water at regular intervals without adjusting the pH of the reaction mixture [6].…”
Section: Introductionmentioning
confidence: 99%
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“…Our previous findings using the pH swing method also yielded TiO 2 samples with high surface area, pore size and pore volume [6]. In the earlier method, we alternated the addition of TiCl 4 (as an acid solution) and aqueous ammonia (as a basic solution) to water at regular intervals without adjusting the pH of the reaction mixture [6].…”
Section: Introductionmentioning
confidence: 99%
“…Especially, in studies of environmental and electronic applications, TiO 2 nanoparticles show tremendous changes in activity. They are widely used in environmental cleaning processes as photocatalysts, in the fabrication of solar-fuel cells, light emitting diodes, and other useful applications [1][2][3][4][5][6][7][8][9][10]. In addition to environmental remediation processes, much attention has been focused on mesoporous TiO 2 for solar cells and fuel cells since TiO 2 nanoparticles are highly efficient materials [2][3][4][5].…”
Section: Introductionmentioning
confidence: 99%
“…• C and 30 pH swings [14], whereupon the anatase phase of TiO 2 changed to the rutile phase. When the catalysts were subjected to calcination above 600…”
Section: Resultsmentioning
confidence: 98%
“…• C, whereas with the flexible pH method (pH Fle) the anatase phase gradually increased with an increase in the number of pH swings [14]. For example, at 5 pH swings 3% anatase phase was formed for the pH Fle method calcined at 650…”
Section: Resultsmentioning
confidence: 99%
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