Enhancement of photocatalytic activity of TiO2 by adsorbed aluminium(III)

M I Franch, J Peral, X Domenech, R F Howe, J A Ayllon

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The photocatalytic activity of TiO2 (Degussa P-25) in the mineralization of maleic acid in aqueous solution at pH = 3 is greatly enhanced by the previous adsorption of alummium(III) on the catalyst surface. The nature of the intermediates detected during maleic acid degradation is also affected by the presence of Al(III). The observed differences can be related to an oxygen reactivity enhancement. The effect of aluminium(III) in the maleic acid adsorption over the TiO2 surface has also been investigated by using the ATR-FT-IR technique. The UV-vis diffuse reflectance spectra of the catalyst shows a red shift due to aluminium adsorption. At neutral pH, the positive effect of adsorbed Al(III) is not observed. (C) 2004 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)105-113
Number of pages9
JournalApplied Catalysis B: Environmental
Volume55
DOIs
Publication statusPublished - 2005

Keywords

  • photocatalysis
  • aluminium(III)
  • maleic acid degradation
  • TRANSITION-METAL IONS
  • SEMICONDUCTOR PHOTOCATALYSIS
  • CATALYTIC ACTIVITY
  • TITANIUM-DIOXIDE
  • ACID
  • DEGRADATION
  • ADSORPTION
  • OXIDATION
  • WATER
  • OXYGEN

Cite this

Enhancement of photocatalytic activity of TiO2 by adsorbed aluminium(III). / Franch, M I ; Peral, J ; Domenech, X ; Howe, R F ; Ayllon, J A .

In: Applied Catalysis B: Environmental, Vol. 55, 2005, p. 105-113.

Research output: Contribution to journalArticle

Franch, M I ; Peral, J ; Domenech, X ; Howe, R F ; Ayllon, J A . / Enhancement of photocatalytic activity of TiO2 by adsorbed aluminium(III). In: Applied Catalysis B: Environmental. 2005 ; Vol. 55. pp. 105-113.
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AU - Franch, M I

AU - Peral, J

AU - Domenech, X

AU - Howe, R F

AU - Ayllon, J A

PY - 2005

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N2 - The photocatalytic activity of TiO2 (Degussa P-25) in the mineralization of maleic acid in aqueous solution at pH = 3 is greatly enhanced by the previous adsorption of alummium(III) on the catalyst surface. The nature of the intermediates detected during maleic acid degradation is also affected by the presence of Al(III). The observed differences can be related to an oxygen reactivity enhancement. The effect of aluminium(III) in the maleic acid adsorption over the TiO2 surface has also been investigated by using the ATR-FT-IR technique. The UV-vis diffuse reflectance spectra of the catalyst shows a red shift due to aluminium adsorption. At neutral pH, the positive effect of adsorbed Al(III) is not observed. (C) 2004 Elsevier B.V. All rights reserved.

AB - The photocatalytic activity of TiO2 (Degussa P-25) in the mineralization of maleic acid in aqueous solution at pH = 3 is greatly enhanced by the previous adsorption of alummium(III) on the catalyst surface. The nature of the intermediates detected during maleic acid degradation is also affected by the presence of Al(III). The observed differences can be related to an oxygen reactivity enhancement. The effect of aluminium(III) in the maleic acid adsorption over the TiO2 surface has also been investigated by using the ATR-FT-IR technique. The UV-vis diffuse reflectance spectra of the catalyst shows a red shift due to aluminium adsorption. At neutral pH, the positive effect of adsorbed Al(III) is not observed. (C) 2004 Elsevier B.V. All rights reserved.

KW - photocatalysis

KW - aluminium(III)

KW - maleic acid degradation

KW - TRANSITION-METAL IONS

KW - SEMICONDUCTOR PHOTOCATALYSIS

KW - CATALYTIC ACTIVITY

KW - TITANIUM-DIOXIDE

KW - ACID

KW - DEGRADATION

KW - ADSORPTION

KW - OXIDATION

KW - WATER

KW - OXYGEN

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DO - 10.1016/j.apcatb.2004.07.006

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JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

SN - 0926-3373

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