Visible light-induced photocatalytic activity of modified titanium(IV) oxide with zero-valent bismuth clusters

Natalie A. Kouamé; Ouafa Tahiri Alaoui; Alexandre Herissan; Eduardo Larios; Miguel José-Yacaman; Arnaud Etcheberry; Christophe Colbeau-Justin; Hynd Remita

doi:10.1039/c4nj01979b

Visible light-induced photocatalytic activity of modified titanium(IV) oxide with zero-valent bismuth clusters

Natalie A. Kouamé, Ouafa Tahiri Alaoui, Alexandre Herissan, Eduardo Larios, Miguel José-Yacaman, Arnaud Etcheberry, Christophe Colbeau-Justin, Hynd Remita

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

The important challenge in photocatalysis is to find efficient and stable photocatalysts under visible light. Small Bi zero-valent clusters were synthesized on TiO₂-P25 by radiolysis. Photocatalytic tests were conducted under UV, visible and solar light with rhodamine B and phenol as model pollutants. Surface modification of TiO₂ with zero-valent Bi nanoclusters induces high photocatalytic activity under visible light. Very small amounts of Bi (0.5 wt%) can activate titania for photocatalytic applications under visible light. Time resolved microwave conductivity measurements indicate that under visible irradiation Bi nanoclusters inject electrons into the conduction band of TiO₂. These photocatalysts are very stable with cycling.

Original language	English (US)
Pages (from-to)	2316-2322
Number of pages	7
Journal	New Journal of Chemistry
Volume	39
Issue number	3
DOIs	https://doi.org/10.1039/c4nj01979b
State	Published - Mar 1 2015
Externally published	Yes

ASJC Scopus subject areas

Catalysis
General Chemistry
Materials Chemistry

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10.1039/c4nj01979b

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title = "Visible light-induced photocatalytic activity of modified titanium(IV) oxide with zero-valent bismuth clusters",

abstract = "The important challenge in photocatalysis is to find efficient and stable photocatalysts under visible light. Small Bi zero-valent clusters were synthesized on TiO2-P25 by radiolysis. Photocatalytic tests were conducted under UV, visible and solar light with rhodamine B and phenol as model pollutants. Surface modification of TiO2 with zero-valent Bi nanoclusters induces high photocatalytic activity under visible light. Very small amounts of Bi (0.5 wt%) can activate titania for photocatalytic applications under visible light. Time resolved microwave conductivity measurements indicate that under visible irradiation Bi nanoclusters inject electrons into the conduction band of TiO2. These photocatalysts are very stable with cycling.",

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T1 - Visible light-induced photocatalytic activity of modified titanium(IV) oxide with zero-valent bismuth clusters

AU - Kouamé, Natalie A.

AU - Alaoui, Ouafa Tahiri

AU - Herissan, Alexandre

AU - Larios, Eduardo

AU - José-Yacaman, Miguel

AU - Etcheberry, Arnaud

AU - Colbeau-Justin, Christophe

AU - Remita, Hynd

PY - 2015/3/1

Y1 - 2015/3/1

N2 - The important challenge in photocatalysis is to find efficient and stable photocatalysts under visible light. Small Bi zero-valent clusters were synthesized on TiO2-P25 by radiolysis. Photocatalytic tests were conducted under UV, visible and solar light with rhodamine B and phenol as model pollutants. Surface modification of TiO2 with zero-valent Bi nanoclusters induces high photocatalytic activity under visible light. Very small amounts of Bi (0.5 wt%) can activate titania for photocatalytic applications under visible light. Time resolved microwave conductivity measurements indicate that under visible irradiation Bi nanoclusters inject electrons into the conduction band of TiO2. These photocatalysts are very stable with cycling.

AB - The important challenge in photocatalysis is to find efficient and stable photocatalysts under visible light. Small Bi zero-valent clusters were synthesized on TiO2-P25 by radiolysis. Photocatalytic tests were conducted under UV, visible and solar light with rhodamine B and phenol as model pollutants. Surface modification of TiO2 with zero-valent Bi nanoclusters induces high photocatalytic activity under visible light. Very small amounts of Bi (0.5 wt%) can activate titania for photocatalytic applications under visible light. Time resolved microwave conductivity measurements indicate that under visible irradiation Bi nanoclusters inject electrons into the conduction band of TiO2. These photocatalysts are very stable with cycling.

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Visible light-induced photocatalytic activity of modified titanium(IV) oxide with zero-valent bismuth clusters

Abstract

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