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

The important challenge in photocatalysis is to find efficient and stable photocatalysts under visible light. Small Bi zero-valent clusters were synthesized on TiO 2 -P25 by radiolysis. Photocatalytic tests were conducted under UV, visible and solar light with rhodamine B and phenol as model polluta...

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Bibliographic Details
Published inNew journal of chemistry Vol. 39; no. 3; pp. 2316 - 2322
Main Authors Kouamé, Natalie A., Alaoui, Ouafa Tahiri, Herissan, Alexandre, Larios, Eduardo, José-Yacaman, Miguel, Etcheberry, Arnaud, Colbeau-Justin, Christophe, Remita, Hynd
Format Journal Article
LanguageEnglish
Published 01.01.2015
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Summary:The important challenge in photocatalysis is to find efficient and stable photocatalysts under visible light. Small Bi zero-valent clusters were synthesized on TiO 2 -P25 by radiolysis. Photocatalytic tests were conducted under UV, visible and solar light with rhodamine B and phenol as model pollutants. Surface modification of TiO 2 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 TiO 2 . These photocatalysts are very stable with cycling.
ISSN:1144-0546
1369-9261
DOI:10.1039/C4NJ01979B