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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Decoration of Ti/TiO2 nanotubes with Pt nanoparticles for enhanced UV-Vis light absorption in photoelectrocatalytic process

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Author(s):
Lucio C. Almeida [1] ; Maria V. B. Zanoni [1]
Total Authors: 2
Affiliation:
[1] Univ Estadual Paulista Julio Mesquita Filho UNESP, Dept Quim, Inst Quim, BR-14800900 Araraquara, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Journal of the Brazilian Chemical Society; v. 25, n. 3, p. 579-588, 2014-03-00.
Abstract

Pt nanoparticles were decorated on TiO2 nanotube arrays (TiO2NTs) by cathodic deposition. These nanoparticles were uniformly distributed, highly separated and spaced all over TiO2NT surface to shorten deposition times with Pt particle sizes proportional to the applied charges. The Pt/TiO2NT photoelectrode shows an intense absorption peak in the visible region with a significant red shift induced by Pt deposited on TiO2NT surface, decreasing the band gap energy from 3.21 eV to 2.87 eV. Pt/TiO2NT photoelectrode was tested as photoanode in the photoeletrocatalytic oxidation of Acid Red 29 dye with great success. Total decolorization and 92% of total organic carbon removal were obtained after 120 min of treatment by using Pt/TiO2NT photoelectrode which was superior to the values obtained for the undecorated one (87% and 68%, respectively) due to better use of irradiation and minimization of charge recombination. (AU)

FAPESP's process: 11/21606-9 - Synthesis and characterization of Ti/TiO2-Pt and Ti/TiO2/WO3 photoanodes for application in the degradation of VAT dyes by photoelectro-Fenton process
Grantee:Lucio César de Almeida
Support Opportunities: Scholarships in Brazil - Post-Doctoral