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

Photocatalytic hydrogen production of Co(OH)(2) nanoparticle-coated alpha-Fe2O3 nanorings

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Author(s):
Wender, Heberton [1] ; Goncalves, Renato V. [2] ; Dias, Carlos Sato B. [3, 1] ; Zapata, Maximiliano J. M. [2] ; Zagonel, Luiz F. [3] ; Mendonca, Edielma C. [1, 4] ; Teixeira, Sergio R. [2] ; Garcia, Flavio [1]
Total Authors: 8
Affiliation:
[1] Brazilian Synchrotron Natl Lab LNLS, CNPEM, BR-13083970 Campinas, SP - Brazil
[2] Univ Fed Rio Grande do Sul, Inst Fis, Lab Filmes Finos & Fabricao Nanoestruturas L3Fnan, BR-91501970 Porto Alegre, RS - Brazil
[3] Univ Estadual Campinas UNICAMP, Inst Fis Gleb Wataghin, BR-13083859 Campinas, SP - Brazil
[4] UFS, Itabaiana, SE - Brazil
Total Affiliations: 4
Document type: Journal article
Source: NANOSCALE; v. 5, n. 19, p. 9310-9316, 2013.
Web of Science Citations: 38
Abstract

The production of hydrogen from water using only a catalyst and solar energy is one of the most challenging and promising outlets for the generation of clean and renewable energy. Semiconductor photocatalysts for solar hydrogen production by water photolysis must employ stable, non-toxic, abundant and inexpensive visible-light absorbers capable of harvesting light photons with adequate potential to reduce water. Here, we show that alpha-Fe2O3 can meet these requirements by means of using hydrothermally prepared nanorings. These iron oxide nanoring photocatalysts proved capable of producing hydrogen efficiently without application of an external bias. In addition, Co(OH)(2) nanoparticles were shown to be efficient co-catalysts on the nanoring surface by improving the efficiency of hydrogen generation. Both nanoparticle-coated and uncoated nanorings displayed superior photocatalytic activity for hydrogen evolution when compared with TiO2 nanoparticles, showing themselves to be promising materials for water-splitting using only solar light. (AU)

FAPESP's process: 11/17402-9 - Development of multifunctional magnetic nanoparticles for cancer therapy
Grantee:Heberton Wender Luiz dos Santos
Support Opportunities: Regular Research Grants