Artículos de revistas
Photocatalytic Hydrogen Production Of Co(oh)2 Nanoparticle-coated α-fe2o3 Nanorings
Registro en:
Nanoscale. , v. 5, n. 19, p. 9310 - 9316, 2013.
20403364
10.1039/c3nr02195e
2-s2.0-84884217348
Autor
Wender H.
Goncalves R.V.
Dias C.S.B.
Zapata M.J.M.
Zagonel L.F.
Mendonca E.C.
Teixeira S.R.
Garcia F.
Institución
Resumen
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 α-Fe 2O3 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. 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