CuMnO2, a novel hydrogen photoevolution catalyst
Idioma
en
Article de revue
Este ítem está publicado en
International Journal of Hydrogen Energy. 2003, vol. 28, n° 1, p. 43-48
Elsevier
Resumen en inglés
Photocatalytic hydrogen production induced under illumination using a new oxide CuMnO2 has been studied. The applied catalyst was without noble metal. The hydrogen was generated from aqueous solution containing either S2− ...Leer más >
Photocatalytic hydrogen production induced under illumination using a new oxide CuMnO2 has been studied. The applied catalyst was without noble metal. The hydrogen was generated from aqueous solution containing either S2− or SO2−3 . The conduction band of CuMnO2, with a value of −0:88 V=SCE, allows a spontaneous hydrogen formation. The highest hydrogen evolution rate was 0:95 × 10−2 ml mg−1 h−1 on the crednerite CuMnO2-E obtained by exchange reaction with SO2−3 as hole scavenger. When S2− was used, the hydrogen production reaches a saturation attributed to the competitive reduction of yellow polysulfides Sn2− as well as their strong light absorption in the visible region. There was no photoactivity observed below pH 12.< Leer menos
Palabras clave en inglés
Crednerite
Photocatalysis
Hydrogen
Polysulfide
p/n-photochemical diode
Orígen
Importado de HalCentros de investigación