BESSEKHOUAD, Y.; TRARI, Mohamed; DOUMERC, Jean-Pierre

doi:10.1016/S0360-3199(02)00023-X

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BESSEKHOUAD, Y.
Laboratoire de Stockage et de Valorisation des Energies Renouvelables

TRARI, Mohamed
Laboratoire de Stockage et de Valorisation des Energies Renouvelables

DOUMERC, Jean-Pierre
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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International Journal of Hydrogen Energy. 2003, vol. 28, n° 1, p. 43-48

Elsevier

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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.< Réduire

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Photocatalysis

Hydrogen

Polysulfide

p/n-photochemical diode

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CuMnO2, a novel hydrogen photoevolution catalyst

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