Hydrogen photoproduction from hydrogen sulfide on Bi2S3 catalyst

Bessekhouad, Y.; Mohammedi, M; Trari, M.

doi:10.1016/s0927-0248(01)00218-5

Cited by 102 publications

(45 citation statements)

References 10 publications

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“…Over illumination time, the color deepens continuously and attenuates the light flux reaching the powder, an evidence of S n 2− formation as proved by the increase of the absorbance ( (Abs) = 0.07 for V (H 2 ) = 1.8 cm 3 ). 2 The light absorption of S n 2− is concentration dependent, at 520 nm ∼60% transmission for 11 mm path length is reported in a solution 0.1 M S n 2− . This is consistent with the idea that molecular hydrogen is intercalated in the layered host network.…”

Section: Resultsmentioning

confidence: 94%

“…The volume of hydrogen is larger at pH 13.1 because the band bending ˚is larger. The fact the photoactivity depends on pH could be a further argument in favor of the reaction (3) over the reaction (2). In addition the potential of the couple SO 3 2− /S 2 O 4 2− is located above VB and cannot be involved through VB process.…”

Section: Resultsmentioning

confidence: 99%

“…Hydrogen photogeneration from water over semiconductors (SC) has been the subject of many studies [1] and remains an attractive target and an ideal way of storing solar energy [2,3]. Accordingly, the development of new photoelectrode materials continue to attract great attention as an alternative for the light energy conversion [4].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Photoelectrochemical hydrogen-evolution over p-type chalcopyrite CuInSe2

Djellal

Omeiri

Bouguelia

et al. 2009

Journal of Alloys and Compounds

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Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Photoelectrochemical hydrogen-evolution over p-type chalcopyrite CuInSe2

Djellal

Omeiri

Bouguelia

et al. 2009

Journal of Alloys and Compounds

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“…Films of Bi 2 S 3 with E g = 1.28 eV on platinum and bismuth, which are active in the release of hydrogen from solutions of Na 2 S by the action of visible light, were obtained by electrodeposition [173].…”

Section: Ways Of Improving Photocatalytic Systems Based On Metal-sulfmentioning

confidence: 99%

Semiconductor photocatalytic systems for the production of hydrogen by the action of visible light

et al. 2009

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Data on investigations of recent years on the creation of semiconductor photocatalytic systems for the production of hydrogen from water and aqueous solutions of electron-donating substrates are reviewed. Physicochemical approaches to extending the range of spectral sensitivity of the semiconductors (the use of sensitizers, semiconducting heterostructures, doping with metals and metalloids) are examined. Possible ways of improving the photocatalytic systems for the production of hydrogen with metal-sulfide and other types of semiconductors are analyzed. A general description of the advances and planned developments in the creation of photocatalytic converters of solar energy is given.

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“…This problem can be solved with metal sulfides, whose bandgaps are much smaller [37][38][39][40][41][42][43][44][45][46][47][48]. However, because sulfides undergo photocorrosion under bandgap irradiation [49][50][51], sacrificial electron donors, such as Na 2 S and Na 2 SO 3 [40,42], are necessary to maintain catalytic activity.…”

Section: Cdse Nanoribbons As a Quantum-confinedmentioning

confidence: 99%

Nanoparticle-Assembled Catalysts for Photochemical Water Splitting

Osterloh

On Solar Hydrogen &Amp; Nanotechnology

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Over 130 materials are known to catalyze the conversion of water to hydrogen and oxygen (Equation 16.1) [1], but most of them are plagued by either low energy efficiency, inadequate light absorption in the visible range, or material instability under catalytic conditions.DG ¼ þ 237 kJmol À1 ð1:3 eVe À1 ; l min ¼ 1100 nmÞ ð16:1ÞThese issues can potentially be solved with nanostructured catalysts that contain separate components for light absorption, water oxidation and water reduction. By building these structures in modular fashion from separate, preformed nanoparticles, it should be possible to optimize the catalytic function by adjusting the discrete properties of the various components. The working cycle of a hypothetical three-component catalyst is illustrated in Figure 16.1a. As the first step, bandgap absorption of a photon produces an electron-hole pair in the semiconductor (step 1 in Figure 16.1a). The pair becomes separated at the nanointerface, with the electron being guided (step 2) along a path of decreasing energy to the metal particle, where it enters an energy level above the Fermi level and becomes available as a reducing agent for water (step 3). If this step is fast enough (<50 ps), it will prevent recombination of the electron-hole pair -a limiting factor for water-splitting photocatalysts. Subsequently, an electron from the valence band of the metal-oxide particle is injected into

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Hydrogen photoproduction from hydrogen sulfide on Bi2S3 catalyst

Cited by 102 publications

References 10 publications

Photoelectrochemical hydrogen-evolution over p-type chalcopyrite CuInSe2

Photoelectrochemical hydrogen-evolution over p-type chalcopyrite CuInSe2

Semiconductor photocatalytic systems for the production of hydrogen by the action of visible light

Nanoparticle-Assembled Catalysts for Photochemical Water Splitting

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