New Sulfide Photocatalysts Modified by NiS and Ni(OH)2 for Photocatalytic Hydrogen Production

The photocatalytic properties of Cd0.3Zn0.7S modified by nickel sulfide and nickel hydroxide were studied. The obtained samples were characterized by a wide range of experimental techniques including X-ray diffraction (XRD), UV-vis diffuse reflectance spectroscopy (DRS), and high resolution transmis...

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Bibliographic Details
Published in:Materials today : proceedings 2017, Vol.4 (11), p.11331-11335
Main Authors: Markovskaya, D.V., Gerasimov, E.Yu, Kozlova, E.A., Parmon, V.N
Format: Article
Language:English
Subjects:
Cd0.3Zn0.7S, nickel-based co-catalyst
Photocatalytic hydrogen production
visible light
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Summary:The photocatalytic properties of Cd0.3Zn0.7S modified by nickel sulfide and nickel hydroxide were studied. The obtained samples were characterized by a wide range of experimental techniques including X-ray diffraction (XRD), UV-vis diffuse reflectance spectroscopy (DRS), and high resolution transmission electron microscopy (HRTEM). The photocatalytic activity was measured in the hydrogen evolution from aqueous solutions of Na2S/Na2SO3 under visible light irradiation (λ = 450 nm). The highest photocatalytic activity and apparent quantum efficiency (AQE) were 6.12 mmol h-1 g-1 and 22.1%, respectively. A mechanism of the photoinduced transformations of the photocatalysts containing Ni(OH)2, NiS, and Ni3S2 during hydrogen production was proposed.
ISSN:2214-7853
2214-7853
DOI:10.1016/j.matpr.2017.09.003