H2 evolution from H2O/H2O2/MWO4 (M = Fe2+, Co2+, Ni2+) systems was studied for the first time. The MWO4 (M = Fe2+, Co2+, Ni2+) powders were synthesized by a salt aqueous solution reaction followed by calcination. The light band gaps of the FeWO4, CoWO4, and NiWO4 powders determined from UV–vis absorption spectra were 1.83, 2.58, and 2.86 eV, respectively. The experiment on the H2 evolution from H2O/H2O2/MWO4 (M = Fe2+, Co2+, Ni2+) systems indicated that the efficiency increased in order of FeWO4 > CoWO4 > NiWO4 and was larger under sunlight with strong intensity than under visible light.
Research on Chemical Intermediates – Springer Journals
Published: Feb 14, 2013
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