Immobilisation of CdS, ZnS and mixed ZnS–CdS on filter paper: Effect of hydrogen production from alkaline Na2S/Na2S2O3 solution

The rate of production of molecular hydrogen upon illumination with solar radiation/visible light of immobilised CdS, ZnS and mixed CdS–ZnS on Whatman filter paper in Na2S/Na2SO3 solution have been studied. Enhancement of rate of hydrogen evolution has been observed by codeposited CdS with ZnS on Whatman filter paper. Mark enhancement in the rate of hydrogen liberation has been achieved by the catalyst at about 80 mol% Zn for a solid solution of Cadmium–Zinc sulphide embedded in Whatman filter paper.