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Role of Transition Metal-Hydroxide (M-OHx , M=Mn, Fe, Ni, Co) Co-catalyst Loading : Efficiency and Stability of CdS Photoanode

  • Alka Pareek (a1) (a2), Pradip Paik (a2) and Pramod H. Borse (a1)

Abstract

In this work we have synthesized the colloidal particles of transition metal-hydroxide (M= Ni, Co, Mn, Fe) by a simple chemical precipitation method. The surface of spray deposited CdS thin films were modified using nano-colloids to utlize them as water oxidation catalysts (WOC) for the photoelectrochemical cell (PEC). A systematic comparison of the PEC performance of modified and unmodified film is carried out to understand the role of co-catalyst. Ni(OH)2 modification yields 3.4 times higher photocurrent density than bare CdS photoanode, and exhibits hydrogen-evolution rate of 600 μmol/hr. Fe(OH)2 modified film shows best stability of 8 hours as compared to the others.

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Keywords

Role of Transition Metal-Hydroxide (M-OHx , M=Mn, Fe, Ni, Co) Co-catalyst Loading : Efficiency and Stability of CdS Photoanode

  • Alka Pareek (a1) (a2), Pradip Paik (a2) and Pramod H. Borse (a1)

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