4.Preparation of nanoporous iron by dealloying and its catalytic performance for water splitting

Abstract:

Current industrial water splitting faces the challenge of excessively high practical reaction potentials. Catalytic materials capable of effectively lowering the actual reaction potential are generally expensive, creating an urgent need to develop cost-effective and efficient catalysts. Nanoporous iron was prepared using the dealloying method, and its catalytic performance was investigated. Nanoporous iron prepared at 650 ℃ and-0.2 V exhibited a specific surface area of 2.29 m2/g and an average pore size of 10.03 nm, with an OER potential of 1.58 V, which is only 0.35 V higher than the theoretical potential of water splitting(1.23 V). The results demonstrate that the nanoporous iron prepared in this work possesses excellent catalytic performance, effectively reducing the possibility of industrial water electrolysis. This provides an economical and efficient solution to the problem of high energy consumption in water electrolysis.

Keywords: dealloying;nanoporous iron;catalytic materials