Facile synthesis of mesoporous ncCoW powder via electrodeposition; characterization and its efficient application on hydrogen generation and organic pollutants reduction

Abstract

The electrolytic deposition method, which generates a high-purity powder, is one of the most promising, easy-touse, and rapid techniques to produce nanopowder. In the current study, an electrolytic solution was suggested to easily synthesize ultrafine mesoporous CoW nanopowder. The W content is in the range of 1.5-7.5 %, based on the operating circumstances. XRD patterns show that the powder annealed at 873 K consists mainly of cubic Co3O4 and CoO phases, in addition to a small amount of monoclinic CoWO4 phases. TEM analysis of the resultant powder’s particle size indicated an average value of 4.0 nm. In tests to reduce organic pollutants like p-NP, the hydrolysis of SB using the nanopowder as a catalyst released a lot of hydrogen. The p-NP and dye reduction kinetics conformed to a pseudo-first-order model. The higher W% in the prepared CoW powder can improve the catalytic efficiency of dye reduction and accelerate the process. The recyclability and stability of catalysts explore that the powder shows promising efficiency toward significant applications in industrial catalysis and dye reduction.