Abstract
Different nickel oxide catalysts have been prepared by simple precipitation method using different nickel precursors and using surfactant sodium dodecyl sulfate (SDS) or without surfactant. The prepared catalysts have been characterized by using XRD and FT-IR. The particle sizes have been calculated by using the Scherrer equation. The nickel oxide catalyst prepared by using nickel acetate as precursor and surfactant SDS has shown less particle size as compared to other catalysts prepared by using other precursors. Also, nickel oxide catalyst prepared using nickel acetate precursor and surfactant SDS has shown higher catalytic activity for reduction of p-nitrophenol (PNP) to p-aminophenol (PAP) using sodium borohydride (NaBH 4 ). Also, for the said reaction effect of concentration of p-nitrophenol on catalytic efficiency has been studied.
Highlights
Countless chemical protocols have been depended upon the catalysis, and the catalysts play a crucial role in the production and manufacture of chemicals and materials because catalytic reactions generally occur under milder conditions compared to the noncatalytic reactions.[1,2,3]
Amount of 6.34 g of surfactant sodium dodecyl sulfate has been added to above-mentioned nickel acetate solution with continuous stirring
XRD was used for the identification of phase and size of Nickel oxide (NiO) material and gives information on unit cell dimensions
Summary
Countless chemical protocols have been depended upon the catalysis, and the catalysts play a crucial role in the production and manufacture of chemicals and materials because catalytic reactions generally occur under milder conditions compared to the noncatalytic reactions.[1,2,3] The use of heterogeneous catalysts is one of the best attractive alternatives for synthetic strategies and adopted by organic chemists for increasing the efficiency of a wide range of organic reactions.[4]Recently, transition metal oxides as catalysts are to tailor and design according to their sizes, structure in nanodimensions and their surface chemistry and catalytic properties.[5,6,7,8,9] An increasing number of illustrations are accessible in the literature where nickel-based nanoparticles have been used as catalysts during organic transformations.[10,11] pharmaceutically significant value-added products. We have been prepared NiO nanomaterials by simple precipitation method (with and without surfactant) using two different precursors (nickel acetate and nickel nitrate). Prepared catalysts were characterized by XRD, FTIR and applied for catalytic reduction of p-nitrophenol to paminophenol.es: Experimental Nickel oxide (NiO) is a p-type semiconductor material with magnetic power and wide band-gap energy (3.6-4.0 eV).
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