Abstract
Nanocrystalline nickel manganite (NiMn2O4) was prepared by sol-gel method by using nickel chloride hexahydrate, manganese nitrate and different surfactants. This study aimed to investigate the effects of different surfactants such as polyvinylpyrrolidone, sodium dodecyl sulfate, and cetyl trimethyl ammonium bromide on the morphology, particle size, and crystal structure of final products. According to the vibrating sample magnetometer, NiMn2O4 nanoparticles indicated a superparamagnetic behavior at room temperature. X-ray diffraction, scanning electron microscopy, energy dispersive X-ray microanalysis and ultraviolet–visible spectroscopy were employed to characterize structural, morphological, and optical properties of NiMn2O4 nanoparticles. Furthermore, the photocatalytic properties of as synthesized NiMn2O4 were evaluated by degradation of methyl orange as water contaminant.
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