A facile synthesis of mesoporous NiO nanosheets and their application in CO oxidation

Mesoporous NiO nanosheets were prepared by a facile sol-gel process using Aerosol-OT, Bis(2-ethyl hexyl) sulfosuccinate sodium salt (AOT) as anionic surfactant. The products were analyzed by XRD, Raman spectroscopy, N-2 adsorption-desorption, FESEM and TEM studies. The morphology and textural properties of the products were tuned by using different amounts of the surfactant. TEM images exhibited nanosheets particles of thickness 80-100 nm in which nanograins (10-20 nm) were assembled. A probable mechanism was illustrated for the formation of NiO nanosheets. Catalytic activity for CO oxidation was performed with the synthesized products. The nanosheet particles obtained in the presence of 1 mmol AOT with the surface area of 88.23 m(2) g(-1) exhibited the better CO oxidation, i.e., T-50 (50% conversion) and T-100 (100% conversion) were at 245 degrees C and 288 degrees C, respectively. (C) 2016 The Ceramic Society of Japan and the Korean Ceramic Society. Production and hosting by Elsevier B.V.