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IJSTR >> Volume 8 - Issue 8, August 2019 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

A Novel Synthetic Route For Cerium Nickel Mixed Oxide (CeNi0.5Oy) Nanoparticles And Study Of Its Hydrogen Storage Property

[Full Text]



P.J. Elsa, C.B. Jeena, P.P. Moly, K.J. Ambily



CeNi0.5Oy mixed oxide nanoparticles, Co-precipitation, Oxalic acid, Hydrogen insertion, TPR



Cerium nickel mixed oxide nanoparticles (CeNi0.5Oy) were synthesized by a novel method involving co-precipitation of nickel dimethyl glyoxime and ceric hydroxide from a solution of ammonium cerium nitrate [(NH4)2Ce(NO3)4] and nickel nitrate [Ni(NO3)2] using dimethyl glyoxime and ammonium hydroxide as precipitating agents. The dried powder was then converted to mixed oxide (CeNi0.5Oy) by calcination in air at 500 �C for 2 hours. The calcined powder was characterized by X-ray Diffraction (XRD), FT-IR spectroscopy, UV-Vis absorption spectroscopy and Fluorescence spectroscopy. From the XRD data, the average primary crystallite size was found to be 4-5 nm. On heating with oxalic acid at 400 �C for 30 min, the CeNi0.5Oy powder was found to be partially reduced as evident from XRD data. The hydrogen insertion properties of the CeNi0.5Oy were studied by temperature-programmed reduction method (TPR), and maximum hydrogen of 22.46 mLg−1 (20 wt %) was found to be inserted at 468.6 �C.



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