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Synthesis of YCrO3 nanoparticles through PAA assisted sol–gel route

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Abstract

We report the synthesis of nanocrystalline phase-pure YCrO3 powders by a poly acrylic acid (PAA) assisted sol–gel process at a comparatively low calcination temperature of 600 °C. The role of PAA in the powder processing was investigated systemically using Fourier transform infrared (FTIR) spectroscopy, differential thermal and thermogravimetric analyzer (DT/TGA), X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). PAA is found to have the desirable property of forming stable complexes with the cations, Y3+ and Cr3+ at a low pH. FTIR results demonstrated that in the gel-precursor, the carboxylate groups of PAA bond to Y3+ and Cr3+ in a monodentate and a bridging bidentate configuration, respectively, owing to the properties of Cr3+ giving the best correlation with PAA. The obtained particles have capsule-like morphology with a mean diameter of 40 nm. It is presumed that this morphology is due to the extended-chain configuration of PAA in the aqueous solution. The method showed a good control over particle size, morphology, chemical homogeneity, stoichiometry and agglomeration of the powders.

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Acknowledgments

We thank Mr. Hideo Nishioka of JEOL Limited, Japan for providing the TEM support. Financial assistances from UGC-Govt. of India through SAP and DST-Govt. of India through FIST Program are gratefully acknowledged.

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Authors and Affiliations

  1. School of Pure and Applied Physics, Mahatma Gandhi University, Kottayam, 686560, Kerala, India

    Shiji Krishnan & Nandakumar Kalarikkal

  2. Center for Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam, 686560, Kerala, India

    Nandakumar Kalarikkal

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  1. Shiji Krishnan
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Correspondence to Nandakumar Kalarikkal.

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Krishnan, S., Kalarikkal, N. Synthesis of YCrO3 nanoparticles through PAA assisted sol–gel route. J Sol-Gel Sci Technol 66, 6–14 (2013). https://doi.org/10.1007/s10971-013-2959-z

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