Abstract
Since the late 1960s, ceric hydrogen phosphates have attracted the attention of scientists due to remarkable ion exchange, sorption, proton-conduction and catalytic properties. In this work, through the application of various solvents, we, for the first time, have obtained monolithic aerogels based on ceric hydrogen phosphates with high porosity (~99%) and extremely low density (~10 μg/cm3). The composition and structure of aerogels were thoroughly studied with XRD, TEM, SEM, XPS, low temperature nitrogen adsorption methods, TGA/DSC, Fourier-transform infrared spectroscopy (FTIR) and small-angle neutron scattering (SANS). The aerogels were found to belong to the fibrous macroporous aerogels family.
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Acknowledgements
We are grateful to Dr. O.V. Boytsova and Dr. N.P. Simonenko for their kind assistance. The effect of the supercritical fluid on the aerogels’ structure and composition was conducted with the support of the Russian Science Foundation (14-13-01150). This research was performed using the equipment of the JRC PMR IGIC RAS.
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Yorov, K.E., Shekunova, T.О., Baranchikov, А.Е. et al. First rare-earth phosphate aerogel: sol–gel synthesis of monolithic ceric hydrogen phosphate aerogel. J Sol-Gel Sci Technol 85, 574–584 (2018). https://doi.org/10.1007/s10971-018-4584-3
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DOI: https://doi.org/10.1007/s10971-018-4584-3