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Cinnamát-réteges kettős hidroxid nanokompozitok készítése és jellemzése

Pannon Egyetem Műszaki Informatikai Kar Műszaki Kémiai Kutató Intézet
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  • Physics


Összefoglaló formai követelményei Műszaki Kémiai Napok 2010, Veszprém, Konferencia Kiadvány, ISBN 978-963-9696-93-8 Cinnamát−réteges kettős hidroxid nanokompozitok készítése és jellemzése The preparation and characterisation of cinnamate−L(ayered)D(ouble)H(ydroxide) nanocomposites Srankó Dávid1, Sipiczki Mónika2, Szabó Mária2, Kukovecz, Ákos3, Kónya Zoltán3, Sipos Pál1, Pálinkó István2 1Szervetlen és Analitikai Kémiai Tanszék, 2Szerves Kémiai Tanszék, 3Alkalmazott és Környezeti Kémiai Tanszék, Szegedi Tudományegyetem, Szeged, H-6720 Magyarország Summary The synthesis and characterisation of various organic-ionorganic nanohybrids are reported in this contribution. The host materials were Ca3Fe-L(ayered)D(ouble)H(ydroxide) and Mg4Fe-LDH prepared by the co- precipitation method. (Our previous experiences with these LDH-types indicated that materials of the highest quality could be obtained at these compositions.) Deprotonated trans cinnamic acid molecules were the guests. Successful intercalation occurred by the post-synthetic treatment, i.e. the guest anion was introduced into the interlayer region of the host materials via ion exchange. Co-precipitation with the components of the host and the guest moieties did not lead to intercalated layered structures. The obtained nanohybrids were studied by powder X-ray diffractometry (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray fluorescence (EDX) coupled to the SEM instrument, thermal methods as well as infrared spectroscopy. These methods were used on one hand to prove that intercalation was successful and for the characterisation of the substances on the other. XRD measurements revealed that the interlayer distances of the modified LDHs increased significantly, clearly indicating the success of intercalation. SEM images showed the expected lamellar structure of the LDHs. Elemental maps could be obtained by the SEM−EDX coupled method. These maps gave spectacular

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