Počet záznamů: 1
Atomic Force Microscopy of Novel Zeolitic Materials Prepared by Top-Down Synthesis and ADOR Mechanism
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SYSNO ASEP 0435063 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Atomic Force Microscopy of Novel Zeolitic Materials Prepared by Top-Down Synthesis and ADOR Mechanism Tvůrce(i) Smith, R. L. (GB)
Eliášová, Pavla (UFCH-W) RID
Mazur, Michal (UFCH-W) RID
Attfield, M. P. (GB)
Čejka, Jiří (UFCH-W) RID, ORCID, SAI
Anderson, M. W. (GB)Zdroj.dok. Chemistry - A European Journal. - : Wiley - ISSN 0947-6539
Roč. 20, č. 33 (2014), s. 10446-10450Poč.str. 5 s. Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova assembly ; atomic force microscopy ; top-down synthesis Vědní obor RIV CF - Fyzikální chemie a teoretická chemie CEP GBP106/12/G015 GA ČR - Grantová agentura ČR Institucionální podpora UFCH-W - RVO:61388955 UT WOS 000340469800036 EID SCOPUS 84905502669 DOI https://doi.org/10.1002/chem.201402887 Anotace Top-down synthesis of 2D materials from a parent 3D zeolite with subsequent post-synthetic modification is an interesting method for synthesis of new materials. Assembly, disassembly, organisation, reassembly (ADOR) processes towards novel materials based on the zeolite UTL are now established. Herein, we present the first study of these materials by atomic force microscopy (AFM). AFM was used to monitor the ADOR process through observation of the changes in crystal surface and step height of the products. UTL surfaces were generally complex and contained grain boundaries and low-angle intergrowths, in addition to regular terraces. Hydrolysis of UTL to IPC-1P did not have adverse effects on the surfaces as compared to UTL. The layers remained intact after intercalation and calcination forming novel materials IPC-2 and IPC-4. Measured step heights gave good correlation with the X-ray diffraction determined d(200)-spacing in these materials. However, swelling gave rise to significant changes to the surface topography, with significantly less regular terrace shapes. The pillared material yielded the roughest surface with ill-defined surface features. The results support a mechanism for the majority of these materials in which the UTL layers remain intact during the ADOR process as opposed to dissolving and recrystallising during each step. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2015
Počet záznamů: 1