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Rare-Earth Zirconate Ln2Zr2O7 (Ln: La, Nd, Gd, and Dy) Powders, Xerogels, and Aerogels: Preparation, Structure, and Properties

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F19%3APU133735" target="_blank" >RIV/00216305:26620/19:PU133735 - isvavai.cz</a>

  • Result on the web

    <a href="http://apps.webofknowledge.com/full_record.do?product=WOS&search_mode=GeneralSearch&qid=1&SID=F2bwkrVhawvBfdMRdQX&page=1&doc=1" target="_blank" >http://apps.webofknowledge.com/full_record.do?product=WOS&search_mode=GeneralSearch&qid=1&SID=F2bwkrVhawvBfdMRdQX&page=1&doc=1</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1021/acs.inorgchem.9b01965" target="_blank" >10.1021/acs.inorgchem.9b01965</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Rare-Earth Zirconate Ln2Zr2O7 (Ln: La, Nd, Gd, and Dy) Powders, Xerogels, and Aerogels: Preparation, Structure, and Properties

  • Original language description

    The physicochemical properties of rare-earth zirconates can be tuned by the rational modification of their structures and phase compositions. In the present work, La3+-, Nd3+-, Gd3+-, and Dy3+-zirconate nanostructured materials were prepared by different synthetic protocols, leading to powders, xerogels, and, for the first time, monolithic aerogels. Powders were synthesized by the co-precipitation method, while xerogels and aerogels were synthesized by the sol−gel technique, followed by ambient and supercritical drying, respectively. Their microstructures, thermogravimetric pro-files, textural properties, and Crystallographic structures are reported. The co-precipitation method led to dense powders (SBET <1 m2 g−1 ), while the sol−gel technique resulted in large surface area xerogels (SBET = 144 m2 g−1) and aerogels (SBET = 168 m2 g−1 ). In addition, the incorporation of lanthanide ions into the zirconia lattice altered the crystal structures of the powders, xerogels, and aerogels. Single-phase pyrochlores were obtained for La2Zr2O7 and Nd2Zr2O7 powders and xerogels, while defect fluorite structures formed in the case of Gd2Zr2O7 and Dy2Zr2O7. All aerogels contain a mixture of cubic and tetragonal ZrO2 phases. Thus, a direct effect is shown between the drying conditions and the resulting crystalline phases of the nanostructured rare-earth zirconates.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    20402 - Chemical process engineering

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2019

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Inorganic Chemistry

  • ISSN

    0020-1669

  • e-ISSN

    1520-510X

  • Volume of the periodical

    1

  • Issue of the periodical within the volume

    1

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    11

  • Pages from-to

    14467-14477

  • UT code for WoS article

    000494894400021

  • EID of the result in the Scopus database

    2-s2.0-85073696818