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Preparation of Mg-vermiculite nanoparticles using potassium persulfate

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F06%3A00014372" target="_blank" >RIV/61989100:27640/06:00014372 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Preparation of Mg-vermiculite nanoparticles using potassium persulfate

  • Original language description

    Delamination/exfoliation process of the Mg-vermiculite (Letovice, CZE), particles with size less than 5 &#956;m, was studied after potassium persulfate treatment and compared with known method of hydrogen peroxide treatment. X-ray powder diffraction patterns showed that treatment of Mg-vermiculite with different molar concentration of persulfate at the temperature 60 °C for 2 h. caused reduction of relative intensity of the basal 001 diffraction to the 15 %, 9 % and 4 %, respectively, compared to intensity of 001 diffraction of untreated Mg-vermiculite (100 %). On the other hand Irel. of the 001 diffraction of Mg-vermiculite after treatment with 30 % and 50 % hydrogen peroxide decreased only to Irel. = 36 % and 32 %, respectively. Atomic Force Microscopy and Scanning Electron Microscopy verified effect of the treatment on structure degradation connected with higher degree of delamination/exfoliation of the particles and their cracking into nano-sized particles.

  • Czech name

    Preparation of Mg-vermiculite nanoparticles using potassium persulfate

  • Czech description

    Byl studován proces delaminace/exfoliace Mg-vermikulitu (Letovice, ČR), s částicemi pod 5 &#956;m, po úpravě peroxodisíranem draselným a provedeno srovnání s používanou metodou úpravy peroxidem vodíku. Záznamy rtg práškové difrakce ukazují, že úprava Mg-vermikulitu roztoky peroxodisíranu o různé molární koncentraci při teplotě 60 °C po dobu 2 h způsobily snížení relativní intenzity bazální 001 difrakce na 15 %, 9 % a 4 %, ve srovnání s intenzitou 001 diffrakce původního Mg-vermikulitu (100 %). Oproti tomu, Irel. 001 difrakce Mg-vermikulitu po úpravě 30 % a 50 % roztokem peroxidu vodíku se snížila pouze na Irel. = 36 % a 32 %. Mikroskopie atomárních sil a skenovací elektronová mikroskopie potvrdily vliv peroxodisíranu na strukturní degradaci souvisejícís vyšším stupněm delaminace/exfoliace částic a jejich rozpad na nanočástice.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    JJ - Other materials

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/GA205%2F05%2F2548" target="_blank" >GA205/05/2548: Nanomaterials based on structurally modified clay minerals</a><br>

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2006

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Journal of Nanoscience and Nanotechnology

  • ISSN

    1533-4880

  • e-ISSN

  • Volume of the periodical

    6

  • Issue of the periodical within the volume

    8

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    4

  • Pages from-to

    2484-2488

  • UT code for WoS article

  • EID of the result in the Scopus database