Comparable study of vermiculites from four commercial deposits prepared with fixed ceria nanoparticles
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F18%3A10241308" target="_blank" >RIV/61989100:27360/18:10241308 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27640/18:10241308 RIV/61989100:27710/18:10241308
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0169131717304477" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0169131717304477</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.clay.2017.10.006" target="_blank" >10.1016/j.clay.2017.10.006</a>
Alternative languages
Result language
angličtina
Original language name
Comparable study of vermiculites from four commercial deposits prepared with fixed ceria nanoparticles
Original language description
Four commercial macroscopic vermiculites (Ver) from different exploited deposits were investigated regarding their chemistry and structural transformation stage from mica (phlogopite), and compared with selected raw vermiculites and "hydrobioties" known from literature, in which the chemical analyzes verified the existence of iron as Fe3+ and Fe2+. Subsequently prepared vermiculite/ceria (Ver/CeO2) nanoparticles composites were compared from the point of view of the fixation of ceria nanoparticles by using stability test and regarding their photocatalytic activity in the decomposition of N2O. The experimental methods used for these studies were X-ray fluorescence spectrometry, atomic emission spectrometry, X-ray powder diffraction, infrared (FR-IR) and Raman spectroscopy and transmission electron microscopy with high resolution (HRTEM). Negative layer charge of vermiculites produced by the local charge balance and distribution of Fe3+ in tetrahedral and octahedral sheets were related to the CeO2 nanocrystals fixation and orientation. Among the four Ver/CeO2 nanoparticles composite samples, the vermiculite in sample Ver-C/CeO2 exhibited the highest negative layer charge. The CeO2 crystallites were the smallest among all four samples. HRTEM found separated CeO2 nanocrystallites and CeO2 agglomerates of differently oriented nanocrystallites. Such forms of CeO2 nanocrystals influenced the position of the Raman CeO2 F-28 and suppressed ability for photocatalytic N2O conversion.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20504 - Ceramics
Result continuities
Project
<a href="/en/project/LO1203" target="_blank" >LO1203: Regional Materials Science and Technology Centre - Feasibility Program</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Applied Clay Science
ISSN
0169-1317
e-ISSN
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Volume of the periodical
151
Issue of the periodical within the volume
january
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
164-174
UT code for WoS article
000417672100020
EID of the result in the Scopus database
2-s2.0-85031789178