Leaching test for calcined kaolinite and kaolinite/TiO2 photoactive composite
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F16%3A86099162" target="_blank" >RIV/61989100:27640/16:86099162 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27740/16:86099162
Result on the web
<a href="http://dx.doi.org/10.1515/chempap-2016-0059" target="_blank" >http://dx.doi.org/10.1515/chempap-2016-0059</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1515/chempap-2016-0059" target="_blank" >10.1515/chempap-2016-0059</a>
Alternative languages
Result language
angličtina
Original language name
Leaching test for calcined kaolinite and kaolinite/TiO2 photoactive composite
Original language description
Kaolinite is a suitable material for fixing TiO2 nanoparticles in a composite form. The kaolinite/TiO2 composite has promising photoactive properties which are as important as is the possible impact of the composite on the environment. Accordingly, the stability of the kaolinite/TiO2 composite dried at 105oC (KTI1) and calcined at 600oC (KTI6) and the stability of the original kaolinite treated at various temperatures (105-800oC) were studied by the leaching test in accordance with European standard BS EN 12457-2:2002 (British Standards Institution, 2002). The stability was evaluated on the basis of elements leached from the materials to extraction agents. Atomic emission spectrometry with inductively coupled plasma was used for determining the concentration of elements. In order to better understand the process of calcination and the structure changes in the kaolinite/TiO2 composite and calcined kaolinite, the materials were evaluated using X-ray powder diffraction and infrared spectroscopy with Fourier transformation. The processes of kaolinite dehydroxylation and metakaolinite formation were observed. Kaolinite is an appropriate carrier for composite preparation due to its stability even after its treatment at high temperatures. The experiments confirmed the TiO2 nanoparticles to be very strongly bound to the kaolinite surface. On the other hand, the experiments demonstrated that the presence of TiO2 on the kaolinite surface caused the release of Al in high concentrations to the final extracts, especially after kaolinite/TiO2 composite calcination. (C) 2016 Institute of Chemistry, Slovak Academy of Sciences.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JI - Composite materials
OECD FORD branch
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Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Chemical papers
ISSN
0366-6352
e-ISSN
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Volume of the periodical
70
Issue of the periodical within the volume
9
Country of publishing house
DE - GERMANY
Number of pages
9
Pages from-to
1253-1261
UT code for WoS article
000378599000012
EID of the result in the Scopus database
2-s2.0-84974573906