Photoactive nanocomposites of ZnO/clay type

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F16%3A86095098" target="_blank" >RIV/61989100:27640/16:86095098 - isvavai.cz</a>

Alternative codes found

RIV/61989100:27740/16:86095098

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Photoactive nanocomposites of ZnO/clay type

Original language description

This study is focused on ZnO/clay photoactive nanocomposites where ZnO nanoparticles are the photoactive components and the clay serves as a cheap and chemically stable matrix on which the ZnO nanoparticles are anchored. Anchoring nanoparticles on the matrix is often used method allowing easier handling of the nanocomposite (clay particles are of micrometric sizes) in comparison with pure nanoparticles. Moreover, nanoparticles anchored on the matrix do not represent such an environmental and healts risks (due to the reduced mobility) as pure nanoparticles. Two clays were used in this study: kaoline KKAF and Moroccan clay ghassoul, unique mixture of stevensite and sepiolite, from Jebel Ghassoul deposit in Morocco. Photoactive nanocomposites were prepared from ZnCl2 and NaOH precursors using a simple hydrothermal method. Resulting samples were dried and calcined at 600 oC for 1 h. The precursors:clay ratios were chosen so that the nanocomposites contained 50 wt.% of ZnO. Nanocomposites were characterized using X-ray powder diffraction, UV-VIS diffuse reflectance spectroscopy, and scanning electron microscopy techniques. Photodegradation activities were evaluated by discoloration of acid orange 7 aqueous solutions under UV irradiation. Sizes of crystallites and band gap energies were determined. Mutual comparison of the properties of both nanocomposites and also the comparison with pure ZnO nanoparticles were carried out.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

JI - Composite materials

OECD FORD branch

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Project

<a href="/en/project/ED1.1.00%2F02.0070" target="_blank" >ED1.1.00/02.0070: IT4Innovations Centre of Excellence</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2016

Confidentiality

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

Article name in the collection

NANOCON 2015 : 7th international conference : conference proceedings : (reviewed version) : October 14th-16th 2015, Hotel Voronez I, Brno, Czech Republic, EU

ISBN

978-80-87294-63-5

ISSN

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e-ISSN

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Number of pages

5

Pages from-to

196-200

Publisher name

Tanger

Place of publication

Ostrava

Event location

Brno

Event date

Oct 14, 2015

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000374708800034