Počet záznamů: 1
Study of photocatalytic activity of Zn.sub.x./sub.Cd.sub.1-x./sub.S quantum dots in dependence on their composition using methylene blue
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SYSNO ASEP 0486601 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Study of photocatalytic activity of ZnxCd1-xS quantum dots in dependence on their composition using methylene blue Tvůrce(i) Praus, P. (CZ)
Svoboda, L. (CZ)
Hospodková, Alice (FZU-D) RID, ORCID, SAI
Mamulová Kutláková, K. (CZ)Celkový počet autorů 4 Zdroj.dok. NANOCON 2014 Conference Proceedings. - Ostrava : Tanger Ltd, 2015 / Shrbená J. - ISBN 978-80-87294-53-6 Rozsah stran s. 136-140 Poč.str. 6 s. Forma vydání Online - E Akce International Conference NANOCON /6./ Datum konání 05.11.2014 - 07.11.2014 Místo konání Brno Země CZ - Česká republika Typ akce WRD Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova quantum dots ; ZnCdS ; photocatalysis ; UV-VIS absorption ; x-ray diffraction Vědní obor RIV BM - Fyzika pevných látek a magnetismus Obor OECD Condensed matter physics (including formerly solid state physics, supercond.) Institucionální podpora FZU-D - RVO:68378271 UT WOS 000350636300022 EID SCOPUS 85006058493 Anotace ZnCdS quantum dots (QDs) with the different composition were prepared by precipitation of zinc and cadmium acetates with sodium sulphide in the presence of cetyltrimethylammonium bromide (CTAB) used for stabilization of their aqueous colloid dispersions. Transition energies of these quantum dots were determined from the UV-VIS spectra of QDs colloid dispersions and consequently used for calculation of the QDs sizes according to the Schrodinger equation. The ZnCdS QDs size was found to be significantly influenced by their composition: the QDs size decreased with the increasing Zn content. The photocatalytic activity of the ZnCdS QDs was studied using the methylene blue decomposition under UV irradiation. Different photocatalytic activity depending on the composition x was observed and explained. The maximal photocatalytic activity was achieved for x = 0.6 when the energy of the irradiation photons was still sufficient to generate electron-hole pairs in majority of the QDs and at the same time the photocatalytic surface area was maximal.
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Počet záznamů: 1