Dependence of photocatalytic activity of ZnxCd1-xS quantum dot composition

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F15%3A00456215" target="_blank" >RIV/68378271:_____/15:00456215 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/S1872-2067(14)60269-2" target="_blank" >http://dx.doi.org/10.1016/S1872-2067(14)60269-2</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/S1872-2067(14)60269-2" target="_blank" >10.1016/S1872-2067(14)60269-2</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Dependence of photocatalytic activity of ZnxCd1-xS quantum dot composition

Popis výsledku v původním jazyce

Aqueous colloidal dispersions containing ZnxCd1-xS quantum dots (QDs) of different x compositions were prepared by precipitating zinc and cadmium acetates with sodium sulphide, in the presence of acetyltrimethylammonium bromide stabilizer. The QD size decreased with increasing Zn content. The photocatalytic activity of the ZnxCd1-xS QDs was studied by the decomposition of methylene blue under UV irradiation, at a maximum intensity at 365 nm (3.4 eV). Three different photocatalytic activity regions wereobserved, which depended on the Zn content. The quantum levels of the QDs could be excited by incident irradiation, and influenced the resulting photocatalytic activity. Maximum photocatalytic activity was achieved at x = 0.6, where the QD transition energy was equal to the irradiation photon energy. The photocatalytic efficiency of the QDs depended on their surface area and arrangement of quantum levels, because of the quantum size effect.

Název v anglickém jazyce

Dependence of photocatalytic activity of ZnxCd1-xS quantum dot composition

Popis výsledku anglicky

Aqueous colloidal dispersions containing ZnxCd1-xS quantum dots (QDs) of different x compositions were prepared by precipitating zinc and cadmium acetates with sodium sulphide, in the presence of acetyltrimethylammonium bromide stabilizer. The QD size decreased with increasing Zn content. The photocatalytic activity of the ZnxCd1-xS QDs was studied by the decomposition of methylene blue under UV irradiation, at a maximum intensity at 365 nm (3.4 eV). Three different photocatalytic activity regions wereobserved, which depended on the Zn content. The quantum levels of the QDs could be excited by incident irradiation, and influenced the resulting photocatalytic activity. Maximum photocatalytic activity was achieved at x = 0.6, where the QD transition energy was equal to the irradiation photon energy. The photocatalytic efficiency of the QDs depended on their surface area and arrangement of quantum levels, because of the quantum size effect.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

—

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Chinese Journal of Catalysis

ISSN

0253-9837

e-ISSN

—

Svazek periodika

36

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CN - Čínská lidová republika

Počet stran výsledku

8

Strana od-do

328-335

Kód UT WoS článku

000351029200010

EID výsledku v databázi Scopus

2-s2.0-84925841093