Ce2S3 decorated ZnO-ZnS core-shell nanorod arrays: Efficient solar-driven photocatalytic properties

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24620%2F16%3A00000881" target="_blank" >RIV/46747885:24620/16:00000881 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15310/16:33161088

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S0920586116303364" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0920586116303364</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cattod.2016.05.011" target="_blank" >10.1016/j.cattod.2016.05.011</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Ce2S3 decorated ZnO-ZnS core-shell nanorod arrays: Efficient solar-driven photocatalytic properties

Popis výsledku v původním jazyce

We demonstrate a facile synthesis of vertically aligned Ce2S3 decorated ZnO-ZnS and ZnO-ZnS-Ce2S3 core-shell nanorod (NR) arrays via simple two-step process: aqueous solution growth and sulfidation. By controlling the sulfidation time, ZnS nuclei were formed at the initial stage of sulfidation. Upon increasing the sulfidation time, Ce2S3 nanoparticles with an average size of ∼5 nm are decorated over the ZnO-ZnS core shell NR arrays, followed by, ZnO-ZnS-Ce2S3 core-shell ternary heterostructures. FESEM, HRTEM, EDX, XRD and XPS analyses revealed that the interior cores and exterior shells of the as-prepared hetero-nanorods comprised of single-crystal wurtzite-type ZnO and polycrystalline wurtzite ZnS, respectively, with a large quantity of Ce2S3 NPs inlaid over the ZnS shell. Photocatalytic behavior of the Ce2S3 decorated ZnO-ZnS hybrid photocatalyst was studied by means of photodegradation of methylene blue (MB) under visible irradiation. Ce2S3 decorated ZnO-ZnS hybrid structures show an enhanced photodegradation rate of nearly 2.8, 1.3 and 2.5 times higher than that of the bare ZnO, ZnO-ZnS and ZnO-ZnS-Ce2S3, which is attributed to the increase in the light absorption in visible region, electron-hole separation at the ZnO-ZnS and ZnS-Ce2S3 interfaces.

Název v anglickém jazyce

Ce2S3 decorated ZnO-ZnS core-shell nanorod arrays: Efficient solar-driven photocatalytic properties

Popis výsledku anglicky

We demonstrate a facile synthesis of vertically aligned Ce2S3 decorated ZnO-ZnS and ZnO-ZnS-Ce2S3 core-shell nanorod (NR) arrays via simple two-step process: aqueous solution growth and sulfidation. By controlling the sulfidation time, ZnS nuclei were formed at the initial stage of sulfidation. Upon increasing the sulfidation time, Ce2S3 nanoparticles with an average size of ∼5 nm are decorated over the ZnO-ZnS core shell NR arrays, followed by, ZnO-ZnS-Ce2S3 core-shell ternary heterostructures. FESEM, HRTEM, EDX, XRD and XPS analyses revealed that the interior cores and exterior shells of the as-prepared hetero-nanorods comprised of single-crystal wurtzite-type ZnO and polycrystalline wurtzite ZnS, respectively, with a large quantity of Ce2S3 NPs inlaid over the ZnS shell. Photocatalytic behavior of the Ce2S3 decorated ZnO-ZnS hybrid photocatalyst was studied by means of photodegradation of methylene blue (MB) under visible irradiation. Ce2S3 decorated ZnO-ZnS hybrid structures show an enhanced photodegradation rate of nearly 2.8, 1.3 and 2.5 times higher than that of the bare ZnO, ZnO-ZnS and ZnO-ZnS-Ce2S3, which is attributed to the increase in the light absorption in visible region, electron-hole separation at the ZnO-ZnS and ZnS-Ce2S3 interfaces.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

—

Návaznosti

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Catalysis Today

ISSN

0920-5861

e-ISSN

—

Svazek periodika

278

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

271-279

Kód UT WoS článku

000388778000011

EID výsledku v databázi Scopus

2-s2.0-84971595609