Photocatalytic H2 generation from aqueous ammonia solution using ZnO photocatalysts prepared by different methods

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F15%3A00449214" target="_blank" >RIV/68378271:_____/15:00449214 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216275:25310/15:39899503 RIV/61989100:27360/15:86095556 RIV/61989100:27710/15:86095556 RIV/61989100:27640/15:86095556

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.ijhydene.2015.05.004" target="_blank" >http://dx.doi.org/10.1016/j.ijhydene.2015.05.004</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijhydene.2015.05.004" target="_blank" >10.1016/j.ijhydene.2015.05.004</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Photocatalytic H2 generation from aqueous ammonia solution using ZnO photocatalysts prepared by different methods

Popis výsledku v původním jazyce

ZnO photocatalysts were prepared by thermal annealing (TA) of zinc acetate, by precipitation reaction of zinc acetate with NaOH followed by TA and by precipitation reaction of zinc acetate with NaOH in the presence of UV irradiation followed by TA. The photocatalytic performance was investigated for H2 evolution using aqueous ammonia media under 254 nm UV light. The different used synthetic procedure leading to the formation of different defects and oxygen excess defects in the ZnO lattice were factors influencing photocatalytic production of hydrogen. The highest yields of hydrogen were observed in ZnO prepared by TA of zinc acetate in air. This photocatalyst possesses the lowest concentration of oxygen vacancies causing efficient trapping of electrons. Consequently higher number of electrons in conduction band was available for photocatalytic reaction.

Název v anglickém jazyce

Photocatalytic H2 generation from aqueous ammonia solution using ZnO photocatalysts prepared by different methods

Popis výsledku anglicky

ZnO photocatalysts were prepared by thermal annealing (TA) of zinc acetate, by precipitation reaction of zinc acetate with NaOH followed by TA and by precipitation reaction of zinc acetate with NaOH in the presence of UV irradiation followed by TA. The photocatalytic performance was investigated for H2 evolution using aqueous ammonia media under 254 nm UV light. The different used synthetic procedure leading to the formation of different defects and oxygen excess defects in the ZnO lattice were factors influencing photocatalytic production of hydrogen. The highest yields of hydrogen were observed in ZnO prepared by TA of zinc acetate in air. This photocatalyst possesses the lowest concentration of oxygen vacancies causing efficient trapping of electrons. Consequently higher number of electrons in conduction band was available for photocatalytic reaction.

Druh

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

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

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

International Journal of Hydrogen Energy

ISSN

0360-3199

e-ISSN

—

Svazek periodika

40

Číslo periodika v rámci svazku

27

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

8530-8538

Kód UT WoS článku

000356740000005

EID výsledku v databázi Scopus

2-s2.0-84937518356