Studies on the hydrothermal synthesis of Cd(x)Zn(1-x)S compounds

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F18%3A10381902" target="_blank" >RIV/00216208:11310/18:10381902 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.2298/PAC1803287S" target="_blank" >https://doi.org/10.2298/PAC1803287S</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2298/PAC1803287S" target="_blank" >10.2298/PAC1803287S</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Studies on the hydrothermal synthesis of Cd(x)Zn(1-x)S compounds

Popis výsledku v původním jazyce

In this study series of Cd(x)Zn(1-x)S solid solutions with different amounts of Cd and Zn were synthesized by the hydrothermal treatment of aqueous solutions containing CdCl2, Na2S . 9 H2O and ZnSO4 . 7 H2O. The aim was to examine the influence of Zn concentration and processing conditions (hydrothermal temperature and duration) on the structure of the obtained powders and their photocatalytic activity (in water splitting process). The obtained photocatalysts (with and without Pd co-catalyst) were analysed by X-ray diffraction (XRD), atomic absorption spectroscopy (AAS), ultravioletvisible spectroscopy (UV-VIS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET) method and gas chromatography (GC). The XRD results confirmed the crystallinity of the compounds and transition from hexagonal to cubic phase with increasing Zn content. Complete transformation from hexagonal to cubic phase did not take place, and both phases were present in almost all Samples. BET analysis showed the importance of the pore distribution and pore size, especially in the case of photocatalysts with different duration treatment. GC measurements of the photocatalysts without and with Pd co-catalyst confirmed the production of hydrogen for all tested compounds. The best photocatalytic performance was achieved by the sample Zn(50)230/72-Pd prepared at 230 degrees C, for 72 hours, with 50% Zn and in the presence of Pd co-catalyst. The synthesis implied no stabilizer neither organic compound.

Název v anglickém jazyce

Studies on the hydrothermal synthesis of Cd(x)Zn(1-x)S compounds

Popis výsledku anglicky

In this study series of Cd(x)Zn(1-x)S solid solutions with different amounts of Cd and Zn were synthesized by the hydrothermal treatment of aqueous solutions containing CdCl2, Na2S . 9 H2O and ZnSO4 . 7 H2O. The aim was to examine the influence of Zn concentration and processing conditions (hydrothermal temperature and duration) on the structure of the obtained powders and their photocatalytic activity (in water splitting process). The obtained photocatalysts (with and without Pd co-catalyst) were analysed by X-ray diffraction (XRD), atomic absorption spectroscopy (AAS), ultravioletvisible spectroscopy (UV-VIS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET) method and gas chromatography (GC). The XRD results confirmed the crystallinity of the compounds and transition from hexagonal to cubic phase with increasing Zn content. Complete transformation from hexagonal to cubic phase did not take place, and both phases were present in almost all Samples. BET analysis showed the importance of the pore distribution and pore size, especially in the case of photocatalysts with different duration treatment. GC measurements of the photocatalysts without and with Pd co-catalyst confirmed the production of hydrogen for all tested compounds. The best photocatalytic performance was achieved by the sample Zn(50)230/72-Pd prepared at 230 degrees C, for 72 hours, with 50% Zn and in the presence of Pd co-catalyst. The synthesis implied no stabilizer neither organic compound.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Processing and Application of Ceramics

ISSN

1820-6131

e-ISSN

—

Svazek periodika

12

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CS - Srbsko a Černá Hora

Počet stran výsledku

8

Strana od-do

287-294

Kód UT WoS článku

000446121300011

EID výsledku v databázi Scopus

2-s2.0-85054540728