Photoactive and non-hazardous kaolin/ZnO composites prepared by calcination of sodium zinc carbonate

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F17%3A86100516" target="_blank" >RIV/61989100:27360/17:86100516 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/44555601:13440/17:43892829 RIV/61989100:27640/17:86100516 RIV/61989100:27740/17:86100516

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S0169131717301667" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0169131717301667</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.clay.2017.04.003" target="_blank" >10.1016/j.clay.2017.04.003</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Photoactive and non-hazardous kaolin/ZnO composites prepared by calcination of sodium zinc carbonate

Popis výsledku v původním jazyce

The photocatalytic activity of kaolin/ZnO composites prepared by calcination was investigated. The proposed synthesis procedure comprises the reaction of ZnCl2 with Na2CO3 in water dispersion of kaolin KKAF. Precursor sodium zinc carbonate Na2Zn3(CO3)4∙3H2O is formed and after its thermal decomposition the nanostructured ZnO is formed. Using this procedure the kaolin/ZnO composites containing ~ 6 and ~ 39 mass% of ZnO were prepared. X-ray fluorescence was used for determination of the ZnO yield. Phase composition of composites thermally treated at 100 – 600°C was studied using X-ray diffraction method. UV-VIS diffuse reflectance spectroscopy was used to determine the band gap energy of prepared composites and their photocatalytic activity was tested by discoloration of Acid Orange 7 in aqueous solution. Composite containing ~ 39 mass% of ZnO and calcined at 600°C exhibits the highest photocatalytic activity. Leaching tests proved that the composites can be considered non-hazardous.

Název v anglickém jazyce

Photoactive and non-hazardous kaolin/ZnO composites prepared by calcination of sodium zinc carbonate

Popis výsledku anglicky

The photocatalytic activity of kaolin/ZnO composites prepared by calcination was investigated. The proposed synthesis procedure comprises the reaction of ZnCl2 with Na2CO3 in water dispersion of kaolin KKAF. Precursor sodium zinc carbonate Na2Zn3(CO3)4∙3H2O is formed and after its thermal decomposition the nanostructured ZnO is formed. Using this procedure the kaolin/ZnO composites containing ~ 6 and ~ 39 mass% of ZnO were prepared. X-ray fluorescence was used for determination of the ZnO yield. Phase composition of composites thermally treated at 100 – 600°C was studied using X-ray diffraction method. UV-VIS diffuse reflectance spectroscopy was used to determine the band gap energy of prepared composites and their photocatalytic activity was tested by discoloration of Acid Orange 7 in aqueous solution. Composite containing ~ 39 mass% of ZnO and calcined at 600°C exhibits the highest photocatalytic activity. Leaching tests proved that the composites can be considered non-hazardous.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

21001 - Nano-materials (production and properties)

Projekt

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

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Applied Clay Science

ISSN

0169-1317

e-ISSN

—

Svazek periodika

143

Číslo periodika v rámci svazku

červenec 2017

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

345-353

Kód UT WoS článku

000403516000042

EID výsledku v databázi Scopus

2-s2.0-85017584866