Simple one-pot hydrothermal synthesis and photocatalytic activity of ZnS and ZnS/kaolinite nanocomposite

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F19%3A10239512" target="_blank" >RIV/61989100:27640/19:10239512 - isvavai.cz</a>

Alternative codes found

RIV/61989100:27740/19:10239512

Result on the web

<a href="https://www.nanocon.eu/files/uploads/01/NANOCON2018%20-%20Conference%20Proceedings_content.pdf" target="_blank" >https://www.nanocon.eu/files/uploads/01/NANOCON2018%20-%20Conference%20Proceedings_content.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Simple one-pot hydrothermal synthesis and photocatalytic activity of ZnS and ZnS/kaolinite nanocomposite

Original language description

This study is focused on preparation of pristine zinc sulphide (ZnS) and zinc sulphide/kaolinite (ZnS/K) nanocomposite using one-pot hydrothermal synthesis under atmospheric pressure and without any surfactant. Together with finding a simple preparation method, the aim was to achieve a high photocatalytic activity, and also reduce the environmental risk of ZnS (in the case of ZnS/K). Pristine ZnS was synthesized from aqueous solutions of zinc chloride and sodium sulphide in various ratios. ZnS/K nanocomposite was prepared similarly by addition of kaolin KKAF into the mixture of zinc chloride and sodium sulfide solutions. Reaction mixtures were continuously stirred at 100oC for several hours, resulting white solids were separated by centrifugation, washed with distilled water, and dried at 105oC overnight. X-ray powder diffraction analysis revealed the presence of cubic modification sphalerite both in ZnS and ZnS/K samples. Amount of ZnS in ZnS/K (~32 wt.%) was determined by Rietveld method which also confirmed the sphalerite structure. Morphology of the samples was observed using scanning electron microscopy. In the case of ZnS/K, the ZnS nanoparticles anchored on the kaolinite surface were observed. Photocatalytic activity evaluated using discoloration of Acid Orange 7 (AO7) in a liquid phase was found very high for ZnS samples. After 1 h of UV irradiation, ~99% of AO7 was degraded by ZnS. Photodegradation efficiency reached 96% in the case of ZnS/K. Taking into account that only ~32 wt.% of ZnS is present in ZnS/K, the photocatalytic activity of the nanocomposite can be considered three times higher compared to pristine ZnS.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

21001 - Nano-materials (production and properties)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2019

Confidentiality

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

Article name in the collection

NANOCON 2018 : 10th Anniversary International Conference on Nanomaterials - research &amp; application : conference proceedings : peer reviewed : October 17th-19th 2018, Hotel Voroněž I, Brno, Czech Republic, EU

ISBN

978-80-87294-89-5

ISSN

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e-ISSN

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Number of pages

6

Pages from-to

146-151

Publisher name

Tanger

Place of publication

Ostrava

Event location

Brno

Event date

Oct 17, 2018

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000513131900025