Název: Nanocomposites of ZnO-decorated HPHT Nanodiamond as a perspective green photocatalysts
Autoři: Mičová, J. ; Košutová, T. ; Jerigová, M. ; Remeš, Zdeněk
Typ dokumentu: Příspěvky z konference
Konference/Akce: International Conference on Nanomaterials - Research & Application /16./ NANOCON 2024, Brno (CZ), 20241016
Rok: 2025
Jazyk: eng
Abstrakt: Electrical and optical properties of zinc oxide, in particular the relatively wide direct band gap of ~3.3 eV predetermines ZnO as a photocatalytic material at room temperature. ZnO itself is non-toxic and the hydrothermal growth method we use to prepare its nanostructures is environmentally friendly. These facts contribute to the attractiveness of this material. Recently, we have focused on studying the influence of doping or of plasma surface treatment on the photocatalytic efficiency of ZnO. However, the main disadvantages are the high recombination rate of charge carriers and the poor use of visible light. The solution is the use of ZnO as part of nanocomposites. In the past, ZnO-detonation nanodiamons (DND) composites were studied. The disadvantage of DND is the formation of clusters of different sizes, therefore we focused our attention on the use of HPHT nanodiamonds (NDs). We modified the surface of commercial HPHT NDs by oxidation in order to increase the concentration of hydroxyl-, carbonyl- and carboxyl- functional groups. The resulting ZnO-HPHT NDs composites were synthesized using a dehydration-condensation process between oxygen-containing functional groups on the NDs surface and hydroxyl groups on the ZnO surface. The prepared nanocomposites were characterized by SEM, AFM, FTIR and PL and tested by photocatalytic dye degradation.
Klíčová slova: HPHT NDs; nanocomposites; photocatalyst; photocatalytic oxidation; ZnO
Číslo projektu: 8X23025, SAV-23-13 (CEP)
Poskytovatel projektu: GA MŠk, AV ČR
Zdrojový dokument: NANOCON 2024 - Conference Proceedings, ISBN 978-80-88365-24-2, ISSN 2694-930X

Instituce: Fyzikální ústav AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: https://hdl.handle.net/11104/0366010

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-678843