Photocatalytic performance of polymeric hybrid coatings containing ZnO nanoparticles
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STROEA, Lenuta, MELINTE, Violeta, CHIBAC, Andreea-Laura, PODASCA, Viorica-Elena, BURUIANA, Tinca. Photocatalytic performance of polymeric hybrid coatings containing ZnO nanoparticles. In: Achievements and perspectives of modern chemistry, 9-11 octombrie 2019, Chişinău. Chisinau, Republic of Moldova: Tipografia Academiei de Ştiinţe a Moldovei, 2019, p. 32. ISBN 978-9975-62-428-2.
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Achievements and perspectives of modern chemistry 2019
Conferința "International Conference "Achievements and perspectives of modern chemistry""
Chişinău, Moldova, 9-11 octombrie 2019

Photocatalytic performance of polymeric hybrid coatings containing ZnO nanoparticles


Pag. 32-32

Stroea Lenuta, Melinte Violeta, Chibac Andreea-Laura, Podasca Viorica-Elena, Buruiana Tinca
 
“Petru Poni” Institute of Macromolecular Chemistry
 
Disponibil în IBN: 31 octombrie 2019


Rezumat

Intensive studies were recently focused on the synthesis of hybrid materials, composed of both inorganic and organic elements, displaying remarkable and enhanced properties compared to unfilled resins, characteristics that may trigger their applicability in sensors, photocatalysis, environmental purification, solar cells or antibacterial materials [1-3]. However, polymer/nanoparticle composites could present issues regarding immiscibility between the two phases and consequently, to uniform distribution of nanoparticles within the polymer network. These drawbacks could be overpassed, on one hand, by the UV light rapid photopolymerization of acrylate/methacrylate multifunctional monomers and oligomers. This represents an environmentally friendly approach which allows the formation of polymer networks through a fast transformation of the liquid monomers/oligomers into thin films, with novel and tunable physical, chemical and mechanical properties. On the other hand, another viable strategy is the functionalization of preformed nanoparticles with organic molecules, providing thus an enhanced compatibility between phases and a better dispersion into host polymeric networks. In the field of photocatalysis, ZnO became one of the leading candidate because of its unique characteristics, such as high catalytic activity, optical sensitivity, universal biocompatibility, and high chemical stability, reason for that has been successfully applied in catalysis [3], water treatment technology [4], cosmetics [5], etc. However, the use of ZnO nanoparticles in photocatalytic process under visible-light is limited by its large energy gap (Eg= 3.37 eV), reason for that doping with noble metal nanoparticles (Au, Ag, Pt, Pd) seems to be a convenient alternative and has gained significant scientific interest. Taking in consideration all these aspects, the present paper will describe the functionalization of ZnO nanoparticles with silane derivative and immobilization into polymeric matrices in tandem with the in situ photogeneration of noble metal nanoparticles, aiming the improvement of the photocatalytic activity in visible light. The chemical and morphological characterization of final composites will be also performed, in tandem with the evaluation of the photocatalytic activity and reusability of the proposed hybrid composite coatings.