Pregled bibliografske jedinice broj: 839266
Synthesis of ZnO particles using water molecules generated in esterification reaction
Synthesis of ZnO particles using water molecules generated in esterification reaction // Journal of molecular structure, 1140 (2017), 12-18 doi:10.1016/j.molstruc.2016.10.057 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 839266 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Synthesis of ZnO particles using water molecules generated in esterification reaction
Autori
Šarić, Ankica ; Gotić, Marijan ; Štefanić, Goran ; Dražić, Goran
Izvornik
Journal of molecular structure (0022-2860) 1140
(2017);
12-18
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
ZnO ; XRD ; SEM ; esterification reaction ; 13C NMR
Sažetak
Zinc oxide particles were synthesized without the addition of water by autoclaving (anhydrous) zinc acetate/alcohol and zinc acetate/acetic acid/alcohol solutions at 160°C. The solvothermal synthesis was performed in ethanol or octanol. The structural, optical and morphological characteristics of ZnO particles were investigated by X-ray diffraction (XRD), UV-Vis spectroscopy, FE-SEM and TEM/STEM microscopy. 13C NMR spectroscopy revealed the presence of ester (ethyl- or octyl- acetate) in the supernatants which directly indicate the reaction mechanism. The formation of ester in this esterification reaction generated water molecule in situ, which hydrolyzed anhydrous zinc acetate and initiated nucleation and formation of ZnO. It was found that the size and shape of ZnO particles depend on the type of alcohol used as a solvent and on the presence of acetic acid in solution. The presence of ethanol in the “pure” system without acetic acid favoured the formation of fine and uniform spherical ZnO nanoparticles (~20 nm). With the addition of small amount of acetic acid the size of these small nanoparticles increased significantly up to a few hundred nanometers. The addition of small amount of acetic acid in the presence of octanol caused even more radical changes in the shape of ZnO particles, favouring the growth of huge rod-like particles (~3 micrometers).
Izvorni jezik
Engleski
Znanstvena područja
Fizika, Kemija
POVEZANOST RADA
Projekti:
098-0982904-2898 - Fizika i primjena nanostruktura i volumne tvari (Ivanda, Mile, MZOS ) ( CroRIS)
Ustanove:
Institut "Ruđer Bošković", Zagreb
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus