Naslov
Pressure-driven and photocatalytic diversity of shape-selected ZnO particles

Autori
Vrankić, Martina ; Šarić, Ankica ; Nakagawa, Takeshi ; Ding , Yang ; Despotović , Ines ; Kanižaj , Lidija ; Peter , Robert ; Petravić , Mladen ; Lützenkirchen-Hecht , Dirk

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
28. međunarodni znanstveni sastanak Vakuumska znanost i tehnika, Crikvenica, = 28. mednarodno znanstveno srečanje Vakuumska znanost in tehnika = 28th International Scientific Meeting on Vacuum Science and Technique, : book of abstracts : program & abstracts : ISMVST-28 / Mičetić, Maja ; Salamon, Krešimir - Zagreb : Tvornica reklame j.d.o.o., 2022, 20-20

ISBN
978-953-7941-42-0

Skup
28th International Scientific Meeting on Vacuum Science and Technique

Mjesto i datum
Crikvenica, Hrvatska, 18.05.2022. - 20.05.2022

Vrsta sudjelovanja
Pozvano predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
high pressure XRD ; photocatalysis ; zinc oxide ; phase transition ; microstructure

Sažetak
The physical and chemical features of tuned, shape-selected ZnO particles are discussed in terms of response to external hydrostatic pressure using the Synchrotron Powder X-ray diffraction measurements, degradation kinetics over dye pollutant in aqueous solution and X-ray Photoelectron Spectroscopy fingerprints, latter giving an insight into the morphological versatility and surface diversity of ZnO powder. The microstrain responses of the ZnO NPs to the applied hydrostatic pressure were studied up to 30 GPa, while the photocatalytic reactions were carried over the RhB dye pollutant molecules. We comparatively showed that the diversity of size and shape of ZnO particles distinguishes the wurtzite-to-rocksalt transformation reversibility phenomena by dictating the microstructure- dependent deformation behavior and ultimately leads to different microstrain responses to hydrostatic pressure. Moreover, we mimicked theoretical breakthroughs at the Density Functional Theory level leading to morphology- driven ZnO NPs. The exceptionally high apparent- rate constant of 9.7(2)× 10-2 min-1 highlights the role of spherical ZnO NPs grown hydrothermally from ethanolic solution towards the giant, spindle-shaped ZnO particles prepared in NaOH medium with calcination treatment. By understanding the crystal growth of ZnO NPs via the molecular ZnO interface/solvent/additive interactions and screening the solution chemistry of ZnO NPs, one can make ZnO a highly efficient promising multifunctional material.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija

POVEZANOST RADA