TY  - JOUR
AU  - Marković, Smilja B.
AU  - Stankovic, Ana
AU  - Dostanić, Jasmina
AU  - Veselinović, Ljiljana
AU  - Mančić, Lidija
AU  - Skapin, Sreco Davor
AU  - Drazic, Goran
AU  - Janković-Častvan, Ivona
AU  - Uskoković, Dragan P.
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2169
AB  - Mechanical milling of commercial ZnO and SnO2 was used to produce a ZnO/SnO2 composite with a high density of surface defects; in particular, zinc interstitials (Zni) and oxygen vacancies (VO). To determine the impact of surface defects on photocatalytic activity, the relative concentration ratio of bulk defects to surface defects was modified by annealing at 400 and 700 degrees C. The possible application of the ZnO/SnO2 composite as a natural sunlight and UV- light driven photocatalyst was revealed via de-colorization of methylene blue. In both cases the ZnO/SnO2 composite exhibited enhanced photocatalytic activity as compared to the pristine ZnO. In order to investigate the origin of the enhancement, the pristine metal oxides and composites were characterized using a variety of techniques, including X-ray diffraction (XRD), Raman and Fourier transform infrared (FTIR) spectroscopy, field emission scanning electron microscopy (FESEM), laser diffraction particle size analysis, Brunauer-Emmett-Teller, UV-Vis diffuse reflectance and photoluminescence spectroscopy. High-resolution transmission electron microscopy (HRTEM) and elemental mapping analyses were used to reveal the presence of SnO2 nanocrystallites on the surface of larger ZnO particles. The enhanced photocatalytic activity of the composite can be attributed to the synergetic effect of the surface defects and the ZnO/SnO2 heterojunction particles, which facilitated charge separation, thereby hindering the recombination of photogenerated carriers. This study draws attention to mechanical activation as an inexpensive and environmentally friendly technique for the large-scale production of the composite with an enhanced photocatalytic activity under illumination of either UV or sunlight.
PB  - The Royal Society of Chemistry
T2  - RSC Advances
T1  - Simultaneous enhancement of natural sunlightand artificial UV-driven photocatalytic activity of a mechanically activated ZnO/SnO2 composite
VL  - 7
IS  - 68
SP  - 42725
EP  - 42737
DO  - 10.1039/c7ra06895f
ER  - 

@article{
author = "Marković, Smilja B. and Stankovic, Ana and Dostanić, Jasmina and Veselinović, Ljiljana and Mančić, Lidija and Skapin, Sreco Davor and Drazic, Goran and Janković-Častvan, Ivona and Uskoković, Dragan P.",
year = "2017",
abstract = "Mechanical milling of commercial ZnO and SnO2 was used to produce a ZnO/SnO2 composite with a high density of surface defects; in particular, zinc interstitials (Zni) and oxygen vacancies (VO). To determine the impact of surface defects on photocatalytic activity, the relative concentration ratio of bulk defects to surface defects was modified by annealing at 400 and 700 degrees C. The possible application of the ZnO/SnO2 composite as a natural sunlight and UV- light driven photocatalyst was revealed via de-colorization of methylene blue. In both cases the ZnO/SnO2 composite exhibited enhanced photocatalytic activity as compared to the pristine ZnO. In order to investigate the origin of the enhancement, the pristine metal oxides and composites were characterized using a variety of techniques, including X-ray diffraction (XRD), Raman and Fourier transform infrared (FTIR) spectroscopy, field emission scanning electron microscopy (FESEM), laser diffraction particle size analysis, Brunauer-Emmett-Teller, UV-Vis diffuse reflectance and photoluminescence spectroscopy. High-resolution transmission electron microscopy (HRTEM) and elemental mapping analyses were used to reveal the presence of SnO2 nanocrystallites on the surface of larger ZnO particles. The enhanced photocatalytic activity of the composite can be attributed to the synergetic effect of the surface defects and the ZnO/SnO2 heterojunction particles, which facilitated charge separation, thereby hindering the recombination of photogenerated carriers. This study draws attention to mechanical activation as an inexpensive and environmentally friendly technique for the large-scale production of the composite with an enhanced photocatalytic activity under illumination of either UV or sunlight.",
publisher = "The Royal Society of Chemistry",
journal = "RSC Advances",
title = "Simultaneous enhancement of natural sunlightand artificial UV-driven photocatalytic activity of a mechanically activated ZnO/SnO2 composite",
volume = "7",
number = "68",
pages = "42725-42737",
doi = "10.1039/c7ra06895f"
}

Marković, S. B., Stankovic, A., Dostanić, J., Veselinović, L., Mančić, L., Skapin, S. D., Drazic, G., Janković-Častvan, I.,& Uskoković, D. P.. (2017). Simultaneous enhancement of natural sunlightand artificial UV-driven photocatalytic activity of a mechanically activated ZnO/SnO2 composite. in RSC Advances
The Royal Society of Chemistry., 7(68), 42725-42737.
https://doi.org/10.1039/c7ra06895f

Marković SB, Stankovic A, Dostanić J, Veselinović L, Mančić L, Skapin SD, Drazic G, Janković-Častvan I, Uskoković DP. Simultaneous enhancement of natural sunlightand artificial UV-driven photocatalytic activity of a mechanically activated ZnO/SnO2 composite. in RSC Advances. 2017;7(68):42725-42737.
doi:10.1039/c7ra06895f .

Marković, Smilja B., Stankovic, Ana, Dostanić, Jasmina, Veselinović, Ljiljana, Mančić, Lidija, Skapin, Sreco Davor, Drazic, Goran, Janković-Častvan, Ivona, Uskoković, Dragan P., "Simultaneous enhancement of natural sunlightand artificial UV-driven photocatalytic activity of a mechanically activated ZnO/SnO2 composite" in RSC Advances, 7, no. 68 (2017):42725-42737,
https://doi.org/10.1039/c7ra06895f . .