CTAB- and pluronic F-127-assisted microwave processing of ZnO particles with modified morphology and optical properties
Аутори
Marković, SmiljaStojković Simatović, Ivana
Ahmetović, Sanita
Veselinović, Ljiljana
Stojadinović, Stevan
Rac, Vladislav
Škapin, Srečo Davor
Uskoković, Dragan
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Zinc oxide-based materials have a great potential to be applied as photocatalysts in the processes
of removal of organic and biological pollutants from drinking and wastewaters. A major
drawback of ZnO as visible-light absorber is a band energy gap of 3.37 eV, which restricts the
material to absorb UV light only. This drawback can be overcame by modifying the optical
absorption properties of zinc oxide particles. Different approaches have been applied to modify
the visible light photocatalytic activity of ZnO materials: (1) metal and nonmetal ion doping, (2)
hydrogenation, (3) the incorporation of crystalline defects in the form of vacancies and
interstitials, (4) the modification of particles morphology and surface topology, etc.
In this study we investigated the influence of different surfactants on the morphology, optical
properties and functionality of ZnO particles. Two different surfactants were employed during
microwave processing of ZnO particles, cetyltrimethylammoni...um bromide (CTAB) as cationic
and Pluronic F-127 as non-ionic one. The crystal structure and phase purity of the ZnO particles
were determined by X-ray diffraction and Raman spectroscopy. Effects of the surfactants on
particles morphology and texture properties were observed with field emission scanning electron
microscopy (FE–SEM) and nitrogen adsorption–desorption isotherm, respectively. The optical
properties were studied using UV–Vis diffuse reflectance and photoluminescence (PL)
spectroscopy. Functionality of ZnO particles was studied due to their photocatalytic and
electrochemical activities. Photocatalytic activity was examined via decolorization of methylene
blue under direct sunlight irradiation. Electrochemical behavior of the ZnO samples as anode
material was evaluated by linear sweep voltammetry in Na2SO4
electrolyte; the oxygen evolution
kinetics were determined and compared.
Кључне речи:
ZnO particlesИзвор:
Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018, 2018, 70/O.S.II.9-Издавач:
- Materials Research Society of Serbia Knez Mihailova 35/IV, P.O.Box 433, 11000 Belgrade, Serbia
Финансирање / пројекти:
- Молекуларно дизајнирање наночестица контролисаних морфолошких и физичко-хемијских карактеристика и функционалних материјала на њиховој основи (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45004)
Институција/група
Institut za multidisciplinarna istraživanjaTY - CONF AU - Marković, Smilja AU - Stojković Simatović, Ivana AU - Ahmetović, Sanita AU - Veselinović, Ljiljana AU - Stojadinović, Stevan AU - Rac, Vladislav AU - Škapin, Srečo Davor AU - Uskoković, Dragan PY - 2018 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/2970 AB - Zinc oxide-based materials have a great potential to be applied as photocatalysts in the processes of removal of organic and biological pollutants from drinking and wastewaters. A major drawback of ZnO as visible-light absorber is a band energy gap of 3.37 eV, which restricts the material to absorb UV light only. This drawback can be overcame by modifying the optical absorption properties of zinc oxide particles. Different approaches have been applied to modify the visible light photocatalytic activity of ZnO materials: (1) metal and nonmetal ion doping, (2) hydrogenation, (3) the incorporation of crystalline defects in the form of vacancies and interstitials, (4) the modification of particles morphology and surface topology, etc. In this study we investigated the influence of different surfactants on the morphology, optical properties and functionality of ZnO particles. Two different surfactants were employed during microwave processing of ZnO particles, cetyltrimethylammonium bromide (CTAB) as cationic and Pluronic F-127 as non-ionic one. The crystal structure and phase purity of the ZnO particles were determined by X-ray diffraction and Raman spectroscopy. Effects of the surfactants on particles morphology and texture properties were observed with field emission scanning electron microscopy (FE–SEM) and nitrogen adsorption–desorption isotherm, respectively. The optical properties were studied using UV–Vis diffuse reflectance and photoluminescence (PL) spectroscopy. Functionality of ZnO particles was studied due to their photocatalytic and electrochemical activities. Photocatalytic activity was examined via decolorization of methylene blue under direct sunlight irradiation. Electrochemical behavior of the ZnO samples as anode material was evaluated by linear sweep voltammetry in Na2SO4 electrolyte; the oxygen evolution kinetics were determined and compared. PB - Materials Research Society of Serbia Knez Mihailova 35/IV, P.O.Box 433, 11000 Belgrade, Serbia C3 - Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018 T1 - CTAB- and pluronic F-127-assisted microwave processing of ZnO particles with modified morphology and optical properties SP - 70/O.S.II.9 UR - https://hdl.handle.net/21.15107/rcub_rimsi_2970 ER -
@conference{ author = "Marković, Smilja and Stojković Simatović, Ivana and Ahmetović, Sanita and Veselinović, Ljiljana and Stojadinović, Stevan and Rac, Vladislav and Škapin, Srečo Davor and Uskoković, Dragan", year = "2018", abstract = "Zinc oxide-based materials have a great potential to be applied as photocatalysts in the processes of removal of organic and biological pollutants from drinking and wastewaters. A major drawback of ZnO as visible-light absorber is a band energy gap of 3.37 eV, which restricts the material to absorb UV light only. This drawback can be overcame by modifying the optical absorption properties of zinc oxide particles. Different approaches have been applied to modify the visible light photocatalytic activity of ZnO materials: (1) metal and nonmetal ion doping, (2) hydrogenation, (3) the incorporation of crystalline defects in the form of vacancies and interstitials, (4) the modification of particles morphology and surface topology, etc. In this study we investigated the influence of different surfactants on the morphology, optical properties and functionality of ZnO particles. Two different surfactants were employed during microwave processing of ZnO particles, cetyltrimethylammonium bromide (CTAB) as cationic and Pluronic F-127 as non-ionic one. The crystal structure and phase purity of the ZnO particles were determined by X-ray diffraction and Raman spectroscopy. Effects of the surfactants on particles morphology and texture properties were observed with field emission scanning electron microscopy (FE–SEM) and nitrogen adsorption–desorption isotherm, respectively. The optical properties were studied using UV–Vis diffuse reflectance and photoluminescence (PL) spectroscopy. Functionality of ZnO particles was studied due to their photocatalytic and electrochemical activities. Photocatalytic activity was examined via decolorization of methylene blue under direct sunlight irradiation. Electrochemical behavior of the ZnO samples as anode material was evaluated by linear sweep voltammetry in Na2SO4 electrolyte; the oxygen evolution kinetics were determined and compared.", publisher = "Materials Research Society of Serbia Knez Mihailova 35/IV, P.O.Box 433, 11000 Belgrade, Serbia", journal = "Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018", title = "CTAB- and pluronic F-127-assisted microwave processing of ZnO particles with modified morphology and optical properties", pages = "70/O.S.II.9", url = "https://hdl.handle.net/21.15107/rcub_rimsi_2970" }
Marković, S., Stojković Simatović, I., Ahmetović, S., Veselinović, L., Stojadinović, S., Rac, V., Škapin, S. D.,& Uskoković, D.. (2018). CTAB- and pluronic F-127-assisted microwave processing of ZnO particles with modified morphology and optical properties. in Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018 Materials Research Society of Serbia Knez Mihailova 35/IV, P.O.Box 433, 11000 Belgrade, Serbia., 70/O.S.II.9. https://hdl.handle.net/21.15107/rcub_rimsi_2970
Marković S, Stojković Simatović I, Ahmetović S, Veselinović L, Stojadinović S, Rac V, Škapin SD, Uskoković D. CTAB- and pluronic F-127-assisted microwave processing of ZnO particles with modified morphology and optical properties. in Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018. 2018;:70/O.S.II.9. https://hdl.handle.net/21.15107/rcub_rimsi_2970 .
Marković, Smilja, Stojković Simatović, Ivana, Ahmetović, Sanita, Veselinović, Ljiljana, Stojadinović, Stevan, Rac, Vladislav, Škapin, Srečo Davor, Uskoković, Dragan, "CTAB- and pluronic F-127-assisted microwave processing of ZnO particles with modified morphology and optical properties" in Programme and The Book of Abstracts / Twentieth Annual Conference YUCOMAT 2018, Herceg Novi, September 3-7, 2018 (2018):70/O.S.II.9, https://hdl.handle.net/21.15107/rcub_rimsi_2970 .