Enhanced photocatalytic degradation of methylene blue and methyl orange by ZnO:Eu nanoparticles
Lidija V. Trandafilović,Dragana Jovanovic,Xueqiang Zhang,Sylwia Ptasinska,Miroslav D. Dramićanin +4 more
TLDR
In this paper, the influence of europium doping and solvents on size, particles agglomeration, light absorption and photocatalytic activity was analyzed in ZnO nanoparticles.Abstract:
ZnO nanoparticles doped with different Eu3+ percentages were synthesized in water (ZnO:Eu(x%)-W) and other solvents (methanol ZnO:Eu(x%)-M and ethanol ZnO:Eu(x%)-E). X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), optical absorption and photoluminescence (PL) spectroscopy were used for characterization of the nanoparticles. Our results showed influence of europium doping and solvents on size, particles agglomeration, light absorption and photocatalytic activity. Improvement in photocatalytical activity with addition of Eu3+ doping was detected. Particle size increased with Eu3+ doping in water samples, while it decreased in methanol. Agglomeration was more prominent in ZnO:Eu(x%)-W samples. Greater amount of surface OH groups in case of ZnO:Eu(x%)-M samples was detected by PL, XPS and FTIR measurements. Influence of europium doping, as an electron trap, and surface OH groups, as a hole trap, was studied in sunlight photocatalytic degradation of cationic methylene blue (MB) and anionic methyl orange (MO). Improved photocatalytic behavior was discussed and influence of active species was further investigated using hole and hydroxyle radical scavengers. The degradation pathway of MB and MO, using high performance liquid chromatohraphy (HPLC), is also examined.read more
Citations
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Pore size distribution dependent controlling selective degradation of binary dye effluent
TL;DR: In this paper, mesoporous and microporous strontium titanate (STO) were prepared by facile hydrothermal process using carboxymethyl cellulose (CMC) and cetyltrimethyl ammonium bromide (CTAB) as controlling agent.
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Thermally induced oxygen related defects in eco-friendly ZnFe2O4 nanoparticles for enhanced wastewater treatment efficiencies
TL;DR: In this paper , a thermal annealing strategy was proposed to modulate oxygen vacancies related defects in ZnFe2O4 (ZFO) nanoparticles for obtaining enhanced wastewater treatment efficiencies.
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Visible light-induced catalytic abatement of 4-nitrophenol and Rhodamine B using ZnO/g-C3N4 catalyst
TL;DR: In this article, pure ZnO and g-C3N4 were synthesized using coprecipitation and simple calcination methods, respectively, and impregnated on a g-c3n4 surface with 10, 20 and 30 weight percentages, respectively.
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Thermally induced oxygen related defects in eco-friendly ZnFe2O4 nanoparticles for enhanced wastewater treatment efficiencies.
B. Al-Najar,Adnan Younis,Layla J. Hazeem,Shama Sehar,Suad Rashdan,M. Nasiruzzaman Shaikh,Hanan Albuflasa,Nicholas P. Hankins +7 more
TL;DR: In this article, a thermal annealing strategy was proposed to modulate oxygen vacancies related defects in ZnFe2O4 (ZFO) nanoparticles for obtaining enhanced wastewater treatment efficiencies.
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The Auto-Combustion Method Synthesized Eu2O3- ZnO Nanostructured Composites for Electronic and Photocatalytic Applications
T.H. AlAbdulaal,V. Ganesh,Manal AlShadidi,Mai S.A. Hussien,A. Bouzidi,Hamed Algarni,Heba Y. Zahran,M. Sh. Abdel-wahab,I.S. Yahia,S. Nasr +9 more
TL;DR: In this paper , an efficient and environmentally friendly combustion technique was employed to produce ZnO nanopowders with different Eu concentrations (from 0.001 g to 5 g).
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