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
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Dissertation
Development of a novel photocatalytic reactor for the treatment of polycyclic aromatic hydrocarbons
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Journal ArticleDOI
Facile Synthesis of Fe 3 O 4 −SiO 2 Nanocomposites for Wastewater Treatment
Muhammad Yaseen,Abbas H. Khan,Muhammad Humayun,Saima Farooq,Nasrullah Shah,Shaista Bibi,Zafar A. K. Khattak,Ata-Ur Rehman,Sajjad Ahmad,Shah Masood Ahmad,Mohamed Bououdina,Habib Ullah +11 more
TL;DR: In this article , the fabrication of Fe3O4−SiO2 nanocomposite via facile co-precipitation and Stober methods is reported, which is employed in catalytic and photocatalytic applications toward the removal of methylene blue (MB) and methyl orange (MO) dyes from a comparative perspective.
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Construction of MoS2/CdS/Bi2MoO6 Z-scheme photocatalyst for efficient photocatalytic degradation under visible-light
Zhan Wang,Jinlong Li,Shanshan Fu,Dongxuan Guo,Jing Tang,Xue Yang,Rong Xu,Guozhe Sui,Shijie Chen +8 more
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Cornstalk biochar-TiO2 composites as alternative photocatalyst for degrading methyl orange
Ying Jiang,A Liu +1 more
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Influence of Wurtzite ZnO Morphology on Piezophototronic Effect in Photocatalysis
Xiaowen Su,Xiao-Ru Zhao,Chao Cui,Ning Xi,Xiao Li Zhang,Hong Cheng Liu,Xiao Mei Yu,Yuanhua Sang +7 more
TL;DR: In this paper , the effect of morphology and exposed facets on photo-induced charge separation was analyzed for the degradation of Rhodamine B under the same mechanical energy source provided by ultrasound.
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