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Số người truy cập: 75,104,053

 Synthesis and Characterization of V2O5, TiO2 and CeO2 nanoparticles and their composites over modified MWCNTs and application in removal of methylene blue from water
Tác giả hoặc Nhóm tác giả: T.Abdullah, T.Juzsakova, RT.Rasheed, A.Redey, N.Al-Jammal, L.P.Cuong, AD.Salman, E.Domokos, TA.Abdulah, Z.Ali
Nơi đăng: 4th South east european conference on sustainable development of energy, water and environment systems, Sarajevo, Bosnia & Herzegovina, July 2020; Số: 1;Từ->đến trang: 219;Năm: 2020
Lĩnh vực: Môi trường; Loại: Báo cáo; Thể loại: Quốc tế
TÓM TẮT
In our research,MWCNTswerefunctionalizedwithstrongacidsH2SO4 andHNO3intheratioof 3 :1. Then the oxidized MWCNTs were modified with vanadium-pentoxide (V2O5) nanoparticles and different composites (V2O5:TiO2, V2O5:CeO2 and V2O5:TiO2:CeO2). The composite nanoparticle mixtures including V2O5:TiO2 and V2O5:CeO2 were prepared by mixing V2O5 and TiO2 as well as V2O5 and CeO2 nanoparticles having a mole ratio of 3:1 mole respectively. The com posite V2O5:TiO2:CeO2, wasprepared by mixing V2O5:TiO2:CeO2 nanoparticles in a mole ratio of 3:0.5:0.5.nanocompositespreparationwasdoneusingthermalmethod.MWCNTshavebeen m odified with 3 wt% V2O5:TiO2, V2O5:CeO2 andV2O5:TiO2:CeO2 composite nanoparticles using t h ermal m ethod. In order to determine the structure and the chemical nature of the nanoparticles prepared, thecharacterization wascarriedout by X-ray diffraction (XRD). The morphology of the nanoparticle surface was studied with Field Emission Scanning Electron Microscopy (FESEM). For detection of elements of nanocomposites and modified MWCNTs was using Energy- dispersive X-ray spectroscopy (EDX). In order to study the surface roughness, Atomic Force Microscopy (AFM)wasusedfordeterminationoftheimagingsurfacestructuresinthenmscale. Fourier Transform Infrared Spectrometer (FTIR) was used to investigate the vibrations of functional groups in vanadium pentoxide. The adsorption procedures have been carried out for all V2O5 modified MWCNTs preparations and their composite nanoparticles. Different solution temperatures, different nanoparticles in differentratios anddifferent contact times were studied to determine the optimum efficiency for removal of m ethylene blue fr om water. V2O5:CeO2 com positenanoparticles modified MWCNTs exhibitedthehighest removalefficiency whichwas 1 00% after 30 m inutes, as compared with other nanoparticles m odified composite MWCNTs (V2O5:TiO2 and V2O5:TiO2:CeO2).
ABSTRACT
[ 2020\2020m09d029_12_2_5Trang_220.pdf ]
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