Synthesis of nano zerovalent iron nanoparticles – Graphene composite for the treatment of lead contaminated water.
Abstract: A Nano zerovalent iron nanoparticles graphene composite (G-nZVI) was prepared via a sodium borohydride reduction of graphene oxide and iron chloride under an argon atmosphere. Powder X-ray diffraction patterns showed the formation of the magnetic graphene/nanoscale-zerovalent-iron (G-nZVI)...
| Publicado en: | Journal of Environmental Management Vol. 130; pp. 429 - 436 |
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| Autores principales: | , , |
| Formato: | Artículo |
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Academic Press Inc.
Nov2013
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=91936560&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 91936560 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 03014797 EMJ jtl: Journal of Environmental Management issn: 03014797 maglogo: N pubinfo: dt: Nov2013 vid: 130 pid: 735 pub: Academic Press Inc. artinfo: ui: 91936560 10.1016/j.jenvman.2013.08.022 ppf: 429 ppct: 7 formats: tig: atl: Synthesis of nano zerovalent iron nanoparticles – Graphene composite for the treatment of lead contaminated water. aug: au: Jabeen, Humera Kemp, K. Christian Chandra, Vimlesh affil: Department of Chemistry, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea su: Water pollution Zero-valent iron Nanoparticles & the environment Graphite composites Lead toxicology Lead in water X-ray diffraction sug: subj: Water pollution Zero-valent iron Nanoparticles & the environment Graphite composites Lead toxicology Lead in water X-ray diffraction keyword: Contaminated water remediation Graphene Lead Magnetic separation Nanoscale-zerovalent-iron Contaminated water remediation Graphene Lead Magnetic separation Nanoscale-zerovalent-iron ab: Abstract: A Nano zerovalent iron nanoparticles graphene composite (G-nZVI) was prepared via a sodium borohydride reduction of graphene oxide and iron chloride under an argon atmosphere. Powder X-ray diffraction patterns showed the formation of the magnetic graphene/nanoscale-zerovalent-iron (G-nZVI) composites and bare nanoscale-zerovalent-iron (nZVI) particles. TEM analysis shows the formation of ∼10 nm particles. Adsorption experiments show a maximum Pb(II) adsorption capacity for the G-nZVI composite with 6 wt% graphene oxide loading. Additionally the effects of pH, temperature, contact time, ionic strength and initial metal ion concentration on Pb(II) ion removal were studied. X-ray photoelectron spectroscopy analysis after adsorption results confirmed the composite's ability to adsorb and immobilize lead more efficiently in its zerovalent and bivalent forms, as compared to bare iron nanoparticles. The adsorption of Pb(II) ions fit a pseudo-second-order kinetic model, and adsorption isotherms can be described using the Freundlich equations. G-nZVI shows great potential as an efficient adsorbent for lead immobilization from water, as it exhibits stability, reducing power, a large surface area, and magnetic separation. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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