Iron oxide nanoparticle synthesis in aqueous and membrane systems for oxidative degradation of trichloroethylene from water

Minghui Gui; Vasile Smuleac; Lindell E. Ormsbee; David L. Sedlak; Dibakar Bhattacharyya

doi:10.1007/s11051-012-0861-1

Iron oxide nanoparticle synthesis in aqueous and membrane systems for oxidative degradation of trichloroethylene from water

Minghui Gui, Vasile Smuleac, Lindell E. Ormsbee, David L. Sedlak, Dibakar Bhattacharyya

Research output: Contribution to journal › Article › peer-review

51 Scopus citations

Abstract

The potential for using hydroxyl radical (OH^̇) reactions catalyzed by iron oxide nanoparticles (NPs) to remediate toxic organic compounds was investigated. Iron oxide NP_s were synthesized by controlled oxidation of iron NP_s prior to their use for contaminant oxidation (by H₂O₂ addition) at nearneutral pH values. Cross-linked polyacrylic acid (PAA) functionalized polyvinylidene fluoride (PVDF) microfiltration membranes were prepared by in situ polymerization of acrylic acid inside the membrane pores. Iron and iron oxide NP_s (80-100 nm) were directly synthesized in the polymer matrix of PAA/ PVDF membranes, which prevented the agglomeration of particles and controlled the particle size. The conversion of iron to iron oxide in aqueous solution with air oxidation was studied based on X-ray diffraction, Mössbauer spectroscopy and BET surface area test methods. Trichloroethylene (TCE) was selected as the model contaminant because of its environmental importance. Degradations of TCE and H ₂O₂ by NP surface generated OH^̇ were investigated. Depending on the ratio of iron and H₂O₂, TCE conversions as high as 100 % (with about 91 % dechlorination) were obtained. TCE dechlorination was also achieved in real groundwater samples with the reactive membranes.

Original language	English
Article number	861
Journal	Journal of Nanoparticle Research
Volume	14
Issue number	5
DOIs	https://doi.org/10.1007/s11051-012-0861-1
State	Published - May 2012

Bibliographical note

Funding Information:
Acknowledgments This research was supported by a joint National Institute of Environmental Health Sciences (NIEHS) SRP Supplement grant between University of Kentucky (UK) and University of California at Berkeley, UK-NIEHS-SRP program and by the US Department of Energy (DOE) KRCEE programs (DE-FG05-03OR23032). We thank Dr. Frank E. Huggins from Department of Chemical and Materials Engineering at UK for Mössbauer spectroscopy analytical support.

Funding

Acknowledgments This research was supported by a joint National Institute of Environmental Health Sciences (NIEHS) SRP Supplement grant between University of Kentucky (UK) and University of California at Berkeley, UK-NIEHS-SRP program and by the US Department of Energy (DOE) KRCEE programs (DE-FG05-03OR23032). We thank Dr. Frank E. Huggins from Department of Chemical and Materials Engineering at UK for Mössbauer spectroscopy analytical support.

Funders	Funder number
US Department of Energy
Michigan State University-U.S. Department of Energy (MSU-DOE) Plant Research Laboratory	DE-FG05-03OR23032
National Institute of Environmental Health Sciences (NIEHS)
University of California Berkeley
University of Kentucky

Keywords

Functionalized membrane
Heterogeneous Fenton
Hydrogen peroxide
Hydroxyl radical
Iron oxide nanoparticles
TCE dechlorination

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
Bioengineering
Atomic and Molecular Physics, and Optics
General Materials Science
Modeling and Simulation

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Cite this

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title = "Iron oxide nanoparticle synthesis in aqueous and membrane systems for oxidative degradation of trichloroethylene from water",

abstract = "The potential for using hydroxyl radical (O{\.H}) reactions catalyzed by iron oxide nanoparticles (NPs) to remediate toxic organic compounds was investigated. Iron oxide NPs were synthesized by controlled oxidation of iron NPs prior to their use for contaminant oxidation (by H2O2 addition) at nearneutral pH values. Cross-linked polyacrylic acid (PAA) functionalized polyvinylidene fluoride (PVDF) microfiltration membranes were prepared by in situ polymerization of acrylic acid inside the membrane pores. Iron and iron oxide NPs (80-100 nm) were directly synthesized in the polymer matrix of PAA/ PVDF membranes, which prevented the agglomeration of particles and controlled the particle size. The conversion of iron to iron oxide in aqueous solution with air oxidation was studied based on X-ray diffraction, M{\"o}ssbauer spectroscopy and BET surface area test methods. Trichloroethylene (TCE) was selected as the model contaminant because of its environmental importance. Degradations of TCE and H 2O2 by NP surface generated O{\.H} were investigated. Depending on the ratio of iron and H2O2, TCE conversions as high as 100 % (with about 91 % dechlorination) were obtained. TCE dechlorination was also achieved in real groundwater samples with the reactive membranes.",

keywords = "Functionalized membrane, Heterogeneous Fenton, Hydrogen peroxide, Hydroxyl radical, Iron oxide nanoparticles, TCE dechlorination",

author = "Minghui Gui and Vasile Smuleac and Ormsbee, {Lindell E.} and Sedlak, {David L.} and Dibakar Bhattacharyya",

note = "Funding Information: Acknowledgments This research was supported by a joint National Institute of Environmental Health Sciences (NIEHS) SRP Supplement grant between University of Kentucky (UK) and University of California at Berkeley, UK-NIEHS-SRP program and by the US Department of Energy (DOE) KRCEE programs (DE-FG05-03OR23032). We thank Dr. Frank E. Huggins from Department of Chemical and Materials Engineering at UK for M{\"o}ssbauer spectroscopy analytical support.",

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AU - Sedlak, David L.

AU - Bhattacharyya, Dibakar

N1 - Funding Information: Acknowledgments This research was supported by a joint National Institute of Environmental Health Sciences (NIEHS) SRP Supplement grant between University of Kentucky (UK) and University of California at Berkeley, UK-NIEHS-SRP program and by the US Department of Energy (DOE) KRCEE programs (DE-FG05-03OR23032). We thank Dr. Frank E. Huggins from Department of Chemical and Materials Engineering at UK for Mössbauer spectroscopy analytical support.

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N2 - The potential for using hydroxyl radical (OḢ) reactions catalyzed by iron oxide nanoparticles (NPs) to remediate toxic organic compounds was investigated. Iron oxide NPs were synthesized by controlled oxidation of iron NPs prior to their use for contaminant oxidation (by H2O2 addition) at nearneutral pH values. Cross-linked polyacrylic acid (PAA) functionalized polyvinylidene fluoride (PVDF) microfiltration membranes were prepared by in situ polymerization of acrylic acid inside the membrane pores. Iron and iron oxide NPs (80-100 nm) were directly synthesized in the polymer matrix of PAA/ PVDF membranes, which prevented the agglomeration of particles and controlled the particle size. The conversion of iron to iron oxide in aqueous solution with air oxidation was studied based on X-ray diffraction, Mössbauer spectroscopy and BET surface area test methods. Trichloroethylene (TCE) was selected as the model contaminant because of its environmental importance. Degradations of TCE and H 2O2 by NP surface generated OḢ were investigated. Depending on the ratio of iron and H2O2, TCE conversions as high as 100 % (with about 91 % dechlorination) were obtained. TCE dechlorination was also achieved in real groundwater samples with the reactive membranes.

AB - The potential for using hydroxyl radical (OḢ) reactions catalyzed by iron oxide nanoparticles (NPs) to remediate toxic organic compounds was investigated. Iron oxide NPs were synthesized by controlled oxidation of iron NPs prior to their use for contaminant oxidation (by H2O2 addition) at nearneutral pH values. Cross-linked polyacrylic acid (PAA) functionalized polyvinylidene fluoride (PVDF) microfiltration membranes were prepared by in situ polymerization of acrylic acid inside the membrane pores. Iron and iron oxide NPs (80-100 nm) were directly synthesized in the polymer matrix of PAA/ PVDF membranes, which prevented the agglomeration of particles and controlled the particle size. The conversion of iron to iron oxide in aqueous solution with air oxidation was studied based on X-ray diffraction, Mössbauer spectroscopy and BET surface area test methods. Trichloroethylene (TCE) was selected as the model contaminant because of its environmental importance. Degradations of TCE and H 2O2 by NP surface generated OḢ were investigated. Depending on the ratio of iron and H2O2, TCE conversions as high as 100 % (with about 91 % dechlorination) were obtained. TCE dechlorination was also achieved in real groundwater samples with the reactive membranes.

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Iron oxide nanoparticle synthesis in aqueous and membrane systems for oxidative degradation of trichloroethylene from water

Abstract

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Keywords

ASJC Scopus subject areas

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