Functionalized TiO2 Nanoparticles for Use for in Situ Anion Immobilization

Anatase particles (40−60 nm) were coated with an organosilane monolayer terminated with an ethylenediamine (EDA) ligand. These functionalized nanoparticles (FNPs) were then treated with an aqueous solution of Cu(II) to create a cationic Cu−EDA complex bound to the nanoparticle surface. Cu(II) and ED...

Full description

Saved in:
Bibliographic Details
Published in:Environmental science & technology 2005-09, Vol.39 (18), p.7306-7310
Main Authors: Mattigod, Shas V, Fryxell, Glen E, Alford, Kentin, Gilmore, Tyler, Parker, Kent, Serne, Jeff, Engelhard, Mark
Format: Article
Language:English
Subjects:
Adsorption
ANIONS
Applied sciences
Aqueous solutions
Cations
CHELATING AGENTS
Copper - analysis
Cross-disciplinary physics: materials science
rheology
Earth sciences
Earth, ocean, space
Electrochemistry
Engineering and environment geology. Geothermics
Environmental Molecular Sciences Laboratory
ENVIRONMENTAL SCIENCES
Ethylenediamines - analysis
Exact sciences and technology
GROUND WATER
Groundwaters
HANFORD RESERVATION
Ions
Kinetics
Ligands
Magnetic Resonance Spectroscopy
Materials science
Models, Chemical
Nanoparticles
Nanoscale materials and structures: fabrication and characterization
NANOSTRUCTURES
Nanostructures - analysis
Nanotechnology
Natural water pollution
NUCLEAR FUEL CYCLE AND FUEL MATERIALS
Organic-inorganic hybrid nanostructures
Permeability
PERTECHNETATES
Physics
Pollution
Pollution, environment geology
Powders
REMEDIAL ACTION
Sodium Pertechnetate Tc 99m - analysis
Spectrometry, X-Ray Emission - methods
Spectroscopy, Fourier Transform Infrared
SURFACE PROPERTIES
Technetium - chemistry
Titanium - analysis
TITANIUM OXIDES
Water Pollutants
Water Purification - methods
Water treatment
Water treatment and pollution
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Anatase particles (40−60 nm) were coated with an organosilane monolayer terminated with an ethylenediamine (EDA) ligand. These functionalized nanoparticles (FNPs) were then treated with an aqueous solution of Cu(II) to create a cationic Cu−EDA complex bound to the nanoparticle surface. Cu(II) and EDA ligand incorporation were confirmed by X-ray photoelectron spectroscopy (XPS) analysis. The Cu(EDA)2 FNP was then studied for its binding affinity for pertechnetate anion from a Hanford groundwater matrix. The Cu(EDA)2 FNP was also evaluated for its injectability into a porous medium for possible application as a subsurface semipermeable reactive barrier. Injection was readily accomplished, and resulted in a highly uniform distribution of the FNP sorbent in the test column.
ISSN:0013-936X
1520-5851
DOI:10.1021/es048982l