Tunable Synthesis and Immobilization of Zero-Valent Iron Nanoparticles for Environmental Applications

Zero-valent iron (ZVI) nanoparticles were synthesized and immobilized using supported polyelectrolyte multilayers as nanoreactors. The ZVI nanoparticles so produced were found to exhibit superior reactivity with respect to chemical reduction and deactivation of trichloroethylene, a compound represen...

Full description

Saved in:
Bibliographic Details
Published in:Environmental science & technology 2008-12, Vol.42 (23), p.8884-8889
Main Authors: Huang, Qingguo, Shi, Xiangyang, Pinto, Roger A, Petersen, Elijah J, Weber, Walter J
Format: Article
Language:English
Subjects:
Applied sciences
Chemical synthesis
Design optimization
Elements
Environmental Restoration and Remediation
Exact sciences and technology
Glass
Hydrogen-Ion Concentration
Iron
Iron - chemistry
Kinetics
Metal Nanoparticles - chemistry
Metal Nanoparticles - ultrastructure
Microspheres
Nanoparticles
Organic contaminants
Particle Size
Pollution
Remediation and Control Technologies
Trichloroethylene - chemistry
Trichloroethylene - isolation & purification
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Zero-valent iron (ZVI) nanoparticles were synthesized and immobilized using supported polyelectrolyte multilayers as nanoreactors. The ZVI nanoparticles so produced were found to exhibit superior reactivity with respect to chemical reduction and deactivation of trichloroethylene, a compound representative of a major class of chlorinated organic contaminants. Manipulation of polyelectrolyte multilayer architectures and synthesis conditions rendered the properties and reactivities of the resulting ZVI nanoparticles readily tunable. In particular, the reactivity of ZVI nanoparticles appears to depend strongly on certain architectural features of the polyelectrolyte multilayer that are regulated by the pH of the assembly media. The results suggest significant potential for use of the polyelectrolyte multilayer approach to fabricate reactive iron nanoparticles for a broad range of environmental applications, and provide a scientific basis for material design and optimization.
ISSN:0013-936X
1520-5851
DOI:10.1021/es8015588