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Characteristics of iron oxide/activated carbon nanocomposites prepared using supercritical water

Paper ID Volume ID Publish Year Pages File Format Full-Text
43492 45972 2008 6 PDF Available
Title
Characteristics of iron oxide/activated carbon nanocomposites prepared using supercritical water
Abstract

The properties of nanocomposites obtained by depositing iron oxide nanoparticles in the pores of two types of commercial activated carbon pellets using supercritical water were studied as a function of process variables. The loading of iron oxide nanoparticles in the nanocomposites increased with precursor concentration and immersion time, but was apparently unaffected by the temperature. The specific surface area and pore volume of the nanocomposites decreased with increased loading of the nanoparticles, possibly due to pore blockage and/or pore destruction resulting from acid attack during processing. The results suggest that an optimum loading of nanoparticles in the nanocomposites can be achieved by manipulating pellet dimensions, precursor concentration, and immersion time.

Graphical abstractThe deposition of iron oxide nanoparticles in activated carbon pellets, and the morphological characteristics of the resulting nanocomposites, were investigated for a supercritical deposition process. The loading increased with several process variables. However, the specific area and pore volume decreased when the loading capacity increased, which suggests that an optimum loading capacity may be achieved in the supercritical process.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Supercritical water; Activated carbon; Iron oxide; Nanocomposite
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Characteristics of iron oxide/activated carbon nanocomposites prepared using supercritical water
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 348, Issue 2, 15 October 2008, Pages 251–256
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us