The Adsorption Properties ofBacillus atrophaeusSpores on Single-Wall Carbon Nanotubes View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2009

AUTHORS

P. Cortes, S. Deng, G. B. Smith

ABSTRACT

An adsorption equilibrium and a kinetic study of Bacillus atrophaeus on Single-Wall Carbon Nanotubes (SWCNTs) were here performed to provide the basis for developing biosensor devices for detecting threatening micro-organisms in water supply systems. B. atrophaeus spores and carbon nanotubes were subjected to a batch adsorption process to document their equilibria and kinetics. Here, commercial nanotubes were either studied as received or were acid-purified before adsorption experiments. The Bacillus spores appear to show higher affinity towards the purified nanotubes than to the as-received nanomaterial. The effective diffusivity of the spores onto the purified nanotubes was found to be approximately 30 percent higher than onto the as-received nanotubes. It seems that the removal of amorphous carbon from the as-received nanotubes through a purification process yielded an intimate nantoubes-spore interaction as revealed by transmission electron microscopy. Freundlich model successfully correlated the adsorption equilibrium data for the nanotubes-spore interaction. Transmission electron micrographs showed extensive contact between the Bacillus and the purified nanotubes, but the association appeared less intimate between the spores and the as-received nanotubes. More... »

PAGES

1-6

Journal

TITLE

Journal of Sensors

ISSUE

N/A

VOLUME

2009

Author Affiliations

Identifiers

URI

http://scigraph.springernature.com/pub.10.1155/2009/131628

DOI

http://dx.doi.org/10.1155/2009/131628

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1049176786


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