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Nanocoatings May Go for the Gold

Wednesday, August 18, 2010

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Dr. Adrian Fuchs

More durable paint with an intensified color spectrum is among the possibilities now that an Australian scientist has discovered a way to disperse gold nanoparticles evenly through plastic.

Adrian Fuchs, of Queensland University of Technology’s School of Physical and Chemical Sciences, said the technique he had developed was a model for dispersing metals in nanoparticle form throughout polymers or plastic materials.

Other potential applications include water purification, faster computers, tougher shoe soles, and lighter and cheaper televisions, Fuchs said.

"The properties of metals change when they are in nano form, and so combining the unique property of nanoparticles with plastic leads to a whole new range of composite materials that could be used for novel catalysts, drug delivery and coatings," said Fuchs.

"Paint is essentially a plastic, so when gold nanoparticles are added, it makes colors more intense across the whole visible spectrum. The paint would also be more durable when exposed to a harsh environment."

Gold has good conductivity and becomes a useful catalyst when mixed with different metals, Fuchs said.

"If you put gold nanoparticles with titanium dioxide using a plastic mold, you can make a very efficient catalyst to purify water; the titania absorbs the light and converts it into electricity, which is then passed into the conductive gold," he said.

Fuchs said his method for dispersing nanoparticles through plastic could also be applied to encapsulating drugs into plastic casings so that they could be ingested and used for cancer detection and destruction.

   

Tagged categories: Coating performance; Nano and hybrid coatings; Nanotechnology; Polymers; Research

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