Navigation Links
Air-purifying church windows early nanotechnology
Date:8/21/2008

Stained glass windows that are painted with gold purify the air when they are lit up by sunlight, a team of Queensland University of Technology experts have discovered.

Associate Professor Zhu Huai Yong, from QUT's School of Physical and Chemical Sciences said that glaziers in medieval forges were the first nanotechnologists who produced colours with gold nanoparticles of different sizes.

Professor Zhu said numerous church windows across Europe were decorated with glass coloured in gold nanoparticles.

"For centuries people appreciated only the beautiful works of art, and long life of the colours, but little did they realise that these works of art are also, in modern language, photocatalytic air purifier with nanostructured gold catalyst," Professor Zhu said.

He said tiny particles of gold, energised by the sun, were able to destroy air-borne pollutants like volatile organic chemical (VOCs), which may often come from new furniture, carpets and paint in good condition.

"These VOCs create that 'new' smell as they are slowly released from walls and furniture, but they, along with methanol and carbon monoxide, are not good for your health, even in small amounts," he said.

"Gold, when in very small particles, becomes very active under sunlight.

"The electromagnetic field of the sunlight can couple with the oscillations of the electrons in the gold particles and creates a resonance.

"The magnetic field on the surface of the gold nanoparticles can be enhanced by up to hundred times, which breaks apart the pollutant molecules in the air."

Professor Zhu said the by-product was carbon dioxide, which was comparatively safe, particularly in the small amounts that would be created through this process.

He said the use of gold nanoparticles to drive chemical reactions opened up exciting possibilities for scientific research.

"This technology is solar-powered, and is very energy efficient, because only the particles of gold heat up," he said.

"In conventional chemical reactions, you heat up everything, which is a waste of energy.

"Once this technology can be applied to produce specialty chemicals at ambient temperature, it heralds significant changes in the economy and environmental impact of the chemical production."


'/>"/>

Contact: Rachael Wilson
rachael.wilson@qut.edu.au
Queensland University of Technology
Source:Eurekalert  

Related biology news :

1. Futronic Announces Microsoft Vista and Windows 2008 Server Support for Its Fingerprint Logon Software
2. 60 second test could help early diagnosis of common brain diseases
3. Restless legs syndrome affects nearly 2 percent of US/UK children
4. Bleeding, not inflammation, is major cause of early lung infection death
5. Pig study sheds new light on the colonisation of Europe by early farmers
6. Color contrast is seen by the brain early doors
7. Extra gene copies were enough to make early humans mouths water
8. Was ability to run early mans Achilles heel?
9. New technique can be breakthrough for early cancer diagnosis
10. Yam bean a nearly forgotten crop
11. NIH awards nearly $23M to University of Chicago for translational research
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Air-purifying church windows early nanotechnology
(Date:6/14/2017)... (NYSE: IBM ) is introducing several innovative partner startups ... collaboration between startups and global businesses, taking place in ... nine startups will showcase the solutions they have built with ... France is one of the ... percent increase in the number of startups created between 2012 ...
(Date:5/16/2017)... 16, 2017   Bridge Patient Portal , ... MD EMR Systems , an electronic medical ... GE, have established a partnership to build an ... the GE Centricity™ products, including Centricity Practice Solution ... These new integrations will allow healthcare delivery ...
(Date:4/19/2017)... New York , April 19, 2017 ... competitive, as its vendor landscape is marked by the ... the market is however held by five major players ... Safran. Together these companies accounted for nearly 61% of ... of the leading companies in the global military biometrics ...
Breaking Biology News(10 mins):
(Date:10/9/2017)... , Oct. 9, 2017  BioTech Holdings announced ... by which its ProCell stem cell therapy prevents ... ischemia.  The Company, demonstrated that treatment with ProCell ... limbs saved as compared to standard bone marrow ... HGF resulted in reduction of therapeutic effect.  ...
(Date:10/9/2017)... (PRWEB) , ... October 09, 2017 , ... At its ... Dr. Christopher Stubbs, a professor in Harvard University’s Departments of Physics and Astronomy, has ... was a member of the winning team for the 2015 Breakthrough Prize in Fundamental ...
(Date:10/9/2017)... ... October 09, 2017 , ... ... 2017, in the medical journal, Epilepsia, Brain Sentinel’s SPEAC® System which uses ... EEG, in detecting generalized tonic-clonic seizures (GTCS) using surface electromyography (sEMG). The ...
(Date:10/7/2017)... ... October 06, 2017 , ... ... genomic technologies, launched its ProxiMeta™ Hi-C metagenome deconvolution product, featuring the first ... accompanying cloud-based bioinformatics software to perform Hi-C metagenome deconvolution using their own ...
Breaking Biology Technology: