Medieval Churches with Stained Glass Were Photocatalytic Air Purifiers

Last updated on: January 10, 2013 at 11:00 am by Joe Carter

Medieval Churches with Stained Glass Were Photocatalytic Air Purifiers 2013-01-06T03:49:02+00:00 Joe Carter

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A researcher has found that tiny gold particles found in medieval gold paint reacted with sunlight to destroy air-borne pollutants:

The glaziers who created gold-painted stained glass windows for medieval churches in Europe inadvertently developed a solar-powered nanotech air-purification system.

According to Zhu Huai Yong, an associate professor at Queensland University of Technology in Australia, the gold paint used in medieval-era stained glass windows purified the air when heated by sunlight.

“For centuries people appreciated only the beautiful works of art, and long life of the colors, but little did they realize that these works of art are also, in modern language, photocatalytic air purifier with nanostructured gold catalyst,” said Zhu in a statement.

(Via: Fr. Z’s Blog)

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