When Nanotech Cleans Water


© Jin Xie/Stanford University

This tiny black rectangle is literally a water purifier. Researchers at Stanford University created a small device that uses solar energy to clean water. When dropped into a glass of water and exposed to sunlight, the device generates hydrogen peroxide that can eliminate 99.999% of the bacteria in the sample in just 20 minutes. Made of glass, the device is topped with nanoflakes of molybdenum disulfide, an industrial lubricant. In this process, it turns into a photocatalyst that absorbs the full range of visible sunlight.

About the Author

Journalist and the Editor-in-Chief for DirectIndustry e-magazine. She has years of experience in business issues for various media including France 24, Associated Press, Radio France…

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