Latest inventions in science and technology
Smog-Eating Photocatalytic Coatings
- Context: The Delhi government partnered with Indian Institute of Technology Madras to study “smog-eating” photocatalytic coatings for roads.
About Smog-Eating Photocatalytic Coatings
- Designed to neutralize harmful air pollutants like nitrogen dioxide and volatile hydrocarbons, which contribute to toxic smog
- Typically made with titanium dioxide (TiO₂)
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- Low-cost, chemically stable, and compatible with conventional construction materials
- TiO₂-based construction materials can break down harmful gases and aid environmental cleaning
- Uses photocatalytic activity to combat pollution
Mechanism
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- Light energy activates the coating
- Converts toxic gases and organic pollutants into less harmful or harmless substances
- Helps make air and water cleaner
