The Delhi government, in collaboration with IIT Madras, has begun studying the use of “smog eating” photocatalytic coatings on roads to tackle urban air pollution. Such environmental innovations are important for aspirants preparing through IAS coaching in Hyderabad, UPSC online coaching, and other civil services preparation programs.
Smog Eating Photocatalytic Coating
• Purpose: Neutralizes harmful gases like nitrogen dioxide and volatile hydrocarbons.
• Compound Used: Titanium dioxide (TiO₂) — low cost, stable, and compatible with construction materials.
Working Principle
• Uses light energy to trigger photocatalytic reactions.
• Breaks down toxic gases and organic pollutants into less harmful substances.
• Helps clean both air and water environments.
• Applications: Can be applied on roads, buildings, and construction surfaces to reduce pollution levels.
Understanding such technological solutions is essential for students preparing through UPSC coaching in Hyderabad and Hyderabad IAS coaching institutes, where environment and science-based interventions are key topics.
What is Smog?
• Definition: A mix of smoke, pollutants, and fog forming toxic air.
Types
• Sulfurous Smog – caused by burning coal and sulfur-rich fuels.
• Photochemical Smog – common in cities with heavy automobile use; formed by sunlight reacting with pollutants.
These environmental concepts are frequently covered in IAS coaching and civils coaching in Hyderabad, helping aspirants prepare for both Prelims and GS Paper 3.
Significance
• Helps reduce urban air pollution and improve public health.
• Provides a cost-effective, sustainable solution for cities struggling with smog.
• Supports India’s broader environmental goals and clean air initiatives.
Such applications are widely analysed in UPSC online coaching and structured UPSC coaching in Hyderabad programs.
Conclusion
The smog eating photocatalytic coating represents an innovative approach to pollution control. By combining science with infrastructure, India can move towards cleaner cities and healthier living environments. For aspirants preparing through IAS coaching in Hyderabad, UPSC coaching in Hyderabad, and civils coaching in Hyderabad, such topics are essential for mastering environment and science & technology sections in UPSC.
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