Agnirva Space Premier League - Expedition #31115: Harnessing Space to Clean Our Air: The JAMSS Photocatalyst Mission
- Agnirva.com

- Aug 1, 2025
- 2 min read
Imagine a world where polluted air can be cleaned using light. That’s the vision behind the JAMSS Photocatalyst experiment, conducted on Expedition 67 aboard the International Space Station (ISS). Developed by the Japan Manned Space Systems Corporation (JAMSS), this pioneering mission showcases how photocatalysts—materials that use light to trigger chemical reactions—can help purify the air in closed environments like spacecraft.
Photocatalysts work by absorbing light, usually ultraviolet, which excites electrons in the material. These excited electrons can then interact with water and oxygen in the air to produce reactive species like hydroxyl radicals. These radicals are incredibly effective at breaking down harmful organic pollutants, bacteria, and viruses.
In space, maintaining clean air is not just a matter of comfort; it's critical for survival. On the ISS, astronauts live in a closed environment where contaminants can build up quickly. Traditional air filters work well, but they require regular replacement and maintenance. Photocatalysts, on the other hand, offer a potentially self-sustaining solution.
The JAMSS Photocatalyst experiment tested the performance of these materials in microgravity. Researchers wanted to see how effective the photocatalyst was at decomposing volatile organic compounds (VOCs) and other pollutants under the unique conditions of space. Results from this experiment could lead to new, low-maintenance air purification systems for future spacecraft and even for use in homes and hospitals on Earth.
This experiment is a testament to how space exploration can lead to practical, everyday benefits. By pushing the boundaries of technology in extreme environments, scientists are discovering new ways to tackle challenges like pollution and health hazards.
Join the Agnirva Space Internship Program to dive deeper into groundbreaking experiments like JAMSS Photocatalyst and explore the future of clean technology from orbit to Earth.



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