Formaldehyde Detector and Cleaner Using Fe-TiO2
XinYan Chen · San Gabriel, California
Craig R. Barrett Award for Innovation ($10,000) · Regeneron International Science and Engineering Fair · 2025
A single low-cost device that both measures indoor formaldehyde and breaks it down photocatalytically using iron-doped titanium dioxide.
Reported indoor formaldehyde reduced by nearly 90% over 18 hours.
Detection and remediation in one unit means the device can show its own effect. That is a self-validating design — the measurement is the evidence that the treatment worked.
- Iron-doped titanium dioxide photocatalysis
- Formaldehyde concentration measurement
- Combined detection and remediation in one device
- Time-series concentration monitoring
- A device that measures what it changes can prove its own effect
- Report the time window with the percentage; 90% over 18 hours and 90% over 18 minutes are different claims
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