10-Millisecond Light Flash Creates Platinum-Enhanced Molybdenum Disulfide for Sensitive NO2 Detection

Scientists have developed a rapid method to create highly sensitive nitrogen dioxide (NO2) sensors using intense light pulses lasting just 10 milliseconds. The process simultaneously produces molybdenum disulfide flakes and anchors isolated platinum atoms, significantly boosting the material's gas-sensing performance. At room temperature, the platinum-enhanced material achieved a response of 100.8% to NO2 at 400 parts per billion, with a detection limit as low as 17.2 parts per billion. Nitrogen dioxide is a harmful pollutant linked to respiratory issues, making precise detection crucial for environmental monitoring and public health. This novel one-step approach could lead to advanced gas sensors that are faster to manufacture and more sensitive than current options. Beyond sensing, the technique may also benefit catalysis and energy technologies, where single-atom catalysts are highly sought after. The findings highlight a promising path toward scalable production of high-performance sensing materials.