Trimethylamine sensing properties of MoO 3 nanofibers

The efficient and reliable monitoring of trimethylamine (TMA) is significant to environmental protection and human healthcare. The Molybdenum trioxide (MoO 3 ) nanofibers can be regarded as a promising sensing material with a low-detection limit for trimethylamine. MoO 3 nanofibers with controlled morphology were synthesized by adjusting electrospinning and calcination conditions. MoO 3 with the second-step calcination time is 90 s, which shows excellent trimethylamine sensing properties. The response of sensors based on M-90 nanofibers to 50 ppm acetone is 82.3 at 175 °C. And it has excellent selectivity to TMA. The sensors show good selectivity to TMA, compared to other gases to be measured. Finally, a detailed study of the sensing mechanism of MoO 3 is conducted to analyze the reasons for exhibiting high response to TMA.