P2GS.1 - QCM formaldehyde sensing probes: design and sensing mechanism
- 17th International Meeting on Chemical Sensors - IMCS 2018
2018-07-15 - 2018-07-19
- P-2 - Gas Sensors
- J. Xu, L. Wang - NEST Lab, Department of physics, Department of chemistry, College of Science, Shanghai University, Shanghai (China)
- 771 - 772
Formaldehyde (HCHO) is a common indoor noxious gas that needed to be detected in real time. Quartz crystal microbalance (QCM) is a transducer, which can be modified by various chemical sensing probes to detect specific gases. There have been some studies on QCM HCHO sensor, but none of them explored and validated the HCHO sensing mechanism, which is crucial for the rational design of sensing materials. In recent years, we have designed a series of new sensing probes based on QCM to detect HCHO, including polydopamine (PDA) related materials and diamino diphenyl sulfone (DDS) related materials. Gaussian 09 software was used to simulate the sensing mechanism of Schiff base adsorption and hydrogen-bonding adsorption. Besides, we have made waterproof optimization for these probes to enhance their application potential.