Trace-level gravimetric detection promoted by surface interactions of mesoporous materials with chemical vapors

Chemical-vapor detection was enhanced by coating high-surface-area mesoporous materials over a Au electrode for gravimetric QCM sensing, referred to as the “meso-QCM system”. The AlPO-based meso-QCM system is very promising for quantitative detection at a trace level from several tens of ppb to several ppb due to selective interaction of the framework surfaces.