Zeolitic Imidazolate Framework Modified Film Bulk Acoustic Resonator for Highly Sensitive and Selective Alcohol Vapors Detection

摘要

There is an urgent need for the development of reliable gas sensors in our society due to their widespread applications. This work reports an integration of porous zeolitic imidazolate framework-8 (ZIF-8) with film bulk acoustic resonator (FBAR) to monitor alcohols vapor under ambient condition. The coating of sorptive nano-porous materials on FBAR is effective in improving sensitivity for micro sensor through increasing active surface area in contact with gas analytes. The sensitivity of as-prepared gas sensor was enhanced over 25 times in comparison with the bare one, and the sensor also exhibited selectivity towards different alcohol vapors.