Ni2(dobdc) MOF (metal-organic framework) nanocrystals for ultra-sensitive detection of ppb-level co with resonant-cantilever

摘要

MOF (metal-organic framework) material of Ni_2(dobdc) (where dobdc = 1,4-dioxido-2,5-benzenedicarboxylate) nanocrystals is, for the first time, explored as resonant-gravimetric sensing material for CO detection. Due to the ultra-high surface-area and the active metal center-sites, the MOF of Ni_2(dobdc) exhibits adsorbing induced high-performance sensing to CO gas. By loading the MOF material onto resonant microcantilever, the gravimetric sensor has experimentally exhibited response to 80ppb CO, which indicates an extremely-high sensitivity.