Abstract
Herein we report the fabrication of an advanced sensor for the detection of hydrogen sulfide (H2S) at room temperature, using thin films of rare‐earth metal (RE)‐based metal–organic framework (MOF) with underlying fcu topology. This unique MOF‐based sensor is made via the in situ growth of fumarate‐based fcu‐MOF (fum‐fcu‐MOF) thin film on a capacitive interdigitated electrode. The sensor showed a remarkable detection sensitivity for H2S at concentrations down to 100 ppb, with the lower detection limit around 5 ppb. The fum‐fcu‐MOF sensor exhibits a highly desirable detection selectivity towards H2S vs. CH4, NO2, H2, and C7H8 as well as an outstanding H2S sensing stability as compared to other reported MOFs.
Sense and sense ability: The detection of hydrogen sulfide at room temperature using the metal–organic framework (fum‐fcu‐MOF) as a sensitive layer deposited on capacitive interdigitated electrodes is demonstrated. H2S concentrations down to 100 ppb were detected with a limit of detection around 5 ppb.