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Dr Omar Yassine demonstrates a remarkable 100ppb detection of hydrogen sulfide (H2S)

posted Nov 3, 2016, 7:11 PM by Khaled salama   [ updated Dec 1, 2016, 9:14 AM ]
We continue our strong Collaboration with Prof. M. Eddaoudi on gas sensing.  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.  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. More details can be found at:

Omar Yassine, Osama Shekhah, Ayalew H. Assen, Youssef Belmabkhout, Khaled N. Salama and Mohamed Eddaoudi "H2S Sensors: Fumarate-Based fcu-MOF Thin Film Grown on a Capacitive Interdigitated Electrode" , Angew. Chem. Int. Ed.. doi:10.1002/anie.201608780

This builds on our earlier work with Eddaoudi's group:
  1. Sapsanis, C.; Omran, H.; Chernikova, V.; Shekhah, O.; Belmabkhout, Y.; Buttner, U.; Eddaoudi, M.; Salama, K.N. Insights on Capacitive Interdigitated Electrodes Coated with MOF Thin Films: Humidity and VOCs Sensing as a Case Study.Sensors15, 18153-18166, 2015.