H₂S Sensors: Fumarate-Based fcu-MOF Thin Film Grown on a Capacitive Interdigitated Electrode

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• 作者：Dr. Omar Yassine ; Dr. Osama Shekhah ; Ayalew H. Assen ; Dr. Youssef Belmabkhout ; Prof. Khaled N. Salama and Prof. Mohamed Eddaoudi
• 刊名：Angewandte Chemie International Edition
• 出版年：2016
• 出版时间：December 19, 2016
• 年：2016
• 卷：55
• 期：51
• 页码：15879-15883
• 全文大小：2178K
• ISSN：1521-3773

文摘

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.