MOF-Based Membrane Encapsulated ZnO Nanowires for Enhanced Gas Sensor Selectivity

• DOI: 10.1021/acsami.5b12062
• Publication Date: 2016-03-22T11:56:01Z
• Authors: Martin Drobek; Jae-Hun Kim; Mikhael Bechelany; Cyril Vallicari; Anne Julbe; Sang Sub Kim
• Keywords: [CHIM]Chemical Sciences; 02 engineering and technology; 0210 nano-technology

Gas sensors are of a great interest for applications including toxic or explosive gases detection in both in-house and industrial environments, air quality monitoring, medical diagnostics, control food/cosmetic properties. In the area semiconductor metal oxides (SMOs)-based sensors, lot effort has been devoted to improve sensing characteristics. this work, we report on general methodology improving selectivity SMOx nanowires based coverage ZnO with thin ZIF-8 molecular sieve membrane. The optimized ZnO@ZIF-8-based nanocomposite sensor shows markedly selective response H2 comparison pristine sensor, while showing negligible C7H8 C6H6. This original MOF-membrane encapsulation strategy applied architecture pave way other complex 3D architectures various types requiring either gas ion selectivity, such as biosensors, photo(catalysts), electrodes.