Interface-Sensitized Chemiresistor: Integrated Conductive and Porous Metal-Organic Frameworks
Cited 0 times inCited 0 times in
- Interface-Sensitized Chemiresistor: Integrated Conductive and Porous Metal-Organic Frameworks
- Cho, Sujee; Park, Chungseong; Jeon, Mingyu; Lee, Jae Hwa; Kwon, Ohmin; Seong, Seoyeon; Kim, Jihan; Kim, Il-Doo; Moon, Hoi Ri
- Issue Date
- ELSEVIER SCIENCE SA
- CHEMICAL ENGINEERING JOURNAL, v.449, pp.137780
- Research to develop ideal sensing devices for toxic gases is on the rise, and amongst various materials, metal--organic frameworks (MOFs) have opened up promising vistas as chemiresistive sensors due to their high structural and functional tunability. Here, we report the composites of dimensionally (2D and 3D) and func-tionally (conductive and porous) different two MOFs in the form of a well-integrated core-shell structure. The hierarchically assembled 2D-MOF@3D-MOF exhibits new interfacial properties that are responsible for syn-ergetically enhanced sensing performances toward toxic H2S gas with the lowest recorded limit of detection (1.4 ppb), superior sensitivity (& UDelta;R/R0 = 3.37), and outstanding selectivity at room temperature in air. The sensing mechanisms are proposed by combinational studies of experiments and calculation, which indicates that multiple changes (e.g., local structural change of the shell MOF, secondary binding sites generation from the core MOF, and free radicals formation) play a critical role in achieving synergetic chemiresistive sensing.
- Appears in Collections:
- CHM_Journal Papers
- Files in This Item:
- There are no files associated with this item.
can give you direct access to the published full text of this article. (UNISTARs only)
Show full item record
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.