A three-phase copper MOF-graphene-polyaniline composite for effective sensing of ammonia
- Authors
- Bhardwaj, Sanjeev K.; Mohanta, Girish C.; Sharma, Amit L.; Kim, Ki-Hyun; Deep, Akash
- Issue Date
- Dec-2018
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Metal-organic framework; Graphene; Polyaniline; Composite; Sensor; Ammonia
- Citation
- ANALYTICA CHIMICA ACTA, v.1043, pp.89 - 97
- Indexed
- SCIE
SCOPUS
- Journal Title
- ANALYTICA CHIMICA ACTA
- Volume
- 1043
- Start Page
- 89
- End Page
- 97
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/2989
- DOI
- 10.1016/j.aca.2018.09.003
- ISSN
- 0003-2670
- Abstract
- In this work, a three-phase composite material consisting of SiO2-coated Cu-MOF, single layer graphene, and aniline was synthesized. In the presence of ammonium persulfate as an oxidant, the aniline component of this mixture was polymerized to polyaniline to bridge Cu-MOF and graphene in the composite. Hence, a new sensory material with a highly porous nature (MOF) and superior conduction properties (graphene/polyaniline) was constructed. More specifically, the inclusion of Cu-MOF in the matrix facilitated the acquisition of an electrochemically active sensory material with a high surface area of about 756m(2)/g. The potential application of this porous semiconducting material was demonstrated for sensitive detection of ammonia in a linear detection range over 1-100 ppm with a low limit of detection of 0.6 ppm.
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