Mesoporous Non-stacked Graphene-receptor Sensor for Detecting Nerve Agents

A novel gas sensor consisting of porous, non-stacked reduced graphene oxide (NSrGO)-heaxfluorohydoroxypropanyl benzene (HFHPB) nanosheets was successfully fabricated, allowing the detection of dimethyl methyl phosphonate (DMMP), similar to sarin toxic gas. The HFHPB group was chemically grafted to t...

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Bibliographic Details
Published in:Scientific reports 2016-09, Vol.6 (1), p.33299, Article 33299
Main Authors: Hwang, Hee Min, Hwang, Eunhee, Kim, Doyoung, Lee, Hyoyoung
Format: Article
Language:English
Subjects:
639/301/119/998
639/925/918/1052
Benzene
Graphite - chemistry
Humanities and Social Sciences
Humans
multidisciplinary
Nanotubes, Carbon - chemistry
Nerve agents
Nerve Agents - isolation & purification
Nerve Agents - toxicity
Porosity
Pyrazines - isolation & purification
Pyrazines - toxicity
Sarin
Science
Sensors
Silica
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Summary:A novel gas sensor consisting of porous, non-stacked reduced graphene oxide (NSrGO)-heaxfluorohydoroxypropanyl benzene (HFHPB) nanosheets was successfully fabricated, allowing the detection of dimethyl methyl phosphonate (DMMP), similar to sarin toxic gas. The HFHPB group was chemically grafted to the NSrGO via a diazotization reaction to produce NSrGO-HFHPB. The NSrGO-HFHPB 3D film has a mesoporous structure with a large pore volume and high surface area that can sensitively detect DMMP and concurrently selectively signal the DMMP through the chemically-attached HFHPB. The DMMP uptake of the mesoporous NSrGO-HFHPB was 240.03 Hz, 12 times greater than that of rGO-HFHPB (20.14 Hz). In addition, the response rate of NSrGO-HFHPB was faster than that of rGO-HFHPB, an approximately 3 times more rapid recovery due to the mesoporous structure of the NSrGO-HFHPB. The NSrGO-HFHPB sensor exhibited long-term stability due to the use of robust carbon and resulting high resistance to humidity.
ISSN:2045-2322
2045-2322
DOI:10.1038/srep33299