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 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.
Centre for Integrated Nanostructure Physics (CINAP), Institute of Basic Science (IBS), Department of Energy Science, Sungkyunkwan University, Suwon 440-746, Korea.
Hee Min
HM
Hwang
Centre for Integrated Nanostructure Physics (CINAP), Institute of Basic Science (IBS), Department of Chemistry, Sungkyunkwan University, Suwon 440-746, Korea.
Eunhee
E
Hwang
Centre for Integrated Nanostructure Physics (CINAP), Institute of Basic Science (IBS), Department of Energy Science, Sungkyunkwan University, Suwon 440-746, Korea.
Doyoung
D
Kim
Centre for Integrated Nanostructure Physics (CINAP), Institute of Basic Science (IBS), Department of Energy Science, Sungkyunkwan University, Suwon 440-746, Korea.|Centre for Integrated Nanostructure Physics (CINAP), Institute of Basic Science (IBS), Department of Chemistry, Sungkyunkwan University, Suwon 440-746, Korea.
Hyoyoung
H
Lee
D006108:Graphite / Q000737:chemistry*; D006801:Humans; D037742:Nanotubes, Carbon / Q000737:chemistry; D000067397:Nerve Agents / Q000302:isolation & purification* / Q000633:toxicity; D016062:Porosity; D011719:Pyrazines / Q000302:isolation & purification* / Q000633:toxicity
C000602527:2,5-dimethyl-3-methoxypyrazine; D037742:Nanotubes, Carbon; D000067397:Nerve Agents; D011719:Pyrazines; D006108:Graphite