Abstract
Doping with heteroatoms is a well-established method to tune the electronic properties and surface chemistry of graphene. Herein, we demonstrate the synthesis of a fluorine-doped reduced graphene oxide (FrGO) at low temperatures that offers multiple opportunities in applied fields. The as-synthesized FrGO product shows a better electrical conductivity of 750 S m-1 than that of undoped rGO with an electrical conductivity of 195 S m-1. To demonstrate the multifunctional applications of the as-synthesized FrGO, it was examined for electromagnetic interference shielding and electrochemical sensing of histamine as an important food biomarker. A laminate of FrGO delivered an EMI shielding effectiveness value of 22 dB in Ku band as compared with 11.2 dB for an rGO laminate with similar thickness. On the other hand, an FrGO modified sensor offered an excellent sensitivity (∼7 nM), wide detection range, and good selectivity in the presence of similar biomarkers. This performance originates from the better catalytic ability of FrGO as compared with rGO, where fluorine atoms play the role of catalytic active sites owing to their high electronegativity. The fluorination reaction also helps to improve the reduction degree of the chemically synthesized graphene, consequently enhancing the electrical conductivity, which is a prime requirement for increasing the electromagnetic and electrochemical properties of graphene.
| Original language | English |
|---|---|
| Pages (from-to) | 24179-24189 |
| Number of pages | 11 |
| Journal | ACS Applied Materials and Interfaces |
| Volume | 9 |
| Issue number | 28 |
| DOIs | |
| Publication status | Published - 2017 Jul 19 |
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Keywords
- biosensor
- electromagnetic interference shielding
- fluorine doping
- graphene
- histamine
ASJC Scopus subject areas
- Materials Science(all)
Cite this
Synthesis of Multifunctional Electrically Tunable Fluorine-Doped Reduced Graphene Oxide at Low Temperatures. / Shahzad, Faisal; Zaidi, Shabi Abbas; Koo, Chong Min.
In: ACS Applied Materials and Interfaces, Vol. 9, No. 28, 19.07.2017, p. 24179-24189.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Synthesis of Multifunctional Electrically Tunable Fluorine-Doped Reduced Graphene Oxide at Low Temperatures
AU - Shahzad, Faisal
AU - Zaidi, Shabi Abbas
AU - Koo, Chong Min
PY - 2017/7/19
Y1 - 2017/7/19
N2 - Doping with heteroatoms is a well-established method to tune the electronic properties and surface chemistry of graphene. Herein, we demonstrate the synthesis of a fluorine-doped reduced graphene oxide (FrGO) at low temperatures that offers multiple opportunities in applied fields. The as-synthesized FrGO product shows a better electrical conductivity of 750 S m-1 than that of undoped rGO with an electrical conductivity of 195 S m-1. To demonstrate the multifunctional applications of the as-synthesized FrGO, it was examined for electromagnetic interference shielding and electrochemical sensing of histamine as an important food biomarker. A laminate of FrGO delivered an EMI shielding effectiveness value of 22 dB in Ku band as compared with 11.2 dB for an rGO laminate with similar thickness. On the other hand, an FrGO modified sensor offered an excellent sensitivity (∼7 nM), wide detection range, and good selectivity in the presence of similar biomarkers. This performance originates from the better catalytic ability of FrGO as compared with rGO, where fluorine atoms play the role of catalytic active sites owing to their high electronegativity. The fluorination reaction also helps to improve the reduction degree of the chemically synthesized graphene, consequently enhancing the electrical conductivity, which is a prime requirement for increasing the electromagnetic and electrochemical properties of graphene.
AB - Doping with heteroatoms is a well-established method to tune the electronic properties and surface chemistry of graphene. Herein, we demonstrate the synthesis of a fluorine-doped reduced graphene oxide (FrGO) at low temperatures that offers multiple opportunities in applied fields. The as-synthesized FrGO product shows a better electrical conductivity of 750 S m-1 than that of undoped rGO with an electrical conductivity of 195 S m-1. To demonstrate the multifunctional applications of the as-synthesized FrGO, it was examined for electromagnetic interference shielding and electrochemical sensing of histamine as an important food biomarker. A laminate of FrGO delivered an EMI shielding effectiveness value of 22 dB in Ku band as compared with 11.2 dB for an rGO laminate with similar thickness. On the other hand, an FrGO modified sensor offered an excellent sensitivity (∼7 nM), wide detection range, and good selectivity in the presence of similar biomarkers. This performance originates from the better catalytic ability of FrGO as compared with rGO, where fluorine atoms play the role of catalytic active sites owing to their high electronegativity. The fluorination reaction also helps to improve the reduction degree of the chemically synthesized graphene, consequently enhancing the electrical conductivity, which is a prime requirement for increasing the electromagnetic and electrochemical properties of graphene.
KW - biosensor
KW - electromagnetic interference shielding
KW - fluorine doping
KW - graphene
KW - histamine
UR - http://www.scopus.com/inward/record.url?scp=85024874545&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85024874545&partnerID=8YFLogxK
U2 - 10.1021/acsami.7b05021
DO - 10.1021/acsami.7b05021
M3 - Article
C2 - 28654230
AN - SCOPUS:85024874545
VL - 9
SP - 24179
EP - 24189
JO - ACS applied materials & interfaces
JF - ACS applied materials & interfaces
SN - 1944-8244
IS - 28
ER -