Biomass-Derived Thermally Annealed Interconnected Sulfur-Doped Graphene as a Shield against Electromagnetic Interference

Faisal Shahzad; Pradip Kumar; Yoon Hyun Kim; Soon Man Hong; Chong Min Koo

doi:10.1021/acsami.6b00418

Biomass-Derived Thermally Annealed Interconnected Sulfur-Doped Graphene as a Shield against Electromagnetic Interference

Faisal Shahzad, Pradip Kumar, Yoon Hyun Kim, Soon Man Hong, Chong Min Koo

Research output: Contribution to journal › Article › peer-review

79 Citations (Scopus)

Abstract

Electrically conductive thin carbon materials have attracted remarkable interest as a shielding material to mitigate the electromagnetic interference (EMI) produced by many telecommunication devices. Herein, we developed a sulfur-doped reduced graphene oxide (SrGO) with high electrical conductivity through using a novel biomass, mushroom-based sulfur compound (lenthionine) via a two-step thermal treatment. The resultant SrGO product exhibited excellent electrical conductivity of 311 S cm^-1, which is 52% larger than 205 S cm^-1 for undoped rGO. SrGO also exhibited an excellent EMI shielding effectiveness of 38.6 dB, which is 61% larger than 24.4 dB measured for undoped rGO. Analytical examinations indicate that a sulfur content of 1.95 atom % acts as n-type dopant, increasing electrical conductivity and, therefore, EMI shielding of doped graphene.

Original language	English
Pages (from-to)	9361-9369
Number of pages	9
Journal	ACS Applied Materials and Interfaces
Volume	8
Issue number	14
DOIs	https://doi.org/10.1021/acsami.6b00418
Publication status	Published - 2016 Apr 27
Externally published	Yes

Keywords

biomass
electrical conductivity
electromagnetic interference shielding
graphene
sulfur doping

ASJC Scopus subject areas

Materials Science(all)

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10.1021/acsami.6b00418

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title = "Biomass-Derived Thermally Annealed Interconnected Sulfur-Doped Graphene as a Shield against Electromagnetic Interference",

abstract = "Electrically conductive thin carbon materials have attracted remarkable interest as a shielding material to mitigate the electromagnetic interference (EMI) produced by many telecommunication devices. Herein, we developed a sulfur-doped reduced graphene oxide (SrGO) with high electrical conductivity through using a novel biomass, mushroom-based sulfur compound (lenthionine) via a two-step thermal treatment. The resultant SrGO product exhibited excellent electrical conductivity of 311 S cm-1, which is 52% larger than 205 S cm-1 for undoped rGO. SrGO also exhibited an excellent EMI shielding effectiveness of 38.6 dB, which is 61% larger than 24.4 dB measured for undoped rGO. Analytical examinations indicate that a sulfur content of 1.95 atom % acts as n-type dopant, increasing electrical conductivity and, therefore, EMI shielding of doped graphene.",

keywords = "biomass, electrical conductivity, electromagnetic interference shielding, graphene, sulfur doping",

author = "Faisal Shahzad and Pradip Kumar and Kim, {Yoon Hyun} and Hong, {Soon Man} and Koo, {Chong Min}",

note = "Funding Information: This work was supported by the Graphene Part and Material Development Program, Fundamental R&D Program for Core Technology of Materials and the Industrial Strategic Technology Development Program funded by the Ministry of Trade, Industry and Energy, Republic of Korea, and partially by Korea Institute of Science and Technology. Publisher Copyright: {\textcopyright} 2016 American Chemical Society.",

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AU - Kumar, Pradip

AU - Kim, Yoon Hyun

AU - Hong, Soon Man

AU - Koo, Chong Min

N1 - Funding Information: This work was supported by the Graphene Part and Material Development Program, Fundamental R&D Program for Core Technology of Materials and the Industrial Strategic Technology Development Program funded by the Ministry of Trade, Industry and Energy, Republic of Korea, and partially by Korea Institute of Science and Technology. Publisher Copyright: © 2016 American Chemical Society.

PY - 2016/4/27

Y1 - 2016/4/27

N2 - Electrically conductive thin carbon materials have attracted remarkable interest as a shielding material to mitigate the electromagnetic interference (EMI) produced by many telecommunication devices. Herein, we developed a sulfur-doped reduced graphene oxide (SrGO) with high electrical conductivity through using a novel biomass, mushroom-based sulfur compound (lenthionine) via a two-step thermal treatment. The resultant SrGO product exhibited excellent electrical conductivity of 311 S cm-1, which is 52% larger than 205 S cm-1 for undoped rGO. SrGO also exhibited an excellent EMI shielding effectiveness of 38.6 dB, which is 61% larger than 24.4 dB measured for undoped rGO. Analytical examinations indicate that a sulfur content of 1.95 atom % acts as n-type dopant, increasing electrical conductivity and, therefore, EMI shielding of doped graphene.

AB - Electrically conductive thin carbon materials have attracted remarkable interest as a shielding material to mitigate the electromagnetic interference (EMI) produced by many telecommunication devices. Herein, we developed a sulfur-doped reduced graphene oxide (SrGO) with high electrical conductivity through using a novel biomass, mushroom-based sulfur compound (lenthionine) via a two-step thermal treatment. The resultant SrGO product exhibited excellent electrical conductivity of 311 S cm-1, which is 52% larger than 205 S cm-1 for undoped rGO. SrGO also exhibited an excellent EMI shielding effectiveness of 38.6 dB, which is 61% larger than 24.4 dB measured for undoped rGO. Analytical examinations indicate that a sulfur content of 1.95 atom % acts as n-type dopant, increasing electrical conductivity and, therefore, EMI shielding of doped graphene.

KW - biomass

KW - electrical conductivity

KW - electromagnetic interference shielding

KW - graphene

KW - sulfur doping

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SN - 1944-8244

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ER -

Biomass-Derived Thermally Annealed Interconnected Sulfur-Doped Graphene as a Shield against Electromagnetic Interference

Abstract

Keywords

ASJC Scopus subject areas

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