Swift heavy-ion irradiation of graphene oxide: Localized reduction and formation of sp-hybridized carbon chains

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Swift heavy-ion irradiation of graphene oxide: Localized reduction and formation of sp-hybridized carbon chains. / Olejniczak, Andrzej; Nebogatikova, Nadezhda A.; Frolov, Aleksei V. et al.

In: Carbon, Vol. 141, 01.01.2019, p. 390-399.

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

BibTeX

@article{b6ce07241f514e34a1f29cd8d26d5004,

title = "Swift heavy-ion irradiation of graphene oxide: Localized reduction and formation of sp-hybridized carbon chains",

abstract = "Herein, we report the fabrication of nanometer-sized reduced graphene oxide (rGO) spots by swift heavy-ion (SHI) bombardment. Such structures can be considered graphene quantum dots (QDs) embedded in a non-conducting matrix. Both the number density and the diameter of the rGO spots can be tailored by a suitable choice of irradiation parameters (i.e., ion type, fluence, and energy). The degree of graphene oxide defunctionalization by SHIs with different energies scaled well with the deposited electronic energy density. The resistance of the samples decreased nonlinearly with increasing ion dose and, at fluences above 1013 ions/cm2, was orders of magnitude lower than the initial value. An increase in the electronic stopping power of the ion resulted (i) in suppression of the structural ordering at low fluences and (ii) in increased amorphization efficiency and formation of sp-hybridized carbon chains of both polyynes and polycumulenes at high fluences. A hypothesis suggesting that the sp-C chains are bridges joining opposite sides of nanoholes created inside the track core and thus assuming the formation of a coupled QD-antidot system is presented. These phenomena were found to be absent in comparative experiments with 200 keV Xe ion irradiation, i.e., in the nuclear stopping regime.",

keywords = "GAMMA-RAY IRRADIATION, GRAPHITE-ELECTRODES, RAMAN-SPECTRA, ENERGY, FILMS, DEOXYGENATION, PERFORMANCE, STABILITY, CHEMISTRY, TRANSPORT",

author = "Andrzej Olejniczak and Nebogatikova, {Nadezhda A.} and Frolov, {Aleksei V.} and Miroslaw Kulik and Antonova, {Irina V.} and Skuratov, {Vladimir A.}",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2019",

month = jan,

day = "1",

doi = "10.1016/j.carbon.2018.09.042",

language = "English",

volume = "141",

pages = "390--399",

journal = "Carbon",

issn = "0008-6223",

publisher = "Elsevier Ltd",

}

RIS

TY - JOUR

T1 - Swift heavy-ion irradiation of graphene oxide: Localized reduction and formation of sp-hybridized carbon chains

AU - Olejniczak, Andrzej

AU - Nebogatikova, Nadezhda A.

AU - Frolov, Aleksei V.

AU - Kulik, Miroslaw

AU - Antonova, Irina V.

AU - Skuratov, Vladimir A.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Herein, we report the fabrication of nanometer-sized reduced graphene oxide (rGO) spots by swift heavy-ion (SHI) bombardment. Such structures can be considered graphene quantum dots (QDs) embedded in a non-conducting matrix. Both the number density and the diameter of the rGO spots can be tailored by a suitable choice of irradiation parameters (i.e., ion type, fluence, and energy). The degree of graphene oxide defunctionalization by SHIs with different energies scaled well with the deposited electronic energy density. The resistance of the samples decreased nonlinearly with increasing ion dose and, at fluences above 1013 ions/cm2, was orders of magnitude lower than the initial value. An increase in the electronic stopping power of the ion resulted (i) in suppression of the structural ordering at low fluences and (ii) in increased amorphization efficiency and formation of sp-hybridized carbon chains of both polyynes and polycumulenes at high fluences. A hypothesis suggesting that the sp-C chains are bridges joining opposite sides of nanoholes created inside the track core and thus assuming the formation of a coupled QD-antidot system is presented. These phenomena were found to be absent in comparative experiments with 200 keV Xe ion irradiation, i.e., in the nuclear stopping regime.

AB - Herein, we report the fabrication of nanometer-sized reduced graphene oxide (rGO) spots by swift heavy-ion (SHI) bombardment. Such structures can be considered graphene quantum dots (QDs) embedded in a non-conducting matrix. Both the number density and the diameter of the rGO spots can be tailored by a suitable choice of irradiation parameters (i.e., ion type, fluence, and energy). The degree of graphene oxide defunctionalization by SHIs with different energies scaled well with the deposited electronic energy density. The resistance of the samples decreased nonlinearly with increasing ion dose and, at fluences above 1013 ions/cm2, was orders of magnitude lower than the initial value. An increase in the electronic stopping power of the ion resulted (i) in suppression of the structural ordering at low fluences and (ii) in increased amorphization efficiency and formation of sp-hybridized carbon chains of both polyynes and polycumulenes at high fluences. A hypothesis suggesting that the sp-C chains are bridges joining opposite sides of nanoholes created inside the track core and thus assuming the formation of a coupled QD-antidot system is presented. These phenomena were found to be absent in comparative experiments with 200 keV Xe ion irradiation, i.e., in the nuclear stopping regime.

KW - GAMMA-RAY IRRADIATION

KW - GRAPHITE-ELECTRODES

KW - RAMAN-SPECTRA

KW - ENERGY

KW - FILMS

KW - DEOXYGENATION

KW - PERFORMANCE

KW - STABILITY

KW - CHEMISTRY

KW - TRANSPORT

UR - http://www.scopus.com/inward/record.url?scp=85054340688&partnerID=8YFLogxK

U2 - 10.1016/j.carbon.2018.09.042

DO - 10.1016/j.carbon.2018.09.042

M3 - Article

AN - SCOPUS:85054340688

VL - 141

SP - 390

EP - 399

JO - Carbon

JF - Carbon

SN - 0008-6223

ER -

ID: 17035883