Fabrication of reduced graphene oxide with high electrical conductivity by thermal-assisted photoreduction of electrochemically-exfoliated graphene oxide

被引：4

作者：

Hirotomi, Yuji ^{[1
]}

Kubota, Wataru ^{[1
]}

Utsunomiya, Toru ^{[1
]}

Ichii, Takashi ^{[1
]}

Sugimura, Hiroyuki ^{[1
]}

机构：

[1] Kyoto Univ, Grad Sch Engn, Dept Mat Sci & Engn, Sakyo Ku, Kyoto 6068501, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2022年 / 61卷 / SL期

关键词：

conductive atomic force microscopy; photoreduction; thermal reduction; electrochemical exfoliation; graphene oxide; MASS-PRODUCTION; GRAPHITE OXIDE; HIGH-QUALITY; NANOSHEETS; REDUCTION; TRANSPARENT; IRRADIATION; EVOLUTION; OXIDATION; DEFECTS;

D O I：

10.35848/1347-4065/ac66c0

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Electrochemical exfoliation of graphite is a method for synthesizing graphene oxide (GO) with fewer structural defects than GO synthesized by conventional chemical oxidation. Photoreduction of GO has been focused on due to their facile procedures, and environmental friendliness. In this report, electrochemically-exfoliated graphene oxide (EGO) was irradiated by vacuum ultraviolet (VUV) light at 140 degrees C under a high vacuum environment, named thermal-assisted VUV light treatment. Conductive atomic force microscopy was used to investigate the electrical characteristics of individual sheets on the nanometer scale. The electrical conductivity of the treated sheet (1.4 x 10(5 )S m(-1)) was higher than the pristine EGO by an order of magnitude. The chemical and structural analysis showed that the EGO was reduced and their pi-conjugated domains were restored through a hybrid of photochemical and thermal treatment. These results indicate that our hybrid approach has the potential for reducing the EGO.

引用

页数：6

共 41 条

[1] Electrochemical exfoliation of graphite in quaternary ammonium-based deep eutectic solvents: a route for the mass production of graphane [J].

Abdelkader, Amr M. ;

Patten, Hollie V. ;

Li, Zheling ;

Chen, Yiqiang ;

Kinloch, Ian A. .

NANOSCALE, 2015, 7 (26) :11386-11392

[2] Honeycomb Carbon: A Review of Graphene [J].

Allen, Matthew J. ;

Tung, Vincent C. ;

Kaner, Richard B. .

CHEMICAL REVIEWS, 2010, 110 (01) :132-145

[3] Electrochemically Exfoliated Graphene and Graphene Oxide for Energy Storage and Electrochemistry Applications [J].

Ambrosi, Adriano ;

Pumera, Martin .

CHEMISTRY-A EUROPEAN JOURNAL, 2016, 22 (01) :153-159

[4] Functional Composite Materials Based on Chemically Converted Graphene [J].

Bai, Hua ;

Li, Chun ;

Shi, Gaoquan .

ADVANCED MATERIALS, 2011, 23 (09) :1089-1115

[5] Ultrathin epitaxial graphite: 2D electron gas properties and a route toward graphene-based nanoelectronics [J].

Berger, C ;

Song, ZM ;

Li, TB ;

Li, XB ;

Ogbazghi, AY ;

Feng, R ;

Dai, ZT ;

Marchenkov, AN ;

Conrad, EH ;

First, PN ;

de Heer, WA .

JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (52) :19912-19916

[6] Electronic confinement and coherence in patterned epitaxial graphene [J].

Berger, Claire ;

Song, Zhimin ;

Li, Xuebin ;

Wu, Xiaosong ;

Brown, Nate ;

Naud, Cecile ;

Mayou, Didier ;

Li, Tianbo ;

Hass, Joanna ;

Marchenkov, Atexei N. ;

Conrad, Edward H. ;

First, Phillip N. ;

de Heer, Wait A. .

SCIENCE, 2006, 312 (5777) :1191-1196

[7] Quantifying Defects in Graphene via Raman Spectroscopy at Different Excitation Energies [J].

Cancado, L. G. ;

Jorio, A. ;

Martins Ferreira, E. H. ;

Stavale, F. ;

Achete, C. A. ;

Capaz, R. B. ;

Moutinho, M. V. O. ;

Lombardo, A. ;

Kulmala, T. S. ;

Ferrari, A. C. .

NANO LETTERS, 2011, 11 (08) :3190-3196

[8] Two-Step Electrochemical Intercalation and Oxidation of Graphite for the Mass Production of Graphene Oxide [J].

Cao, Jianyun ;

He, Pei ;

Mohammed, Mahdi A. ;

Zhao, Xin ;

Young, Robert J. ;

Derby, Brian ;

Kinloch, Ian A. ;

Dryfe, Robert A. W. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2017, 139 (48) :17446-17456

[9] Preparation of graphene by the rapid and mild thermal reduction of graphene oxide induced by microwaves [J].

Chen, Wufeng ;

Yan, Lifeng ;

Bangal, Prakriti R. .

CARBON, 2010, 48 (04) :1146-1152

[10] Towards high quality CVD graphene growth and transfer [J].

Deokar, G. ;

Avila, J. ;

Razado-Colambo, I. ;

Codron, J. -L. ;

Boyaval, C. ;

Galopin, E. ;

Asensio, M. -C. ;

Vignaud, D. .

CARBON, 2015, 89 :82-92

← 1 2 3 4 5 →