Direct exfoliation and dispersion of two-dimensional materials in pure water via temperature control

被引：273

作者：

Kim, Jinseon ^{[1
]}

Kwon, Sanghyuk ^{[2
]}

Cho, Dae-Hyun ^{[3
]}

Kang, Byunggil ^{[4
]}

Kwon, Hyukjoon ^{[4
]}

Kim, Youngchan ^{[4
]}

Park, Sung O. ^{[5
]}

Jung, Gwan Yeong ^{[5
]}

Shin, Eunhye ^{[5
]}

Kim, Wan-Gu ^{[6
]}

Lee, Hyungdong ^{[2
]}

Ryu, Gyeong Hee ^{[7
]}

Choi, Minseok ^{[8
]}

Kim, Tae Hyeong ^{[8
]}

Oh, Junghoon ^{[9
]}

Park, Sungjin ^{[9
]}

Kwak, Sang Kyu ^{[5
]}

Yoon, Suk Wang ^{[6
]}

Byun, Doyoung ^{[2
]}

Lee, Zonghoon ^{[7
]}

Lee, Changgu ^{[2
,4
]}

机构：

[1] Korea Elect Power Corp Nucl Fuel, Mech Test & Anal Sect, Daejeon 305353, South Korea

[2] Sungkyunkwan Univ, Sch Mech Engn, Suwon 440746, South Korea

[3] Ohio State Univ, Dept Mech Engn, Columbus, OH 43210 USA

[4] Sungkyunkwan Univ, SKKU Adv Inst Nanotechnol, Suwon 440746, South Korea

[5] Ulsan Natl Inst Sci & Technol, Sch Energy & Chem Engn, Ulsan 689798, South Korea

[6] Sungkyunkwan Univ, Dept Phys, Suwon 440746, South Korea

[7] Ulsan Natl Inst Sci & Technol, Sch Mat Sci & Engn, Ulsan 689798, South Korea

[8] LG Elect Adv Res Inst, Future Device R&D Dept, New Mat Team, Seoul 137724, South Korea

[9] Inha Univ, Dept Chem & Chem Engn, Inchon 402751, South Korea

来源：

NATURE COMMUNICATIONS | 2015年 / 6卷

基金：

新加坡国家研究基金会;

关键词：

LIQUID-PHASE EXFOLIATION; GRAPHENE FILMS; MOS2; PHOTOLUMINESCENCE; LAYERS;

D O I：

10.1038/ncomms9294

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The high-volume synthesis of two-dimensional (2D) materials in the form of platelets is desirable for various applications. While water is considered an ideal dispersion medium, due to its abundance and low cost, the hydrophobicity of platelet surfaces has prohibited its widespread use. Here we exfoliate 2D materials directly in pure water without using any chemicals or surfactants. In order to exfoliate and disperse the materials in water, we elevate the temperature of the sonication bath, and introduce energy via the dissipation of sonic waves. Storage stability greater than one month is achieved through the maintenance of high temperatures, and through atomic and molecular level simulations, we further discover that good solubility in water is maintained due to the presence of platelet surface charges as a result of edge functionalization or intrinsic polarity. Finally, we demonstrate inkjet printing on hard and flexible substrates as a potential application of water-dispersed 2D materials.

引用

页数：9

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