Details

Autor(en) / Beteiligte

• Kim, Jinseon
• Kwon, Sanghyuk
• Cho, Dae-Hyun
• Kang, Byunggil
• Kwon, Hyukjoon
• Kim, Youngchan
• Park, Sung O
• Jung, Gwan Yeong
• Shin, Eunhye
• Kim, Wan-Gu
• Lee, Hyungdong
• Ryu, Gyeong Hee
• Choi, Minseok
• Kim, Tae Hyeong
• Oh, Junghoon
• Park, Sungjin
• Kwak, Sang Kyu
• Yoon, Suk Wang
• Byun, Doyoung
• Lee, Zonghoon
• Lee, Changgu

Titel

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

Ist Teil von

• Nature communications, 2015-09, Vol.6 (1), p.8294-8294, Article 8294

Ort / Verlag

England: Nature Publishing Group

Erscheinungsjahr

2015

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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.