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Direct exfoliation and dispersion of two-dimensional materials in pure water via temperature control.
Nature Communications ( IF 14.7 ) Pub Date : 2015-Sep-15 , DOI: 10.1038/ncomms9294
Jinseon Kim , Sanghyuk Kwon , Dae-Hyun Cho , Byunggil Kang , Hyukjoon Kwon , Youngchan Kim , Sung O. Park , Gwan Yeong Jung , Eunhye Shin , Wan-Gu Kim , Hyungdong Lee , Gyeong Hee Ryu , Minseok Choi , Tae Hyeong Kim , Junghoon Oh , Sungjin Park , Sang Kyu Kwak , Suk Wang Yoon , Doyoung Byun , Zonghoon Lee , Changgu Lee
Nature Communications ( IF 14.7 ) Pub Date : 2015-Sep-15 , DOI: 10.1038/ncomms9294
Jinseon Kim , Sanghyuk Kwon , Dae-Hyun Cho , Byunggil Kang , Hyukjoon Kwon , Youngchan Kim , Sung O. Park , Gwan Yeong Jung , Eunhye Shin , Wan-Gu Kim , Hyungdong Lee , Gyeong Hee Ryu , Minseok Choi , Tae Hyeong Kim , Junghoon Oh , Sungjin Park , Sang Kyu Kwak , Suk Wang Yoon , Doyoung Byun , Zonghoon Lee , Changgu Lee
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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.
中文翻译:
通过温度控制将二维材料直接剥离并分散在纯水中。
血小板形式的二维(2D)材料的大量合成对于各种应用而言是理想的。尽管水被认为是理想的分散介质,但由于其含量丰富且成本低廉,血小板表面的疏水性已使其无法广泛使用。在这里,我们不使用任何化学药品或表面活性剂直接在纯净水中剥离2D材料。为了使材料剥落并分散在水中,我们提高了超声浴的温度,并通过声波的消散引入能量。通过维持高温以及原子和分子水平的模拟,可以实现超过一个月的存储稳定性,我们进一步发现,由于边缘官能化或固有极性导致血小板表面电荷的存在,因此在水中保持了良好的溶解性。最后,我们展示了在硬质和柔性基材上的喷墨打印,作为水分散二维材料的潜在应用。
更新日期:2015-09-18
中文翻译:
![](https://scdn.x-mol.com/jcss/images/paperTranslation.png)
通过温度控制将二维材料直接剥离并分散在纯水中。
血小板形式的二维(2D)材料的大量合成对于各种应用而言是理想的。尽管水被认为是理想的分散介质,但由于其含量丰富且成本低廉,血小板表面的疏水性已使其无法广泛使用。在这里,我们不使用任何化学药品或表面活性剂直接在纯净水中剥离2D材料。为了使材料剥落并分散在水中,我们提高了超声浴的温度,并通过声波的消散引入能量。通过维持高温以及原子和分子水平的模拟,可以实现超过一个月的存储稳定性,我们进一步发现,由于边缘官能化或固有极性导致血小板表面电荷的存在,因此在水中保持了良好的溶解性。最后,我们展示了在硬质和柔性基材上的喷墨打印,作为水分散二维材料的潜在应用。