3 years ago

Kinetically Controlled Layer-by-Layer Stacking of Metal Oxide 2D Nanosheets

Kinetically Controlled Layer-by-Layer Stacking of Metal Oxide 2D Nanosheets
Yun Kyung Jo, Seul Lee, Joohyun Lim, Xiaoyan Jin, Seong-Ju Hwang
An efficient chemical way to finely control the layer-by-layer stacking of inorganic nanosheets (NS) is developed by tuning the type and composition of intercalant ion, and the reaction temperature for restacking process. The finely controlled stacking of NS relies on a kinetic control of the self-assembly of NS in the presence of coordinating organic cations. A critical role of organic cations in this assembly highlights the importance of the appropriate activation energy. Of prime importance is that a fine-control of the interstratification of 2D NS is highly effective not only in tailoring its pore structure but also in enhancing its electrode activity. The present study clearly demonstrates that the kinetically controlled restacking of NS provides a facile and powerful method to tailor their stacking number and functionality. How it stacks up: A facile chemical method to tailor the interstratification structure of inorganic nanosheets was developed by controlling the reaction kinetics of the process. The tuning of the type and composition of intercalant ion, and the reaction temperature, is highly effective not only in tailoring the surface area and pore structure, but also in enhancing the properties of nanosheets.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/anie.201701738

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