Abstract
The production of colloidal suspensions of graphene-based nano-platelets in large scale is highly important for their use in practical applications. In this work, we developed a new route for generation of colloidal suspensions of N-modified graphene-based nano-platelets (A-rG-O) with high concentration in water or organic solvent/water mixed systems by the reaction between graphene oxide and ammonium hydroxide. Graphene oxide was reduced by the ammonium hydroxide and N atoms (up to 6 at%) were introduced into A-rG-O materials using solution process without further thermal treatment. Such A-rG-O nano-platelets were well dispersed as individual layers in both systems. Macroscopic free-standing A-rG-O paper materials with good electrical conductivity were produced by filtration of such colloidal suspensions.
| Original language | English |
|---|---|
| Pages (from-to) | 1-4 |
| Number of pages | 4 |
| Journal | Solid State Sciences |
| Volume | 27 |
| DOIs | |
| State | Published - 2014 |
Bibliographical note
Funding Information:This work was supported by the Inha University , the Grants from the Center for Advanced Soft Electronics (Code No. 2011-0031629) under the Global Frontier Research Program of the Ministry of Education, Science and Technology, Korea , and the International Cooperation of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea Government Ministry of Knowledge Economy . (No. 20128510010050 ).
Keywords
- Ammonia
- Colloidal suspensions
- N-Doping
- Paper materials
- Reduced graphene oxide