کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1504503 | 1510995 | 2014 | 4 صفحه PDF | دانلود رایگان |
• Ammonium hydroxide reduced graphene oxide.
• Colloidal suspensions of N-modified graphene nano-platelets were produced.
• Macroscopic paper materials showed good electrical conductivity.
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.
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Journal: Solid State Sciences - Volume 27, January 2014, Pages 1–4