Question
Asked 25th Feb, 2015

Why are temperatures between 95 and 100 degrees centigrade optimum for reduced graphene oxide synthesis by Hydrazine from Grephene oxide?

In most papers 95 to 100 degree centigrade is used to synthesize RGO. Why arent temperatures above 100 degree like 150,200,250 used to synthesize graphene?

Most recent answer

M. S. Alkathy
Universidade Federal de São Carlos
Dear Subanta Majumdar
By read the following article you can understand the reason behind that
Regards
1 Recommendation

All Answers (5)

Since the boiling temperature of water is 100 C, they cannot go beyond 100 C in reflux. If you do hydrothermal, then you can increase the temperature. 
*Hydrazine hydrate is in solution form.
Subanta Majumdar
Indian Institute of Technology Kanpur
Your point is already clear to me. But what if I take large volume of water and do direct heating 120 degree centigrade (no refluxing) and do the raection for 3 hours and add hydrazine hydrate in small small amount in 20 min interval. Is it possible then?
1 Recommendation
I think it is possible. You will achieve a rGO with certain degree of reduction in  the end
Amal Abdelhaleem
Egypt-Japan University of Science and Technology
Dear Subanta Majumdar
What do you mean by adding hydrazine hydrate in small small amount in 20 min interval. Do you mean adding 1 ml hydrazine each 20 min or what, please can you help me??
Regards,
M. S. Alkathy
Universidade Federal de São Carlos
Dear Subanta Majumdar
By read the following article you can understand the reason behind that
Regards
1 Recommendation

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