Universidade Federal de São Carlos
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
Dear Subanta Majumdar
By read the following article you can understand the reason behind that
Regards
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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.
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?
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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,
Similar questions and discussions
What is the perfect solvent for synthesizing MOFs? TEA, THF, or DMF?
- Rizqa Dianti Zahra
I am synthesizing MOF with alkaline earth metal (AEMOFs), using alkaline earth based on carbonate with organic linker BDC (terephthalic acid) with solvent water and DMF. After the synthesis, I characterize it with a surface area analyzer or BET, and showed that the surface area is small (<20 m2/g). The application AEMOFs is for catalyst, but the result of the reaction is really worse, it's like there is no reaction on the catalyst.
After a while, I found this journal that said, it could be the MOFs defect because of DMF, and recommended using THF but my lecturer recommends using TEA. So which one should I use THF or TMA? and why? what is the difference with DMF?
Journal that I mean: https://doi.org/10.1038/s41467-023-38155-8
Thank you in advance
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