Hassan Awada

6 Questions 10 Answers 0 Followers

Questions related from Hassan Awada

Is it possible for Graphene Sheets to have low surface area (around 78 m2/g)?

Hi, I am exfoliating graphite through high shear mixing in order to produce Graphene sheets. Is it possible for Graphene Sheets to have low surface area (around 78 m2/g)? Note that I measured the...

28 August 2019 4,248 3 View

Should I wash Graphite flakes, 99% carbon basis, -325 mesh particle size (≥99%), natural with solvent before any lab experiment?

Hello, I bought Graphite flakes, 99% carbon basis, -325 mesh particle size (≥99%), natural. I want to do shear mixing exfoliation via water and pluronic with graphite. My question is: should i...

21 February 2019 503 4 View

Strange TGA result for exfoliated graphite?

Hi, I have exfoliated a mixture of graphite, pluronic f127, and water via Silverson shear mixer and after that I wanted to characterize the results via TGA. I want to show that after hours of...

12 February 2019 7,755 3 View

Graphite/surfactant weight ratio in order to improve shear exfoliation of graphene

Hello, I would really appreciate any kind advice or suggestion. I’m shear exfoliating graphite to graphene via pluronic f127 and water. The total mixture is 180 ml of water. Surfactant used is...

01 January 1970 4,435 3 View

After vacuum filtration, sample is still wet, should I put it in vacuum oven?

Hi, I'm exfoliating Graphite into Graphene via Silverson Shear Mixer using water and Pluronic F127. After centrifugation and filtrating the product via Sterlitech nylon membrane (0.2 micrometer),...

01 January 1970 4,609 2 View

How to remove Surfactant (Pluronic F127) from exfoliated graphite? Should I wash with DI water and filter it using nylon membrane?

Hi, I want to ask about the process of removing the Surfactant (Pluronic F127) from exfoliated graphite before characterizing it via TGA? Should I wash with DI water couple of times and then...

01 January 1970 3,039 5 View