Zahra Gohari Bajestani

6 Questions 23 Answers 0 Followers

Questions related from Zahra Gohari Bajestani

How we can measure the density of graphene?

I use the Hummers method to oxidize the graphite and by using thermal reduction I found powder like graphene. I need to find the density of graphene. Does anyone know how we can measure the...

05 May 2014 4,864 5 View

How can we use Raman to find number of layers of graphene?

Some researchers use XRD to obtain number of layers in graphene and graphene oxide but in case of graphene when we have full reduction, XRD is not applicable. Does anybody know how we can use...

05 May 2014 8,616 18 View

Can someone suggest a material that will behave as a microwave absorbent?

I use a microwave (700w) and I am looking for a material which is microwave safe (with the exception of of water).

01 January 2014 3,178 8 View

How can I separate GO from water solution?

I used sonication to disperse GO in water but I can not separate GO from water after sonication by centrifuge even at 10000 rpm for 3 hours. Can you suggest a better way to separate GO?

01 January 2014 6,795 5 View

Can we use Raman data to find the number of graphene layers?

I know if intensity of 2D peak to G peak is 2-3 then we have single graphene layer. Can we use other ratios for this aim? For example in one sample, I2D/IG=0.5. I read many articles but they...

01 January 2014 4,870 3 View

Can anyone advise on a problem in the reduction part with graphene?

My problem is that I couldn't find the good temperature for reduction. It shows in XRD that we have additional peaks.

11 November 2013 9,630 17 View