can anyone please help me find an explanation for the adsorption of dye by reduced graphene oxide from the quenched rRman signal of reduced graphene oxide with methyl blue?
Did I get this right:
1) You adsorb Methyl on graphene oxide (flakes/epilayer/stack?).
2) Then you monitor the GO Raman signal before and after the adsorption.
3) The overall Raman signal decays significantly, not just a single mode (D/G).
First question: what is your laser wavelength? Can methyl blue just absorb your Raman scattered light? I mean, if it's just one layer, it would be surprising if that effect was this strong, but it's still a possible contribution.
Second question: how is the adsorption done? If it's wet chemistry, you might also have dissolved/suspended and washed away some of your GO.
hi Jürgen Weippert , thankyou so much for the response
yes i did it this way , the RGO attained was not single layer it was multilayered/stacked, the whole Raman signal was decreased
i dropped certain amount of RGO solution on tissue paper, then on top of it methyl blue solution then checked the Raman signals before and after and it seemed highly decreased
hope to hear from you soon
also, can you please help me with some explanation for this
OK, follow-up: is the tissue covered completely? If you just had a spot in the middle, you may have distributed the rGO further through the tissue as in some sort of "chromatography".
Dear Denet Davis
Similar kind of work I have seen manuscript enetitled on
The Adsorption of Methylene Blue on Eco-Friendly Reduced Graphene Oxide
https://www.mdpi.com/2079-4991/10/4/681
Dear Denet Davis
Similar kind of work I have seen manuscript entitled on
The Adsorption of Methylene Blue on Eco-Friendly Reduced Graphene Oxide
https://www.mdpi.com/2079-4991/10/4/681
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