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Questions related from Maria Magro
What do you think or suggest is the best route for purifying graphene oxide that is prepared chemically by the Hummers' method? It is known that this step is tedious, also due to the low pH of the...
05 May 2019 2,194 3 View
I have prepared graphite oxide using a Modified Hummers' method (basically I have followed Dimiev et al. approach, see attached). I need to conduct an XRD of the sample in the dry form, and would...
07 July 2018 5,893 3 View
Is it possible to spin coat a Silicon wafer with a suspension of graphene or graphene oxide to carry out XPS, AFM, and SEM characterisations? Are there any protocols that show the ideal rpm value...
07 July 2018 6,447 9 View
Is it possible to chemically prepare graphene directly from graphite and not through the (modified) Hummers' method; i.e. first prepare graphene oxide and then reduced it to possible graphene and...
05 May 2018 7,327 2 View
What is the best substrate for the XPS characterisation of graphene and graphene oxide? I will be using mostly the Al Ka radiation (hm = 1486.6 eV) to irradiate the samples, however not limited...
05 May 2018 3,895 4 View
I am new to using the XPS technique, but will be doing analysis of graphene and graphene oxide. Anyone knows or has any literature on how the calibration is carried out? Also, what master...
12 December 2017 9,051 11 View