17th International Conference on Fundamental and Applied Aspects of Physical Chemistry (Proceedings, Volume I) (2024) [H-29-P, pp. 389-392]
AUTHOR(S) / AUTOR(I): Milica Pejčić 
, Željko Mravik , Marija Grujičić , Marko Jelić , Darija Petković , Jelena Rmuš Mravik , Predrag Stolić , Nenad Filipović , Sonja Jovanović and Zoran Jovanović
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DOI: 10.46793/Phys.Chem24I.389P
ABSTRACT / SAŽETAK:
The influence of different modification methods on the interaction between graphene oxide (GO) and perylenetetracarboxylic dianhydride (PTCDA) through the changes of nanocomposites’ surface chemistry i.e. changes in the desorption profile using the temperature programmed method (TPD) was investigated. The TPD method allowed better understanding of the type and amount of surface oxygen groups present on the surface of GO and their behaviour when combined with PTCDA. The nanocomposite was prepared by physical mixing initial GO and PTCDA suspensions. One part of resulting suspension was hydrothermally treated for 8h at 180oC. The other part was placed in an oven at 60 °C until completely dry and the resulting powder was thermally treated at T=450oC in Ar atmosphere. The third type of modification was done by ball milling for 20 min, where ball to powder mass ratio was at 10:1. GO and PTCDA (with 15% PTCDA) were initially mixed and homogenized in an agate pestle with mortar for 10 minutes, and then subjected to mechanochemical treatment. The results show that selected methods influence CO and CO2 desorption profile and the total amount of desorbed functional groups. These changes can be attributed to different nature of interaction between the GO and PTCDA in selected modification methods. Obtained results can be further expanded for engineering of the surface chemistry of graphene oxide-based nanocomposites for various applications.
KEYWORDS / KLJUČNE REČI:
ACKNOWLEDGEMENT / PROJEKAT:
This research was supported by the Science Fund of the Republic of Serbia, grant No. 6706, Low- dimensional nanomaterials for energy storage and sensing applications: Innovation through synergy of action – ASPIRE and by the Ministry of Science, Technological Development and Innovation of the Republic of Serbia (contracts No. 451-03-66/2024-03/200017 and 451-03-65/2024-03/200131).
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