▎ 摘　　要

Graphene oxide, MPGO, was obtained by oxidation of graphite microparticles by a H2SO4/KMnO4/H2O2 mixture followed by thermal exfoliation. Non-thermal plasma treatment of MPGO under SO2 atmosphere resulted in the insertion of the oxidized intermediates only. Refluxing this material in CS2 (46 degrees C) showed sulfur elimination and interconversion of the oxidized into non-oxidized intermediates with an energetic barrier of G(double dagger)=25.81kcalmol(-1) without decarboxylation. The episulfide content in modified MPGO increases with respect to the oxidized intermediates when increasing temperature. Modification of MPGO with SO2 at 630 degrees C presented exclusively the non-oxidized intermediate. These results support the hypothesis that there are two major reactions with different energetic demand in the SO2 reduction on carbons: desulfurization and decarboxylation. The selectivity of thiolysis and aminolysis towards the intermediates inserted in the MPGO matrix allowed the amino-thiolysis of a sample containing both intermediates with the insertion of the amino group on the episulfide site followed by an intramolecular thiolysis with double functionalization of the matrix. Copyright (c) 2016 John Wiley & Sons, Ltd.