• 文献标题:   Reactivity of the intermediates of the reduction of SO2. Functionalization of graphite, graphite oxide and graphene oxide
  • 文献类型:   Article
  • 作  者:   HUMERES E, DE CASTRO KM, SMANIOTTO A, LOPES CN, DEBACHER NA, MOREIRA RDPM, SCHREINER WH, ALIEV AE
  • 作者关键词:   aminolysi, functionalization, graphene oxide, graphite, graphite oxide, modification with so2, reaction with alkyl halide, selective functionalization, thiolysi
  • 出版物名称:   JOURNAL OF PHYSICAL ORGANIC CHEMISTRY
  • ISSN:   0894-3230 EI 1099-1395
  • 通讯作者地址:   Univ Fed Santa Catarina
  • 被引频次:   6
  • DOI:   10.1002/poc.3267
  • 出版年:   2014

▎ 摘  要

Graphite particles (0.505mm) were oxidized to graphite oxide with KClO3 in a H2SO4/HNO3 mixture. Graphite and graphite oxide particles were modified by reaction with SO2 at 630 degrees C. Thiolysis with sodium dodecane-1-thiolate and aminolysis with dodecane-1-amine of these particles occurred with the insertion of the organic moiety in the carbon matrix. Graphite microparticles (6.20 mu m) were oxidized by H2SO4/ KMnO4/ H2O2 mixture and were exfoliated to graphene oxide sheets (MPGO). MPGO was modified by reaction with SO2 at 630 degrees C. The modified MPGO was refluxed in DMSO with dodecane-1-thiol, dodecane-1-amine, and hexadecane-1-bromide. The reactions occurred with the insertion of the organic moiety in the carbon matrix, according to the X-ray photoelectron and nuclear magnetic resonance spectra. Mechanisms for the reactions were postulated using the atom inventory technique. Despite the structural differences, graphite, graphite oxide, and graphene oxide present the same selectivity for aminolysis and thiolysis reactions, with respect to the oxidized and non-oxidized intermediates of the reduction of SO2, as was found for the activated carbon. Copyright (c) 2014 John Wiley & Sons, Ltd.