Layer-by-layer fabrication of chemical-bonded graphene coating for solid-phase microextraction.

  title={Layer-by-layer fabrication of chemical-bonded graphene coating for solid-phase microextraction.},
  author={Suling Zhang and Zhuo Du and Gongke Li},
  journal={Analytical chemistry},
  volume={83 19},
A new fabrication strategy of the graphene-coated solid-phase microextraction (SPME) fiber is developed. Graphite oxide was first used as starting coating material that covalently bonded to the fused-silica substrate using 3-aminopropyltriethoxysilane (APTES) as cross-linking agent and subsequently deoxidized by hydrazine to give the graphene coating in situ. The chemical bonding between graphene and the silica fiber improve its chemical stability, and the obtained fiber was stable enough for… CONTINUE READING
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