@article{61,
  author = {Joseph Roy-Mayhew and Michael Pope and Christian Punckt and Ilhan Aksay},
  title = {Intrinsic Catalytic Activity of Graphene Defects for the CoII/III (bpy) 3 Dye-Sensitized Solar Cell Redox Mediator},
  abstract = {<p>We demonstrate that functionalized graphene, rich with lattice defects but lean with oxygen sites, catalyzes the reduction of Co<sup>III</sup>(bpy)<sub>3</sub>&nbsp;as well as platinum does, exhibiting a rate of heterogeneous electron transfer,&nbsp;<em>k</em><sub>0</sub>, of ∼6 × 10<sup>–3</sup>&nbsp;cm/s. We show this rate to be an order of magnitude higher than on oxygen-site-rich graphene oxide, and over 2 orders of magnitude higher than on the basal plane of graphite (as a surrogate for pristine graphene). Furthermore, dye-sensitized solar cells using defect-rich graphene monolayers perform similarly to those using platinum nanoparticles as the catalyst.</p>
},
  year = {2016},
  journal = {ACS applied materials & interfaces},
  volume = {8},
  number = {14},
  pages = {9134-9141},
  publisher = {American Chemical Society},
  url = {https://doi.org/10.1021/acsami.6b00937},
}