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. 2015 Feb 6;5:8311. doi: 10.1038/srep08311

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AFM images of (a) a CVD graphene film and (b) a CVD graphene film modified with PtNPs. CV curves of (c) a graphene electrode and (d) a PtNPs/graphene electrode characterized in PBS solution and 5 mM H₂O₂ PBS solution with a scan rate of 50 mV/s.