Graphene Quantum Dots Supported by Graphene Nanoribbons with Ultrahigh Electrocatalytic Performance for Oxygen Reduction

A new class of oxygen reduction reaction catalysts based on graphene quantum dots supported by graphene nanoribbons has been developed through a one-step simultaneous reduction reaction, leading to ultrahigh performance for O reduction with an excellent electrocatalytic activity and high selectivity and stability in alkaline media comparable to the best C-based ORR catalysts reported so far

Huile Jin; Huihui Huang; Yuhua He; Xin Feng; Shun Wang; Liming Dai; Jichang Wang

2015

Scholarcy highlights

  • A new class of oxygen reduction reaction catalysts based on graphene quantum dots supported by graphene nanoribbons has been developed through a one-step simultaneous reduction reaction, leading to ultrahigh performance for O reduction with an excellent electrocatalytic activity and high selectivity and stability in alkaline media comparable to the best C-based ORR catalysts reported so far
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  • Electron microscopy revealed numerous surface/edge defects on the GQD/GNR surfaces and at their interface to act as the active sites
  • The effects of the composition and structure of quantum dots combined with cobalt phthalocyanine and an aptamer on the electrochemical detection of prostate specific antigen

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