Cited 41 time in webofscience Cited 43 time in scopus

Interconnected Pt-Nanodendrite/DNA/Reduced-Graphene-Oxide Hybrid Showing Remarkable Oxygen Reduction Activity and Stability

Title
Interconnected Pt-Nanodendrite/DNA/Reduced-Graphene-Oxide Hybrid Showing Remarkable Oxygen Reduction Activity and Stability
Authors
Tiwari, JN[Tiwari, Jitendra N.]Kemp, KC[Kemp, Kingsley Christian]Nath, K[Nath, Krishna]Tiwari, RN[Tiwari, Rajanish N.]Nam, HG[Nam, Hong-Gil]Kim, KS[Kim, Kwang S.]
DGIST Authors
Nath, K[Nath, Krishna]; Nam, HG[Nam, Hong-Gil]
Issue Date
2013-10
Citation
ACS Nano, 7(10), 9223-9231
Type
Article
Article Type
Article
Keywords
Catalyst ActivityCatalytic ActivityDNAElectrochemical EnergyElectrolytic ReductionFuel CellsGrapheneHalf-Wave PotentialMorphology and SizeNanodendritesOxygen ReductionOxygen Reduction ReactionPlatinumPt NanodendritesRate Determining StepU.S. Department of Energy
ISSN
1936-0851
Abstract
Controlling the morphology and size of platinum nanodendrites (PtDs) is a key factor in improving their catalytic activity and stability. Here, we report the synthesis of PtDs on genomic-double-stranded-DNA/reduced-graphene-oxide (gdsDNA/rGO) by the NaBH4 reduction of H2PtCl6 in the presence of plant gdsDNA. Compared to industrially adopted catalysts (i.e., state-of-the-art Pt/C catalyst, Pt/rGO, Pt3Co, etc.), the as-synthesized PtDs/gdsDNA/rGO hybrid displays very high oxygen reduction reaction (ORR) catalytic activities (much higher than the 2015 U.S. Department of Energy (DOE) target values), which are the rate-determining steps in electrochemical energy devices, in terms of onset-potential, half-wave potential, specific-activity, mass-activity, stability, and durability. Moreover, the hybrid exhibits a highly stable mass activity for the ORR over a wide pH range of 1-13. These exceptional properties would make the hybrid applicable in next-generation electrochemical energy devices. © 2013 American Chemical Society.
URI
http://hdl.handle.net/20.500.11750/1695
DOI
10.1021/nn4038404
Publisher
American Chemical Society
Related Researcher
Files:
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Collection:
New BiologyCBRG(Complex Biology Research Group)1. Journal Articles


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