title: Stable platinum nanoclusters on genomic DNA-graphene oxide with a high oxygen reduction reaction activity.
abstract: Nanosize platinum clusters with small diameters of 2-4 nm are known to be excellent catalysts for the oxygen reduction reaction. The inherent catalytic activity of smaller platinum clusters has not yet been reported due to a lack of preparation methods to control their size (<2 nm). Here we report the synthesis of platinum clusters (diameter ≤1.4 nm) deposited on genomic double-stranded DNA-graphene oxide composites, and their high-performance electrocatalysis of the oxygen reduction reaction. The electrochemical behaviour, characterized by oxygen reduction reaction onset potential, half-wave potential, specific activity, mass activity, accelerated durability test (10,000 cycles) and cyclic voltammetry stability (10,000 cycles) is attributed to the strong interaction between the nanosize platinum clusters and the DNA-graphene oxide composite, which induces modulation in the electronic structure of the platinum clusters. Furthermore, we show that the platinum cluster/DNA-graphene oxide composite possesses notable environmental durability and stability, vital for high-performance fuel cells and batteries.
authors.affiliation: Center for Superfunctional Materials, Department of Chemistry, Pohang University of Science and Technology, San 31, Hyojadong, Namgu, Pohang 790-784, Korea.
authors.forename: Jitendra N
authors.initials: JN
authors.lastname: Tiwari
authors.forename: Krishna
authors.initials: K
authors.lastname: Nath
authors.forename: Susheel
authors.initials: S
authors.lastname: Kumar
authors.forename: Rajanish N
authors.initials: RN
authors.lastname: Tiwari
authors.forename: K Christian
authors.initials: KC
authors.lastname: Kemp
authors.forename: Nhien H
authors.initials: NH
authors.lastname: Le
authors.forename: Duck Hyun
authors.initials: DH
authors.lastname: Youn
authors.forename: Jae Sung
authors.initials: JS
authors.lastname: Lee
authors.forename: Kwang S
authors.initials: KS
authors.lastname: Kim
mesh_terms: D017360:Arabidopsis / Q000235:genetics; D002384:Catalysis; D018744:DNA, Plant / Q000378:metabolism*; D004563:Electrochemistry; D018745:Genome, Plant / Q000235:genetics*; D006108:Graphite / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry*; D010316:Particle Size; D010984:Platinum / Q000737:chemistry*; D012996:Solutions
chemical_list: D018744:DNA, Plant; D012996:Solutions; D010984:Platinum; D006108:Graphite; D010100:Oxygen
references.citation: Science. 2004 Oct 22;306(5696):666-9
references.pmid: 15499015
references.citation: Chem Rev. 2012 Nov 14;112(11):6156-214
references.pmid: 23009634
references.citation: Nat Nanotechnol. 2008 Jul;3(7):408-12
references.pmid: 18654564
references.citation: Angew Chem Int Ed Engl. 2011 Dec 2;50(49):11644-8
references.pmid: 21990208
references.citation: Nat Chem. 2009 Aug;1(5):397-402
references.pmid: 21378894
references.citation: J Chem Theory Comput. 2012 Jan 10;8(1):99-105
references.pmid: 26592872
references.citation: ChemSusChem. 2010 Apr 26;3(4):460-6
references.pmid: 20101666
references.citation: Nat Nanotechnol. 2011 Mar;6(3):162-5
references.pmid: 21297626
references.citation: Angew Chem Int Ed Engl. 2011 Jan 10;50(2):431-5
references.pmid: 21154543
references.citation: Anal Chem. 2006 Sep 15;78(18):6656-9
references.pmid: 16970348
references.citation: Chem Rev. 2000 Nov 8;100(11):4145-86
references.pmid: 11749343
references.citation: Adv Mater. 2012 Nov 27;24(45):6081-7
references.pmid: 22961629
references.citation: Biomed Microdevices. 2004 Jun;6(2):105-11
references.pmid: 15320631
references.citation: Nature. 2006 Jul 20;442(7100):282-6
references.pmid: 16855586
references.citation: Nat Nanotechnol. 2009 Apr;4(4):217-24
references.pmid: 19350030
references.citation: Nat Nanotechnol. 2010 Aug;5(8):574-8
references.pmid: 20562870
references.citation: Nat Mater. 2011 Oct;10(10):780-6
references.pmid: 21822263
references.citation: Chem Rev. 2010 Jan;110(1):132-45
references.pmid: 19610631
references.citation: ACS Nano. 2010 Dec 28;4(12):7358-62
references.pmid: 21080682
references.citation: ACS Appl Mater Interfaces. 2010 Aug;2(8):2231-7
references.pmid: 20735093
references.citation: Chem Commun (Camb). 2008 Dec 28;(48):6516-8
references.pmid: 19057764
references.citation: J Chem Theory Comput. 2009 Jun 9;5(6):1709-17
references.pmid: 26609861
references.citation: Nat Mater. 2011 Apr;10(4):310-5
references.pmid: 21423188
references.citation: Science. 2009 Jun 5;324(5932):1302-5
references.pmid: 19443738
references.citation: Science. 2001 Oct 12;294(5541):348-51
references.pmid: 11546837
references.citation: Science. 2011 Apr 22;332(6028):443-7
references.pmid: 21512028
references.citation: Adv Mater. 2011 May 17;23(19):2221-5
references.pmid: 21469221
references.citation: Science. 2009 Jun 5;324(5932):1312-4
references.pmid: 19423775
references.citation: J Am Chem Soc. 2001 Oct 31;123(43):10748-9
references.pmid: 11674012
references.citation: Nature. 2009 Feb 5;457(7230):706-10
references.pmid: 19145232