Synthesis, shape control, and methanol electro-oxidation properties of Pt-Zn alloy and Pt3Zn intermetallic nanocrystals

ACS Nano
Yijin KangChristopher B Murray

Abstract

We report the first synthesis of highly monodisperse Pt(3)Zn nanocrystals (NCs). Shape-controlled synthesis generates cubic and spherical Pt-Zn NCs. Reaction temperature is the key to incorporate Zn into Pt, even in the absence of a strong reducing agent. The Pt-Zn NCs are active toward methanol oxidation, with the spherical NCs exhibiting higher activity than the cubic NCs. The Pt-Zn alloy phase can be transformed into the Pt(3)Zn intermetallic phase, upon annealing. The intermetallic Pt(3)Zn shows better performance than the alloy phase Pt-Zn. Besides the activity toward methanol oxidation, Pt-Zn NCs show excellent poisoning tolerance. With activities comparable to the commercial Pt catalyst, enhanced poisoning tolerance and lower cost, Pt-Zn and Pt(3)Zn NCs are a promising new family of catalysts for direct methanol fuel cells.

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Citations

Mar 7, 2013·Accounts of Chemical Research·Nathan S PorterJiye Fang
Dec 6, 2012·ACS Nano·Yijin KangChristopher B Murray
Sep 23, 2014·Chemical Communications : Chem Comm·Da-Bing HuangZhi-You Zhou
Jul 17, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·S Jafar HoseiniMehdi Rashidi
Feb 18, 2016·Chemical Reviews·Minhua ShaoRegis Chenitz
Dec 17, 2015·Journal of the American Chemical Society·Dong Young ChungTaeghwan Hyeon
Jun 8, 2013·Angewandte Chemie·Hui-Hui LiShu-Hong Yu
Aug 14, 2013·ChemSusChem·Shunichi Fukuzumi, Yusuke Yamada
Feb 6, 2015·Chemical Society Reviews·Yao NieZidong Wei
Jul 29, 2016·ACS Applied Materials & Interfaces·Inayat Ali KhanMuhammad Arif Nadeem
May 1, 2014·The Journal of Physical Chemistry Letters·Xinxing ZhangAnastassia N Alexandrova
Dec 12, 2012·Journal of the American Chemical Society·Yijin KangChristopher B Murray
May 14, 2014·Langmuir : the ACS Journal of Surfaces and Colloids·Qiang YuanZhi-You Zhou
Jan 9, 2013·Journal of the American Chemical Society·Yijin KangChristopher B Murray
Jul 29, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Weiyue ZhaoXun Wang
Nov 2, 2017·Dalton Transactions : an International Journal of Inorganic Chemistry·Kousik BhuniaDebabrata Pradhan
Jul 10, 2018·Advanced Materials·Jocelyn T L GamlerKallum M Koczkur
Jun 19, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Yuchen QinXin Zhang

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