Hierarchical concave layered triangular PtCu alloy nanostructures: Rational integration of dendritic nanostructures for efficient formic acid electrooxidation

The rational construction of multi-dimensional layered noble metal nanostructures is a great challenge since noble metals are not layer-structured materials. Herein, we report a one-pot hydrothermal synthetic method for PtCu hierarchical concave layered triangular (HCLT) nanostructures using dl-carnitine, KI, poly(vinylpyrrolidone), CuCl2, and H2PtCl6. The PtCu HCLT nanostructure is comprised of multilayered triangular dendrites. Its layer number is tunable by changing dl-carnitine concentrations, and the concavity/convexity of the PtCu triangle nanostructures is tunable by changing the H2PtCl6/CuCl2 ratio or KI concentrations. Hierarchical trigonal bipyramid nanoframes are also obtained under certain conditions. Because of its advantageous nanostructure and bimetallic synergetic effect, the obtained PtCu HCLT nanostructure exhibits enhanced electrocatalytic activity and prolonged stability to formic acid oxidation compared to commercial Pt black, Pd/C and some other nanostructures. © 2018 The Royal Society of Chemistry.

Authors
Wu F.1, 2 , Lai J.1 , Zhang L.1 , Niu W.1 , Lou B.1 , Luque R. 1, 3, 4 , Xu G.1
Journal
Nanoscale
Publisher
Royal Society of Chemistry
Number of issue
19
Language
English
Pages
9369-9375
Status
Published
Link
External link
DOI
10.1039/c8nr00385h
Volume
10
Year
2018
Organizations
  • 1 State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
  • 2 University of Science and Technology of China, Hefei, China
  • 3 Departamento de Química Orgánica, Universidad de Córdoba, Campus de Rabanales, Edificio Marie Curie (C-3) Km 396, Córdoba, Spain
  • 4 Peoples Friendship University of Russia, RUDN University, 6 Miklukho-Maklaya str., Moscow, 117198, Russian Federation
Keywords
Binary alloys; Chlorine compounds; Copper compounds; Electrooxidation; Formic acid; Precious metals; Dendritic nanostructures; Electrocatalytic activity; Formic acid electrooxidation; Formic acid oxidation; Layer structured materials; Metal nanostructure; Poly(vinyl pyrrolidone); Rational construction; Nanostructures
Date of creation
19.10.2018
Date of change
19.10.2018
Short link
https://repository.rudn.ru/en/records/article/record/6648/
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