Three-dimensional hierarchical Pt-Cu superstructures

Three-dimensional （3D） hierarchical Pt-Cu tetragonal, highly branched, and dendritic superstructures have been synthesized by a facile template-free hydrothermal approach, showing growth patterns along （111, 110）, （111）, and （100） planes, respectively. These structures have been characterized by tra...

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Published inNano research Vol. 8; no. 3; pp. 832 - 838
Main Authors Nosheen, Farhat, Zhang, Zhicheng, Xiang, Guolei, Xu, Biao, Yang, Yong, Saleem, Faisal, Xu, Xiaobin, Zhang, Jingchao, Wang, Xun
Format Journal Article
LanguageEnglish
Published Heidelberg Tsinghua University Press 01.03.2015
Subjects
Alloys
Atomic/Molecular Structure and Spectra
Biomedicine
Biotechnology
Chemistry and Materials Science
Condensed Matter Physics
Diffraction
Electrocatalysis
Ethanol
Ethyl alcohol
Formations
ICP-OES
Materials Science
Metals
Methanol
Methyl alcohol
Nanocrystals
Nanostructure
Nanotechnology
Oxidation
Platinum
Research Article
Scanning electron microscopy
Single crystals
Spectrometry
Superstructures
Three dimensional
Transmission electron microscopy
X-ray diffraction
X-ray spectroscopy
三维
上层建筑
光学发射光谱
电感耦合等离子体
透射电子显微镜
铂
铜
alloy
hierarchical structures
electrocatalysis
noble metal
Online AccessGet full text
ISSN1998-0124
1998-0000
DOI10.1007/s12274-014-0565-1

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Summary:Three-dimensional （3D） hierarchical Pt-Cu tetragonal, highly branched, and dendritic superstructures have been synthesized by a facile template-free hydrothermal approach, showing growth patterns along （111, 110）, （111）, and （100） planes, respectively. These structures have been characterized by transmission electron microscopy （TEM）, X-ray diffraction （XRD）, energy dispersive X-ray spectroscopy （EDX）, inductively coupled plasma optical emission spectrometry （ICP-OES） and a detailed formation mechanism has been developed, which shows that the in situ formed 12 and the galvanic replacement reaction between Cu and Pt4, may guide the formation of these superstructures. The comparative electrocatalytic properties have been investigated for methanol and ethanol oxidation. Due to their interconnected arms, sufficient absorption sites, and exposed surfaces, these superstructures exhibit enhanced electrocatalytic performance for electro-oxidation of methanol and ethanol when compared with commercial Pt/C and Pt black.
Bibliography:11-5974/O4
noble metal,alloy,hierarchical structures,electrocatalysis
Three-dimensional （3D） hierarchical Pt-Cu tetragonal, highly branched, and dendritic superstructures have been synthesized by a facile template-free hydrothermal approach, showing growth patterns along （111, 110）, （111）, and （100） planes, respectively. These structures have been characterized by transmission electron microscopy （TEM）, X-ray diffraction （XRD）, energy dispersive X-ray spectroscopy （EDX）, inductively coupled plasma optical emission spectrometry （ICP-OES） and a detailed formation mechanism has been developed, which shows that the in situ formed 12 and the galvanic replacement reaction between Cu and Pt4, may guide the formation of these superstructures. The comparative electrocatalytic properties have been investigated for methanol and ethanol oxidation. Due to their interconnected arms, sufficient absorption sites, and exposed surfaces, these superstructures exhibit enhanced electrocatalytic performance for electro-oxidation of methanol and ethanol when compared with commercial Pt/C and Pt black.
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ISSN:1998-0124
1998-0000
DOI:10.1007/s12274-014-0565-1