Unveiling the size effect of Pt-on-Au nanostructures on CO and methanol electrooxidation by: In situ electrochemical SERS - Details

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In　situ　monitoring　of　electrocatalytic　processes　at　solid-liquid　interfaces　is　essential　for　the　fundamental　understanding　of　reaction　mechanisms,　yet　quite　challenging.　Herein,　Pt-on-Au　nanocatalysts　with　a　Au-core　Pt-satellite　superstructure　have　been　fabricated.　In　such　Pt-on-Au　nanocatalysts,　the　Au　cores　can　greatly　amplify　the　Raman　signals　of　the　species　adsorbed　on　Pt,　allowing　the　in　situ　surface-enhanced　Raman　spectroscopy　(SERS)　study　of　the　electrocatalytic　reactions　on　Pt.　Using　the　combination　of　an　electrochemical　method　and　in　situ　SERS,　size　effects　of　Pt　on　the　catalytic　performance　of　the　core-satellite　nanocomposites　towards　CO　and　methanol　electrooxidation　are　revealed.　It　is　found　that　such　Pt-on-Au　nanocomposites　show　improved　activity　and　long-term　stability　for　the　electrooxidation　of　CO　and　methanol　with　a　decrease　in　the　Pt　size.　This　work　demonstrates　an　effective　strategy　to　achieve　the　in　situ　monitoring　of　electrocatalytic　processes　and　to　simultaneously　boost　their　catalytic　performance　towards　electrooxidation.　©　2020　The　Royal　Society　of　Chemistry.

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[ 1 ] [Chen, X.]Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou Fujian, 350108, China
[ 2 ] [Chen, X.]State Key Laboratory of Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Advanced Materials, IChEM, College of Chemistry and Chemical Engineering, College of Materials, Department of Physics, Xiamen University, Xiamen, 361005, China
[ 3 ] [Liang, M.-M.]State Key Laboratory of Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Advanced Materials, IChEM, College of Chemistry and Chemical Engineering, College of Materials, Department of Physics, Xiamen University, Xiamen, 361005, China
[ 4 ] [Xu, J.]State Key Laboratory of Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Advanced Materials, IChEM, College of Chemistry and Chemical Engineering, College of Materials, Department of Physics, Xiamen University, Xiamen, 361005, China
[ 5 ] [Sun, H.-L.]State Key Laboratory of Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Advanced Materials, IChEM, College of Chemistry and Chemical Engineering, College of Materials, Department of Physics, Xiamen University, Xiamen, 361005, China
[ 6 ] [Wang, C.]State Key Laboratory of Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Advanced Materials, IChEM, College of Chemistry and Chemical Engineering, College of Materials, Department of Physics, Xiamen University, Xiamen, 361005, China
[ 7 ] [Wei, J.]State Key Laboratory of Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Advanced Materials, IChEM, College of Chemistry and Chemical Engineering, College of Materials, Department of Physics, Xiamen University, Xiamen, 361005, China
[ 8 ] [Zhang, H.]State Key Laboratory of Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Advanced Materials, IChEM, College of Chemistry and Chemical Engineering, College of Materials, Department of Physics, Xiamen University, Xiamen, 361005, China
[ 9 ] [Yang, W.-M.]State Key Laboratory of Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Advanced Materials, IChEM, College of Chemistry and Chemical Engineering, College of Materials, Department of Physics, Xiamen University, Xiamen, 361005, China
[ 10 ] [Yang, Z.-L.]State Key Laboratory of Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Advanced Materials, IChEM, College of Chemistry and Chemical Engineering, College of Materials, Department of Physics, Xiamen University, Xiamen, 361005, China
[ 11 ] [Sun, J.-J.]Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou Fujian, 350108, China
[ 12 ] [Tian, Z.-Q.]State Key Laboratory of Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Advanced Materials, IChEM, College of Chemistry and Chemical Engineering, College of Materials, Department of Physics, Xiamen University, Xiamen, 361005, China
[ 13 ] [Li, J.-F.]State Key Laboratory of Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Advanced Materials, IChEM, College of Chemistry and Chemical Engineering, College of Materials, Department of Physics, Xiamen University, Xiamen, 361005, China

Reprint 's Address：

[Zhang, H.]State Key Laboratory of Physical Chemistry of Solid Surfaces, Fujian Key Laboratory of Advanced Materials, IChEM, College of Chemistry and Chemical Engineering, College of Materials, Department of Physics, Xiamen UniversityChina

Email：

zhanghua@xmu.edu.cn

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Nanoscale

ISSN： 2040-3364

Year： 2020

Issue： 9

Volume： 12

Page： 5341-5346

7 . 7 9

JCR@2020

5 . 8 0 0

JCR@2023

ESI HC Threshold：115

JCR Journal Grade：1

CAS Journal Grade：2

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SCOPUS Cited Count：

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 1

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