NDLI: Particle Size Effect of Unsupported Pt/SnO$_{ x }$ Nanoparticles for Ethanol Electro-Oxidation

Content Provider	Springer Nature Link
Author	Baranova, Elena A. Tavasoli, Alexandra Amir, Tariq
Copyright Year	2011
Abstract	Unsupported colloidal Pt/SnO$_{ x }$ nanoparticles of three well-defined mean sizes: 2.5, 4.5, and 6.5 nm and Pt/Sn nominal composition of 70/30 at.% are synthesized and tested for ethanol electro-oxidation at room temperature. Studying unsupported particles allowed investigation of their intrinsic electrocatalytic behavior thus avoiding the metal support interaction effect. Change in particle size influenced the extent of tin surface segregation. For larger Pt/SnO$_{ x }$ nanoparticles of 4.5 and 6.5 nm, the higher surface enrichment by tin is observed, as well as the amount of Pt surface active sites decreases with increasing the particle size. Despite the low amount of surface active sites on larger colloids, their catalytic activity towards ethanol electro-oxidation is superior at low overpotentials if compared to smaller ones. Thus, at 0.4 V, particles of 6.5 and 4.5 nm mean size show higher current density as per geometric, as well as active surface area than 2.5 nm colloids. This confirms that large ensembles of Pt surface atoms are required in order to dissociatively adsorb ethanol molecules and efficiently break C–C bond. Another benefit in having larger Pt sites is associated with the fact that poisonous intermediates formed during ethanol oxidation, e.g., CO$_{ads}$ are less strongly adsorbed on larger particles, which have a greater amount of terrace sites and therefore can be efficiently removed by OH$_{ads}$ species provided by Sn.
Starting Page	89
Ending Page	95
Page Count	7
File Format	PDF
ISSN	18682529
Journal	Electrocatalysis
Volume Number	2
Issue Number	2
e-ISSN	18685994
Language	English
Publisher	Springer US
Publisher Date	2011-03-15
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	PtSn catalysts Ethanol electro-oxidation Bimetallic nanoparticles Colloids Electrochemistry Catalysis Energy Technology Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Electrochemistry

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Single-step polyol synthesis of alloy Pt$_{7}$Sn$_{3}$ versus bi-phase Pt/SnO$_{x}$ nano-catalysts of controlled size for ethanol electro-oxidation

Hierarchically Structured Pt–Alloy Ethanol Oxidation Electrocatalysts

Size-Dependent Methanol Electro-oxidation Activity of Pt Nanoparticles with Different Shapes

Electro-oxidation of Ethanol on Rh/Pt and Ru/Rh/Pt Sub-monolayers Deposited on Au/C Nanoparticles

In Situ Characterization of Ternary Pt–Rh–SnO$_{2}$/C Catalysts for Ethanol Electrooxidation

Ethanol Electro-oxidation on Pt/C Electrocatalysts: An “In Situ” Raman Spectroelectrochemical Study

Enhancement of Ethanol Oxidation Reaction on Pt (PtSn)-Activated Nickel Foam Through In situ Formation of Nickel Oxy-Hydroxide Layer

Electrocatalytic Properties of TiO$_{2}$-Embedded Pt Nanoparticles in Oxidation of Methanol: Particle Size Effect and Proton Spillover Effect

Oxygen Reduction Reaction on Pt–NiO$_{x}$/C, Pt–CoO$_{x}$/C, and Pt–SnO$_{2}$/C Electrodes in the Presence of Ethanol

Particle Size Effect of Unsupported Pt/SnO$_{ x }$ Nanoparticles for Ethanol Electro-Oxidation

Similar Documents

Single-step polyol synthesis of alloy Pt$_{7}$Sn$_{3}$ versus bi-phase Pt/SnO$_{x}$ nano-catalysts of controlled size for ethanol electro-oxidation

Hierarchically Structured Pt–Alloy Ethanol Oxidation Electrocatalysts

Size-Dependent Methanol Electro-oxidation Activity of Pt Nanoparticles with Different Shapes

Electro-oxidation of Ethanol on Rh/Pt and Ru/Rh/Pt Sub-monolayers Deposited on Au/C Nanoparticles

In Situ Characterization of Ternary Pt–Rh–SnO$_{2}$/C Catalysts for Ethanol Electrooxidation

Ethanol Electro-oxidation on Pt/C Electrocatalysts: An “In Situ” Raman Spectroelectrochemical Study

Enhancement of Ethanol Oxidation Reaction on Pt (PtSn)-Activated Nickel Foam Through In situ Formation of Nickel Oxy-Hydroxide Layer

Electrocatalytic Properties of TiO$_{2}$-Embedded Pt Nanoparticles in Oxidation of Methanol: Particle Size Effect and Proton Spillover Effect

Oxygen Reduction Reaction on Pt–NiO$_{x}$/C, Pt–CoO$_{x}$/C, and Pt–SnO$_{2}$/C Electrodes in the Presence of Ethanol

Particle Size Effect of Unsupported Pt/SnO$_{ x }$ Nanoparticles for Ethanol Electro-Oxidation