Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Pt–Ni Seed-Core-Frame Hierarchical Nanostructures and Their Conversion to Nanoframes for Enhanced Methanol Electro-Oxidation

Journal Article · · Catalysts
DOI:https://doi.org/10.3390/catal9010039· OSTI ID:1507112

Pt–Ni nanostructures are a class of important electrocatalysts for polymer electrolyte membrane fuel cells. This work reports a systematic study on the reaction mechanism of the formation of Pt–Ni seed-core-frame nanostructures via the seeded co-reduction method involving the Pt seeds and selective co-reduced deposition of Pt and Ni. The resultant structure consists of a branched Pt ultrafine seed coated with a pure Ni as rhombic dodecahedral core and selective deposition of Pt on the edges of the cores. Both the type of Pt precursor and the precursor ratio of Pt/Ni are critical factors to form the resulting shape of the seeds and eventually the morphology of the nanostructures. These complex hierarchical structures can be further graved into hollow Pt–Ni alloy nanoframes using acetic acid etching method. The larger surface area and higher number of low coordinate sites of the nanoframes facilitate the electrocatalytic activity and stability of Pt–Ni alloy for methanol oxidation as compared to their solid counterparts. This study elucidates the structural and compositional evolution of the complex nanoarchitectures and their effects on the electrocatalytic properties of the nanostructures.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
SC0012704
OSTI ID:
1507112
Report Number(s):
BNL--211541-2019-JAAM
Journal Information:
Catalysts, Journal Name: Catalysts Journal Issue: 1 Vol. 9; ISSN CATACJ; ISSN 2073-4344
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
English

References (47)

Correlation Between Surface Chemistry and Electrocatalytic Properties of Monodisperse PtxNi1-x Nanoparticles journal November 2010
Bimetallic Nanocrystals: Liquid-Phase Synthesis and Catalytic Applications journal January 2011
Dendritic Core-Frame and Frame Multimetallic Rhombic Dodecahedra: A Comparison Study of Composition and Structure Effects on Electrocatalysis of Methanol Oxidation journal November 2017
Synthesis of Pt-Cu Nanodendrites through Controlled Reduction Kinetics for Enhanced Methanol Electro-Oxidation journal September 2013
Tailoring the Surface Structures of CuPt and CuPtRu 1D Nanostructures by Coupling Coreduction with Galvanic Replacement journal April 2018
Platinum Monolayer Fuel Cell Electrocatalysts journal November 2007
Synthesis and electrocatalytic oxygen reduction properties of truncated octahedral Pt3Ni nanoparticles journal October 2010
Platinum Monolayer Electrocatalysts: Tunable Activity, Stability, and Self-Healing Properties journal September 2012
Limiting oxygen coverage on platinized platinum; Relevance to determination of real platinum area by hydrogen adsorption journal February 1971
Recent advances in platinum monolayer electrocatalysts for oxygen reduction reaction: Scale-up synthesis, structure and activity of Pt shells on Pd cores journal March 2010
A review of hollow Pt-based nanocatalysts applied in proton exchange membrane fuel cells journal June 2013
Emerging Pt-based electrocatalysts with highly open nanoarchitectures for boosting oxygen reduction reaction journal August 2018
Morphology and Phase Controlled Construction of Pt–Ni Nanostructures for Efficient Electrocatalysis journal March 2016
Thermal Facet Healing of Concave Octahedral Pt–Ni Nanoparticles Imaged in Situ at the Atomic Scale: Implications for the Rational Synthesis of Durable High-Performance ORR Electrocatalysts journal December 2015
Pt–Ni Octahedra as Electrocatalysts for the Ethanol Electro-Oxidation Reaction journal July 2017
Unsupported Platinum-Based Electrocatalysts for Oxygen Reduction Reaction journal August 2017
Effects of Catalyst Processing on the Activity and Stability of Pt–Ni Nanoframe Electrocatalysts journal July 2018
Electrocatalysis for Polymer Electrolyte Fuel Cells: Recent Achievements and Future Challenges journal April 2012
Truncated Octahedral Pt 3 Ni Oxygen Reduction Reaction Electrocatalysts journal April 2010
Enhanced Electrocatalytic Performance of Processed, Ultrathin, Supported Pd–Pt Core–Shell Nanowire Catalysts for the Oxygen Reduction Reaction journal June 2011
Design and Synthesis of Bimetallic Electrocatalyst with Multilayered Pt-Skin Surfaces journal September 2011
Solvothermal Synthesis of Platinum Alloy Nanoparticles for Oxygen Reduction Electrocatalysis journal May 2012
Seed-Mediated Synthesis of Core/Shell FePtM/FePt (M = Pd, Au) Nanowires and Their Electrocatalysis for Oxygen Reduction Reaction journal September 2013
Sophisticated Construction of Au Islands on Pt–Ni: An Ideal Trimetallic Nanoframe Catalyst journal August 2014
Scalable Bromide-Triggered Synthesis of Pd@Pt Core–Shell Ultrathin Nanowires with Enhanced Electrocatalytic Performance toward Oxygen Reduction Reaction journal June 2015
Atomic Structure of Pt 3 Ni Nanoframe Electrocatalysts by in Situ X-ray Absorption Spectroscopy journal December 2015
Control of Architecture in Rhombic Dodecahedral Pt–Ni Nanoframe Electrocatalysts journal August 2017
Tuning the Electrocatalytic Oxygen Reduction Reaction Activity and Stability of Shape-Controlled Pt–Ni Nanoparticles by Thermal Annealing − Elucidating the Surface Atomic Structural and Compositional Changes journal November 2017
Chemical and Electronic Effects of Ni in Pt/Ni and Pt/Ru/Ni Alloy Nanoparticles in Methanol Electrooxidation journal February 2002
Platinum Monolayer Electrocatalysts for O2 Reduction:  Pt Monolayer on Pd(111) and on Carbon-Supported Pd Nanoparticles journal July 2004
Promoting Effect of Ni in PtNi Bimetallic Electrocatalysts for the Methanol Oxidation Reaction in Alkaline Media: Experimental and Density Functional Theory Studies journal November 2010
Anisotropic Seeded Growth of Cu–M (M = Au, Pt, or Pd) Bimetallic Nanorods with Tunable Optical and Catalytic Properties journal April 2013
Temperature-Dependent Hydrogen Electrochemistry on Platinum Low-Index Single-Crystal Surfaces in Acid Solutions journal July 1997
Octahedral PtNi Nanoparticle Catalysts Exceptional Oxygen Reduction Activity by Tuning the Alloy Particle Surface Composition journal October 2012
Synthesis and Oxygen Reduction Activity of Shape-Controlled Pt 3 Ni Nanopolyhedra journal February 2010
Compositional segregation in shaped Pt alloy nanoparticles and their structural behaviour during electrocatalysis journal June 2013
Anisotropic phase segregation and migration of Pt in nanocrystals en route to nanoframe catalysts journal August 2016
The Scherrer equation versus the 'Debye-Scherrer equation' journal August 2011
Generation of highly amenable cellulose-Iβ via selective delignification of rice straw using a reusable cyclic ether-assisted deep eutectic solvent system journal January 2021
Strategic synthesis of mesoporous Pt-on-Pd bimetallic spheres templated from a polymeric micelle assembly journal January 2016
Bifunctional anode catalysts for direct methanol fuel cells journal January 2012
Vegard’s law journal March 1991
Formation of Hollow Nanocrystals Through the Nanoscale Kirkendall Effect journal April 2004
Improved Oxygen Reduction Activity on Pt3Ni(111) via Increased Surface Site Availability journal January 2007
Highly Crystalline Multimetallic Nanoframes with Three-Dimensional Electrocatalytic Surfaces journal February 2014
Synthesis and Characterization of Dendritic Pt Nanoparticles by Using Cationic Surfactant journal September 2018
Micelle-Assisted Strategy for the Direct Synthesis of Large-Sized Mesoporous Platinum Catalysts by Vapor Infiltration of a Reducing Agent journal October 2018

Cited By (1)

Noble Metal Based Alloy Nanoframes: Syntheses and Applications in Fuel Cells journal July 2019

Similar Records

Dendritic Core-Frame and Frame Multimetallic Rhombic Dodecahedra: A Comparison Study of Composition and Structure Effects on Electrocatalysis of Methanol Oxidation
Journal Article · Thu Nov 02 20:00:00 EDT 2017 · ChemNanoMat · OSTI ID:1426447

Control of Architecture in Rhombic Dodecahedral Pt–Ni Nanoframe Electrocatalysts
Journal Article · Tue Aug 08 00:00:00 EDT 2017 · Journal of the American Chemical Society · OSTI ID:1395869

Control of Architecture in Rhombic Dodecahedral Pt–Ni Nanoframe Electrocatalysts
Journal Article · Tue Aug 08 00:00:00 EDT 2017 · Journal of the American Chemical Society · OSTI ID:1414702