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

Synthesis and Characterization of Core-Shell Cu-Ru, Cu-Rh, and Cu-Ir Nanoparticles

Journal Article · · Journal of the American Chemical Society
DOI:https://doi.org/10.1021/jacs.2c02538· OSTI ID:1903750

Optimizing the use of expensive precious metals is critical to developing sustainable and low-cost processes for heterogeneous catalysis or electrochemistry. Here, we report a synthesis method that yields core-shell Cu-Ru, Cu-Rh, and Cu-Ir nanoparticles with the platinum-group metals segregated on the surface. The synthesis of Cu-Ru, Cu-Rh, and Cu-Ir particles allows maximization of the surface area of these metals and improves catalytic performance. Furthermore, the Cu core can be selectively etched to obtain nanoshells of the platinum-group metal components, leading to a further increase in the active surface area. Characterization of the samples was performed with X-ray absorption spectroscopy, X-ray powder diffraction, and ex situ and in situ transmission electron microscopy. CO oxidation was used as a reference reaction: the three core-shell particles and derivatives exhibited promising catalyst performance and stability after redox cycling. Furthermore, these results suggest that this synthesis approach may optimize the use of platinum-group metals in catalytic applications.

Research Organization:
Harvard Univ., Cambridge, MA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); NSF National Nanotechnology Coordinated Infrastructure Program
Grant/Contract Number:
SC0012573; SC0012704
OSTI ID:
1903750
Journal Information:
Journal of the American Chemical Society, Journal Name: Journal of the American Chemical Society Journal Issue: 17 Vol. 144; ISSN 0002-7863
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (53)

A Single‐Atom Iridium Heterogeneous Catalyst in Oxygen Reduction Reaction journal June 2019
Pt-Cu Core-Shell and Alloy Nanoparticles for Heterogeneous NOx Reduction: Anomalous Stability and Reactivity of a Core-Shell Nanostructure journal July 2005
Highly Magnetic Core-Shell Nanoparticles with a Unique Magnetization Mechanism journal April 2011
Supported Rhodium Oxide Nanoparticles as Highly Active CO Oxidation Catalysts journal April 2011
Modulating fcc and hcp Ruthenium on the Surface of Palladium–Copper Alloy through Tunable Lattice Mismatch journal March 2016
Mechanistic Studies of Methane Partial Oxidation to Syngas over SiO2-Supported Rhodium Catalysts journal April 1997
The Cu−Rh (Copper-Rhodium) system journal March 1982
Applications of Rhodium and Ruthenium Catalysts for CO Oxidation: an Overview journal May 2020
Chemisorption properties of iridium on alumina catalysts journal September 1980
Fischer-Tropsch synthesis on cobalt and ruthenium. Metal dispersion and support effects on reaction rate and selectivity journal September 1992
Supported rhodium catalysts for nitrous oxide decomposition in the presence of NO, CO2, SO2 and CO journal May 1995
Effect of the nature of carbon support on the formation of active sites in Pd/C and Ru/C catalysts for hydrogenation of furfural journal July 2015
Bimetallic effects in the liquid-phase hydrogenation of 2-butanone journal December 2005
Stabilizing CuPd bimetallic alloy nanoparticles deposited on holey carbon nitride for selective hydroxylation of benzene to phenol journal November 2019
Improved activity and durability of Rh-based three-way catalyst under diverse aging atmospheres by ZrO 2 support journal February 2017
CO adsorption energies on metals with correction for high coordination adsorption sites – A density functional study journal April 2007
In Situ TEM Study of Catalytic Nanoparticle Reactions in Atmospheric Pressure Gas Environment journal September 2013
Toward Cost-Effective and Sustainable Use of Precious Metals in Heterogeneous Catalysts journal March 2017
Single-Atom Alloy Catalysis journal June 2020
Bimetallic Synergy on Iridium–Gold Catalysts for the CO Oxidation Reaction journal January 2022
Dynamical Change of Valence States and Structure in NiCu 3 Nanoparticles during Redox Cycling journal January 2022
Heterodimers for in Situ Plasmonic Spectroscopy: Cu Nanoparticle Oxidation Kinetics, Kirkendall Effect, and Compensation in the Arrhenius Parameters journal February 2019
CO Poisoning of Ru Catalysts in CO2 Hydrogenation under Thermal and Plasma Conditions: A Combined Kinetic and Diffuse Reflectance Infrared Fourier Transform Spectroscopy–Mass Spectrometry Study journal October 2020
Entropic Control of HD Exchange Rates over Dilute Pd-in-Au Alloy Nanoparticle Catalysts journal June 2021
Theoretical Approach To Predict the Stability of Supported Single-Atom Catalysts journal March 2019
Achieving High Selectivity for Alkyne Hydrogenation at High Conversions with Compositionally Optimized PdAu Nanoparticle Catalysts in Raspberry Colloid-Templated SiO 2 journal November 2019
Structural and Valence State Modification of Cobalt in CoPt Nanocatalysts in Redox Conditions journal November 2021
Kinetics of carbon monoxide oxidation by oxygen or nitric oxide on rhodium(111) and rhodium(100) single crystals journal March 1988
Kinetics of carbon monoxide oxidation on single-crystal palladium, platinum, and iridium journal September 1988
Ruthenium(II)-Catalyzed Asymmetric Transfer Hydrogenation of Ketones Using a Formic Acid−Triethylamine Mixture journal January 1996
Epitaxial and Strong Support Interactions between Pt and LaFeO 3 Films Stabilize Pt Dispersion journal May 2020
Colloidal Platinum–Copper Nanocrystal Alloy Catalysts Surpass Platinum in Low-Temperature Propene Combustion journal January 2022
Solid-Solution Alloying of Immiscible Ru and Cu with Enhanced CO Oxidation Activity journal March 2017
Au, Cu, Ag, Ni, and Pd Particles Grown in Solution at Different Electrode Potentials journal May 1997
New Ruthenium Complexes in the Catalytic Hydrogenation of Alkynes. Study of Structure and Mechanism journal January 1997
CO Poisoning of Ethylene Hydrogenation over Pt Catalysts: A Comparison of Pt(111) Single Crystal and Pt Nanoparticle Activities journal March 2003
Atom-by-atom structural and chemical analysis by annular dark-field electron microscopy journal March 2010
In situ spectroscopy-guided engineering of rhodium single-atom catalysts for CO oxidation journal March 2019
Decoding reactive structures in dilute alloy catalysts journal February 2022
Heterogeneous single-atom catalysis journal May 2018
Crystal-phase and surface-structure engineering of ruthenium nanocrystals journal March 2020
Enhancing catalytic performance of dilute metal alloy nanomaterials journal April 2020
Electronic Structure Evolution with Composition Alteration of RhxCuy Alloy Nanoparticles journal January 2017
Fischer–Tropsch synthesis on a ruthenium catalyst in two-phase systems: an excellent opportunity for the control of reaction rate and selectivity journal January 2014
Resolving single Cu nanoparticle oxidation and Kirkendall void formation with in situ plasmonic nanospectroscopy and electrodynamic simulations journal January 2019
Recent advances in understanding oxygen evolution reaction mechanisms over iridium oxide journal January 2021
Stability investigation of a high number density Pt 1 /Fe 2 O 3 single-atom catalyst under different gas environments by HAADF-STEM journal March 2018
Size-Dependent Icosahedral-to-fcc Structure Change Confirmed in Unsupported Nanometer-Sized Copper Clusters journal August 1997
ATHENA , ARTEMIS , HEPHAESTUS : data analysis for X-ray absorption spectroscopy using IFEFFIT journal June 2005
Overcoming immiscibility toward bimetallic catalyst library journal April 2020
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
First-principles design of a single-atom–alloy propane dehydrogenation catalyst journal June 2021

Similar Records

Interaction of ultrathin films of Cu with Rh(100) and Ru(0001): An XPS study
Journal Article · Wed Mar 20 23:00:00 EST 1991 · Journal of Physical Chemistry; (United States) · OSTI ID:5731196

Methane dissociation and syngas formation on Ru, Os, Rh, Ir, Pd, Pt, Cu, Ag, and Au: A theoretical study
Journal Article · Thu Jul 01 00:00:00 EDT 1999 · Journal of Catalysis · OSTI ID:684564

Preparation and optical properties of silica Ag-Cu alloy core-shell composite colloids
Journal Article · Sun Apr 15 00:00:00 EDT 2007 · Journal of Solid State Chemistry · OSTI ID:21015776