skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: An inorganic capping strategy for the seeded growth of versatile bimetallic nanostructures

Journal Article · · Nanoscale
DOI:https://doi.org/10.1039/c5nr04614a· OSTI ID:1227421

Metal nanostructures have attracted great attention in various fields due to their tunable properties through precisely tailored sizes, compositions and structures. Using mesoporous silica (mSiO2) as the inorganic capping agent and encapsulated Pt nanoparticles as the seeds, we developed a robust seeded growth method to prepare uniform bimetallic nanoparticles encapsulated in mesoporous silica shells (PtM@mSiO2, M = Pd, Rh, Ni and Cu). Unexpectedly, we found that the inorganic silica shell is able to accommodate an eight-fold volume increase in the metallic core by reducing its thickness. The bimetallic nanoparticles encapsulated in mesoporous silica shells showed enhanced catalytic properties and thermal stabilities compared with those prepared with organic capping agents. As a result, this inorganic capping strategy could find a broad application in the synthesis of versatile bimetallic nanostructures with exceptional structural control and enhanced catalytic properties.

Research Organization:
Ames Lab., Ames, IA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
1227421
Report Number(s):
IS-J-8834; NANOHL
Journal Information:
Nanoscale, Vol. 7, Issue 40; ISSN 2040-3364
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 18 works
Citation information provided by
Web of Science

References (56)

Geometry-Assisted Three-Dimensional Superlocalization Imaging of Single-Molecule Catalysis on Modular Multilayer Nanocatalysts journal September 2014
Platinum-Modulated Cobalt Nanocatalysts for Low-Temperature Aqueous-Phase Fischer–Tropsch Synthesis journal March 2013
High-Temperature-Stable and Regenerable Catalysts: Platinum Nanoparticles in Aligned Mesoporous Silica Wells journal August 2013
Monodisperse Core/Shell Ni/FePt Nanoparticles and Their Conversion to Ni/Pt to Catalyze Oxygen Reduction journal November 2014
Synthesis of PtPd Bimetal Nanocrystals with Controllable Shape, Composition, and Their Tunable Catalytic Properties journal July 2012
Aerobic Oxidation of Cyclohexane Catalyzed by Size-Controlled Au Clusters on Hydroxyapatite: Size Effect in the Sub-2 nm Regime journal December 2010
Reaction-Driven Restructuring of Rh-Pd and Pt-Pd Core-Shell Nanoparticles journal November 2008
Highly Crystalline Multimetallic Nanoframes with Three-Dimensional Electrocatalytic Surfaces journal February 2014
Nanoscale-Phase-Separated Pd–Rh Boxes Synthesized via Metal Migration: An Archetype for Studying Lattice Strain and Composition Effects in Electrocatalysis journal September 2013
Metallic Nanocages: Synthesis of Bimetallic Pt–Pd Hollow Nanoparticles with Dendritic Shells by Selective Chemical Etching journal October 2013
Synthesis, Characterization, and Electrocatalytic Activity of PtPb Nanoparticles Prepared by Two Synthetic Approaches journal December 2006
Structural Characterization of Pt−Pd and Pd−Pt Core−Shell Nanoclusters at Atomic Resolution journal June 2009
Complex Nano-objects Displaying Both Magnetic and Catalytic Properties: A Proof of Concept for Magnetically Induced Heterogeneous Catalysis journal April 2015
Ru–Pt core–shell nanoparticles for preferential oxidation of carbon monoxide in hydrogen journal March 2008
Localized Pd Overgrowth on Cubic Pt Nanocrystals for Enhanced Electrocatalytic Oxidation of Formic Acid journal April 2008
Shaping binary metal nanocrystals through epitaxial seeded growth journal July 2007
Lattice-Mismatch-Induced Twinning for Seeded Growth of Anisotropic Nanostructures journal February 2015
Sub-10 nm Platinum Nanocrystals with Size and Shape Control: Catalytic Study for Ethylene and Pyrrole Hydrogenation journal April 2009
Rh−Pt Bimetallic Catalysts: Synthesis, Characterization, and Catalysis of Core−Shell, Alloy, and Monometallic Nanoparticles journal December 2008
Capping Ligands as Selectivity Switchers in Hydrogenation Reactions journal September 2012
Shape-Controlled Synthesis of Metal Nanocrystals: Simple Chemistry Meets Complex Physics? journal December 2008
Removal and Utilization of Capping Agents in Nanocatalysis journal September 2013
Facile removal of stabilizer-ligands from supported gold nanoparticles journal June 2011
High-Activity, Single-Site Mesoporous Pd/Al2O3 Catalysts for Selective Aerobic Oxidation of Allylic Alcohols journal November 2007
Enhanced CO Oxidation Rates at the Interface of Mesoporous Oxides and Pt Nanoparticles journal October 2013
Reduced graphene oxide as a catalyst for hydrogenation of nitrobenzene at room temperature journal January 2011
High-Surface-Area Catalyst Design:  Synthesis, Characterization, and Reaction Studies of Platinum Nanoparticles in Mesoporous SBA-15 Silica journal February 2005
One-Nanometer-Precision Control of Al 2 O 3 Nanoshells through a Solution-Based Synthesis Route journal October 2014
Unconventional Route to Encapsulated Ultrasmall Gold Nanoparticles for High-Temperature Catalysis journal June 2014
Durable Carbon-Coated Li 2 S Core–Shell Spheres for High Performance Lithium/Sulfur Cells journal March 2014
Multifunctional nanostructures based on porous silica covered Fe3O4@CeO2–Pt composites: a thermally stable and magnetically-recyclable catalyst system journal January 2014
Controllable Synthesis of Mesoporous TiO 2 Hollow Shells: Toward an Efficient Photocatalyst journal March 2013
A Versatile Kinetics-Controlled Coating Method To Construct Uniform Porous TiO 2 Shells for Multifunctional Core–Shell Structures journal July 2012
A Multi-Yolk-Shell Structured Nanocatalyst Containing Sub-10 nm Pd Nanoparticles in Porous CeO 2 journal September 2012
Soft-Templated Mesoporous Carbon-Carbon Nanotube Composites for High Performance Lithium-ion Batteries journal September 2011
Thermally Stable Pt/CeO2 Hetero-Nanocomposites with High Catalytic Activity journal April 2010
Core-Shell Assembled Nanoparticles as Catalysts journal September 2001
Synthesis of Nanosized Gold−Silica Core−Shell Particles journal January 1996
Anisotropic Encapsulation-Induced Synthesis of Asymmetric Single-Hole Mesoporous Nanocages journal April 2015
Thermally stable Pt/mesoporous silica core–shell nanocatalysts for high-temperature reactions journal November 2008
Architecture controlled PtNi@mSiO 2 and Pt–NiO@mSiO 2 mesoporous core–shell nanocatalysts for enhanced p-chloronitrobenzene hydrogenation selectivity journal January 2015
Immobilization of metalloporphyrin on a silica shell with bimetallic oxide core for ethylbenzene oxidation journal January 2015
Converting nanocrystalline metals into alloys and intermetallic compounds for applications in catalysis journal January 2008
Mechanisms of Nucleation and Growth of Nanoparticles in Solution journal July 2014
Kinetic Modeling of Pt-Catalyzed Glycolaldehyde Decomposition to Syngas journal April 2012
Size-Selected Synthesis of PtRu Nano-Catalysts:  Reaction and Size Control Mechanism journal June 2004
On the Polyol Synthesis of Silver Nanostructures: Glycolaldehyde as a Reducing Agent journal July 2008
The dissolution kinetics of amorphous silica into sodium chloride solutions: effects of temperature and ionic strength journal December 2000
Kinetically Stabilized Pd@Pt Core–Shell Octahedral Nanoparticles with Thin Pt Layers for Enhanced Catalytic Hydrogenation Performance journal January 2015
Atomic Layer-by-Layer Deposition of Pt on Pd Nanocubes for Catalysts with Enhanced Activity and Durability toward Oxygen Reduction journal May 2014
Ligand-Controlled Co-reduction versus Electroless Co-deposition: Synthesis of Nanodendrites with Spatially Defined Bimetallic Distributions journal November 2014
Atomic Resolution Imaging of Polyhedral PtPd Core–Shell Nanoparticles by Cs-Corrected STEM journal October 2012
“Elastic” Property of Mesoporous Silica Shell: For Dynamic Surface Enhanced Raman Scattering Ability Monitoring of Growing Noble Metal Nanostructures via a Simplified Spatially Confined Growth Method journal April 2015
The Formation of PdC x over Pd-Based Catalysts in Vapor-Phase Vinyl Acetate Synthesis: Does a Pd–Au Alloy Catalyst Resist Carbide Formation? journal May 2004
Chemoselective Hydrogenation of Nitro Compounds with Supported Gold Catalysts journal July 2006
A Different Reaction Pathway for the Reduction of Aromatic Nitro Compounds on Gold Catalysts journal September 2007

Cited By (4)

Metal Species–Encapsulated Mesoporous Silica Nanoparticles: Current Advancements and Latest Breakthroughs journal August 2019
Conversion of confined metal@ZIF-8 structures to intermetallic nanoparticles supported on nitrogen-doped carbon for electrocatalysis journal May 2018
Ultra-stable metal nano-catalyst synthesis strategy: a perspective journal December 2019
Intermetallic compound catalysts: synthetic scheme, structure characterization and catalytic application journal January 2020