DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Surfactant-free syntheses and pair distribution function analysis of osmium nanoparticles

Journal Article · · Beilstein Journal of Nanotechnology

A surfactant-free synthesis of precious metal nanoparticles (NPs) performed in alkaline low-boiling-point solvents has been recently reported. Monoalcohols are here investigated as solvents and reducing agents to obtain colloidal Os nanoparticles by using low-temperature (<100 °C) surfactant-free syntheses. The effect of the precursor (OsCl3 or H2OsCl6), precursor concentration (up to 100 mM), solvent (methanol or ethanol), presence or absence of a base (NaOH), and addition of water (0 to 100 vol %) on the resulting nanomaterials is discussed. It is found that no base is required to obtain Os nanoparticles as opposed to the case of Pt or Ir NPs. The robustness of the synthesis for a precursor concentration up to 100 mM allows for the performance of X-ray total scattering with pair distribution function (PDF) analysis, which shows that 1–2 nm hexagonal close packed (hcp) NPs are formed from chain-like [OsOxCly] complexes.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
Danish National Research Foundation (DNRF) Center for High Entropy Alloy Catalysis (CHEAC); European Union; Marie Sklodowska-Curie Actions (MSCA); USDOE Office of Science (SC), Basic Energy Sciences (BES); Villum Foundation
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1996503
Journal Information:
Beilstein Journal of Nanotechnology, Journal Name: Beilstein Journal of Nanotechnology Vol. 13; ISSN 2190-4286
Publisher:
Beilstein InstituteCopyright Statement
Country of Publication:
United States
Language:
English

References (37)

Colloids for Catalysts: A Concept for the Preparation of Superior Catalysts of Industrial Relevance journal August 2018
Bimetallic Nickel-Iridium and Nickel-Osmium Alloy Nanoparticles and Their Catalytic Performance in Hydrogenation Reactions journal June 2017
Beyond Active Site Design: A Surfactant‐Free Toolbox Approach for Optimized Supported Nanoparticle Catalysts journal February 2021
Microwave Irradiation for the Facile Synthesis of Transition-Metal Nanoparticles (NPs) in Ionic Liquids (ILs) from Metal-Carbonyl Precursors and Ru-, Rh-, and Ir-NP/IL Dispersions as Biphasic Liquid-Liquid Hydrogenation Nanocatalysts for Cyclohexene journal March 2010
Solvent‐Dependent Growth and Stabilization Mechanisms of Surfactant‐Free Colloidal Pt Nanoparticles journal July 2020
Iridium- and Osmium-decorated Reduced Graphenes as Promising Catalysts for Hydrogen Evolution journal April 2015
Controlled Synthesis of Surfactant‐Free Water‐Dispersible Colloidal Platinum Nanoparticles by the Co4Cat Process journal February 2019
Metal Nanoclusters Stabilized with Simple Ions and Solvents—Promising Building Blocks for Future Catalysts journal June 2005
From platinum atoms in molecules to colloidal nanoparticles: A review on reduction, nucleation and growth mechanisms journal December 2020
Surfactant-free colloidal strategies for highly dispersed and active supported IrO2 catalysts: Synthesis and performance evaluation for the oxygen evolution reaction journal September 2021
High nuclearity clusters containing methyl groups. Synthesis and structures of pentaosmium-gold carbonyl cluster compounds journal June 2016
Colloidal nanocrystals for heterogeneous catalysis journal February 2019
Atomically Precise Clusters of Noble Metals: Emerging Link between Atoms and Nanoparticles journal June 2017
Insights from In Situ Studies on the Early Stages of Platinum Nanoparticle Formation journal March 2021
Monovalent Alkali Cations: Simple and Eco-Friendly Stabilizers for Surfactant-Free Precious Metal Nanoparticle Colloids journal July 2019
Atomic Layer Deposition of Osmium journal December 2011
Removal and Utilization of Capping Agents in Nanocatalysis journal September 2013
Osmium Organosol on DNA: Application in Catalytic Hydrogenation Reaction and in SERS Studies journal November 2014
Activity–Stability Trends for the Oxygen Evolution Reaction on Monometallic Oxides in Acidic Environments journal July 2014
Use of Ionic Liquids for the Synthesis of Iron, Ruthenium, and Osmium Nanoparticles from Their Metal Carbonyl Precursors journal April 2008
Dihydroxylation of olefins catalyzed by zeolite-confined osmium(0) nanoclusters: an efficient and reusable method for the preparation of 1,2-cis-diols journal January 2012
First-principles study of borohydride adsorption properties on osmium nanoparticles and surfaces: understanding the effects of facets, size and local sites journal January 2014
Self-assembled wire-like and honeycomb-like osmium nanoclusters (NCs) in DNA with pronounced catalytic and SERS activities journal January 2014
Balancing the galvanic replacement and reduction kinetics for the general formation of bimetallic CuM (M = Ru, Rh, Pd, Os, Ir, and Pt) hollow nanostructures journal January 2016
Controlled fabrication of osmium nanocrystals by electron, laser and microwave irradiation and characterisation by microfocus X-ray absorption spectroscopy journal January 2017
Size effect studies in catalysis: a simple surfactant-free synthesis of sub 3 nm Pd nanocatalysts supported on carbon journal January 2018
Nanofocused synchrotron X-ray absorption studies of the intracellular redox state of an organometallic complex in cancer cells journal January 2019
A repertoire of biomedical applications of noble metal nanoparticles journal January 2019
Discovery of face-centred cubic Os nanoparticles journal January 2020
Ir nanoparticles with ultrahigh dispersion as oxygen evolution reaction (OER) catalysts: synthesis and activity benchmarking journal January 2019
There's no place like real-space: elucidating size-dependent atomic structure of nanomaterials using pair distribution function analysis journal January 2020
UV-induced syntheses of surfactant-free precious metal nanoparticles in alkaline methanol and ethanol journal January 2020
Osmium nanozyme as peroxidase mimic with high performance and negligible interference of O2 journal January 2020
The atomic simulation environment—a Python library for working with atoms journal June 2017
Cluster-mining : an approach for determining core structures of metallic nanoparticles from atomic pair distribution function data journal January 2020
Developments in Platinum-Group Metals as Dual Antibacterial and Anticancer Agents journal November 2019
Surfactant-Free Precious Metal Colloidal Nanoparticles for Catalysis journal October 2021