Ligand-Decorated Metal Nanoparticles for Catalysis

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Catalysis in Organic and Polymer Chemistry".

Deadline for manuscript submissions: closed (31 August 2024) | Viewed by 1012

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Istituto di Chimica dei Composti Organometallici (CNR-ICCOM), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
Interests: homogeneous cayalysis; heterogeneous catalysis; aerobic alcohol oxidation; characterization of nanostructured materials by X-ray diffraction
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Special Issue Information

Dear Colleagues,

Small organic molecules or macromolecules bearing suitable functional groups can be exploited to control the size of metal nanoparticles (NPs) during their synthesis and in the course of their application in catalytic reactions. The synthesis of such ligand-stabilized NPs, containing a single or two types of metal atoms, can be achieved by the reduction of well-defined metal complexes, the reduction of metal precursors in the presence of the chosen ligand, or by the post-functionalization of metal NPs with the desired ligand. The ligand, coordinated to surface atoms of the metal NP, not only controls the size and shape of the NP during the real catalytic process but may actively participate in key steps during the catalytic substrate conversion.

This Special Issue welcomes original research articles and reviews dealing with any aspect concerning the synthesis, characterization, and catalytic application of ligand-stabilized NPs. Topics of particular interest include the following:

  • The synthesis and characterization of ligand and macroligand-stabilized metal NPs.
  • The application of well-defined metal NPs consisting of one or more different kinds of metal atoms for any kind of catalytic substrate conversion.
  • Mechanistic studies of catalytic reactions carried out by means of ligand-decorated NPs.

If you would like to submit papers to this Special Issue or have any questions, please contact the in-house editor, Mr. Ives Liu ([email protected]).

Dr. Werner Oberhauser
Guest Editor

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Keywords

  • metal nanoparticles
  • heterogenous catalysis
  • ligands
  • bifunctional catalysts
  • reaction mechanism
  • nanoparticle’s surface characterization

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Published Papers (1 paper)

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Research

21 pages, 9748 KiB  
Article
Molecular TiO2 Modifications of Supported PPh3-Capped Pd Nanocatalysts for CO2 Hydrogenation into Formates
by María Dolores Fernández-Martínez and Cyril Godard
Catalysts 2024, 14(8), 487; https://doi.org/10.3390/catal14080487 - 29 Jul 2024
Viewed by 754
Abstract
TiO2-supported Pd NPs-based materials were prepared following two distinct approaches: For the first set of materials 18, modification of the TiO2 support was performed prior to Pd NPs deposition, while the second set (915 [...] Read more.
TiO2-supported Pd NPs-based materials were prepared following two distinct approaches: For the first set of materials 18, modification of the TiO2 support was performed prior to Pd NPs deposition, while the second set (915) was synthesized by deposition of modifiers over pre-synthesized Pd-PPh3/TiO2. These catalysts were applied in the hydrogenation of CO2 to formate, and their performance was compared with that of the unmodified Pd-PPh3/TiO2. Modification of the TiO2 support by organosilanes provided a beneficial effect in catalysis compared with the catalyst containing unmodified TiO2 or TiO2 modified by organophosphonic acids. In contrast, in most cases, the deposition of modifiers over previously synthesized Pd NPs supported on TiO2 was not beneficial to the activity of the catalyst. Interestingly, upon recycling, the first set of catalysts suffered a rapid decrease in activity, while the anchoring of modifiers over previously formed Pd NPs showed an improved stability (TON > 500 after the third recycling). Full article
(This article belongs to the Special Issue Ligand-Decorated Metal Nanoparticles for Catalysis)
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