The catalytic performance of supported metal catalysts is closely related to their structure. While Pt-based catalysts are widely used in many catalytic reactions because of their exceptional intrinsic activity, they tend to deactivate in high-temperature reactions, requiring a tedious and expensive regeneration process. The strong metal-support interaction (SMSI) is a promising strategy to improve the stability of supported metal nanoparticles, but often at the price of the activity due to either the coverage of the active sites by support overlay and/or the too-strong metal-support bonding. Herein, we newly constructed a supported Pt cluster catalyst by introducing FeO into hydroxyapatite (HAP) support to fine-tune the SMSIs. The catalyst exhibited not only high catalytic activity but also sintering resistance, without deactivation in a 100 h test for catalytic CO oxidation. Detailed characterizations reveal that FeO introduced into HAP weaken the strong covalent metal-support interaction (CMSI) between Pt and FeO while simultaneously inhibiting the oxidative strong metal-support interaction (OMSI) between Pt and HAP, giving rise to both high activity and thermal stability of the supported Pt clusters.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acsami.4c02521 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Strong Metal-Support Interaction Facilitates the Separation of Electron-Hole Pairs at Au/BiOCl Interface: Insight from Quantum Dynamics.
J Phys Chem Lett
January 2025
Inner Mongolia Key Laboratory of Rare Earth Catalysis, College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, People's Republic of China.
Focusing on Au/BiOCl, we investigated the effects of the metal-support interaction (MSI) on the photogenerated charge carrier separation using nonadiabatic molecular dynamic simulations combined with time-domain density functional theory. Our results show that the time scales of electron transfer from the Au cluster to BiOCl are distinct depending on the intensity of MSI. Oxygen vacancy (OV) can enhance the interaction between the Au cluster and BiOCl, leading to a stronger nonadiabatic (NA) coupling in Au/BiOCl with an OV system compared to that in a pristine Au/BiOCl system.
View Article and Find Full Text PDFGenerating Strong Metal-Support Interaction and Oxygen Vacancies in Cu/MgAlO Catalysts by CO Treatment for Enhanced CO Hydrogenation to Methanol.
ACS Appl Mater Interfaces
January 2025
Department of Chemical Engineering, and Guangdong Provincial Key Laboratory of Materials and Technologies for Energy Conversion (MATEC), Guangdong Technion Israel Institute of Technology (GTIIT), Guangdong 515063, China.
Strong metal-support interactions (SMSIs) are essential for optimizing the performance of supported metal catalysts by tuning the metal-oxide interface structures. This study explores the hydrogenation of CO to methanol over Cu-supported catalysts, focusing on the synergistic effects of strong metal-support interaction (SMSI) and oxygen vacancies introduced by the CO treatment to the catalysts on the catalytic performance. Cu nanoparticles were immobilized on Mg-Al layered double oxide (LDO) supports and modified with nitrate ions to promote oxygen vacancy generation.
View Article and Find Full Text PDFConfined Flash Pt/WC inside Carbon Nanotubes for Efficient and Durable Electrocatalysis.
Nano Lett
January 2025
School of Environment, Tsinghua University, Beijing 100084, China.
Exploiting cost-effective hydrogen evolution reaction (HER) catalysts is crucial for sustainable hydrogen production. However, currently reported nanocatalysts usually cannot simultaneously sustain high catalytic activity and long-term durability. Here, we report the efficient synthesis and activity tailoring of a chainmail catalyst, isolated platinum atom anchored tungsten carbide nanocrystals encapsulated inside carbon nanotubes (Pt/WC@CNTs), by confined flash Joule heating technique.
View Article and Find Full Text PDFSimultaneous Coproduction of Xylonic Acid and Xylitol: Leveraging In Situ Hydrogen Generation and Utilization from Xylose.
ChemSusChem
December 2024
Green Carbon Research Center, Korea Research Institute of Chemical Technology, Daejeon, 34114, Republic of Korea.
Pentose oxidation and reduction, processes yielding value-added sugar-derived acids and alcohols, typically involve separate procedures necessitating distinct reaction conditions. In this study, a novel one-pot reaction for the concurrent production of xylonic acid and xylitol from xylose is proposed. This reaction was executed at ambient temperature in the presence of a base, eliminating the need for external gases, by leveraging Pt-supported catalysts.
View Article and Find Full Text PDFRegulation of Metal-Support Interaction in Single-Atom Catalysis.
Small
December 2024
Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, 313001, P. R. China.
In recent years, single-atom catalysts (SACs) with separated active centers and high atom utilization have grown significantly as a significant area of catalytic research. In catalytic applications, SACs of various kinds have demonstrated exceptional performance, so the study of the catalytic mechanism of SACs provides a clearer direction for the preparation of catalysts with high performance. Strong linkages between the single atoms and the support are necessary to overcome the tendency of single atoms to aggregate into clusters, which is called metal-support interaction (MSI).
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!