Ultrastable Hydroxyapatite/Titanium‐Dioxide‐Supported Gold Nanocatalyst with Strong Metal–Support Interaction for Carbon Monoxide Oxidation
- 27 July 2016
- journal article
- research article
- Published by Wiley in Angewandte Chemie-International Edition
- Vol. 55 (36), 10606-10611
- https://doi.org/10.1002/anie.201601823
Abstract
Supported Au nanocatalysts have attracted intensive interest because of their unique catalytic properties. Their poor thermal stability, however, presents a major barrier to the practical applications. Here we report an ultrastable Au nanocatalyst by localizing the Au nanoparticles (NPs) in the interfacial regions between the TiO2 and hydroxyapatite. This unique configuration makes the Au NP surface partially encapsulated due to the strong metal–support interaction and partially exposed and accessible by the reaction molecules. The strong interaction helps stabilizing the Au NPs while the partially exposed Au NP surface provides the active sites for reactions. Such a catalyst not only demonstrated excellent sintering resistance with high activity after calcination at 800 °C but also showed excellent durability that outperforms a commercial three‐way catalyst in a simulated practical testing, suggesting great potential for practical applications.Keywords
Funding Information
- National Science Foundation (CHE-1465057)
This publication has 41 references indexed in Scilit:
- Low-temperature carbon monoxide oxidation catalysed by regenerable atomically dispersed palladium on aluminaNature Communications, 2014
- In Situ Redispersion of Platinum Autoexhaust Catalysts: An On‐Line Approach to Increasing Catalyst Lifetimes?Angewandte Chemie-International Edition, 2008
- In Situ Redispersion of Platinum Autoexhaust Catalysts: An On-Line Approach to Increasing Catalyst Lifetimes?Angewandte Chemie, 2008
- Selective oxidation with dioxygen by gold nanoparticle catalysts derived from 55-atom clustersNature, 2008
- Progress towards the commercial application of gold catalystsTopics in Catalysis, 2007
- Commercial aspects of gold catalysisApplied Catalysis A: General, 2005
- The Potential for Use of Gold in Automotive Pollution Control Technologies: A Short ReviewTopics in Catalysis, 2004
- Gold catalysts prepared by coprecipitation for low-temperature oxidation of hydrogen and of carbon monoxideJournal of Catalysis, 1989
- Novel Gold Catalysts for the Oxidation of Carbon Monoxide at a Temperature far Below 0 °CChemistry Letters, 1987
- Vapor phase hydrochlorination of acetylene: Correlation of catalytic activity of supported metal chloride catalystsJournal of Catalysis, 1985