Gold Nanoparticles Supported on Carbon Nitride: Influence of Surface Hydroxyls on Low Temperature Carbon Monoxide Oxidation

Journal Article · Sun Jan 01 00:00:00 EST 2012 · ACS Catalysis

DOI:https://doi.org/10.1021/cs3001094· OSTI ID:1047014

Singh, Joseph A ^[1]; Dudney, Nancy J ^[1]; Li, Meijun ^[1]; Veith, Gabriel M ^[1]

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1. ORNL

This paper reports the synthesis of 2.5 nm gold clusters on the oxygen free and chemically labile support carbon nitride (C3N4). Despite having small particle sizes and high enough water partial pressure these Au/C3N4 catalysts are inactive for the gas phase and liquid phase oxidation of carbon monoxide. The reason for the lack of activity is attributed to the lack of surface OH groups on the C3N4. These OH groups are argued to be responsible for the activation of CO in the oxidation of CO. The importance of basic OH groups explains the well document dependence of support isoelectric point versus catalytic activity.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Shared Research Equipment Collaborative Research Center
• Sponsoring Organization: USDOE Laboratory Directed Research and Development (LDRD) Program
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1047014
• Journal Information: ACS Catalysis, Vol. 2, Issue 6; ISSN 2155-5435
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CARBON MONOXIDE
CARBON NITRIDES
CATALYSTS
GOLD
OXIDATION
OXYGEN
PARTIAL PRESSURE
PARTICLE SIZE
SYNTHESIS
gold
oxidation
catalyst
carbon nitride