CO oxidation catalyzed by silver nanoclusters: mechanism and effects of charge.
@article{Tang2012COOC,
title={CO oxidation catalyzed by silver nanoclusters: mechanism and effects of charge.},
author={Dianyong Tang and Zhong Chen and Jianping Hu and Guofeng Sun and Shen-Zhuang Lu and Changwei Hu},
journal={Physical chemistry chemical physics : PCCP},
year={2012},
volume={14 37},
pages={
12829-37
}
}The mechanism of the CO oxidation promoted by a neutral Ag(55) cluster was investigated extensively, using density functional theory calculations. The CO oxidation process catalyzed by anionic and cationic Ag(55) clusters was also studied, to clarify the effects of the charge state. The Eley-Rideal (ER) and Langmuir-Hinshelwood (LH) mechanisms were discussed in detail. Six reaction pathways were found for the Ag(55)-mediated CO oxidation. It was found that the ER mechanism competed with the LH…
38 Citations
Theoretical investigation on CO oxidation catalyzed by a copper nanocluster
- Chemistry
- 2013
The mechanism of CO oxidation catalyzed by a 55-atom copper nanocluster was studied at the BVP86/DNP level with all-electron scalar relativity. Eley–Rideal (ER) and Langmuir–Hinshelwood (LH)…
CO Oxidation by Molecular and Atomic Oxygen on Ag(100): A Density Functional Theory Study
- Chemistry
- 2017
CO oxidation by molecular and atomic oxygen has been studied using Ag38 and Ag29 cluster models at the DFT-PW91PW91/[LANL2DZ, 6-31G(d)] level. The calculated results show that the adsorptions of O…
Improved performance of Mn ion substituted Ceria nanospheres for water gas shift reaction: Influence of preparation conditions
- Chemistry, Materials ScienceMaterials Research Bulletin
- 2018
An effective approach for tuning catalytic activity of C3N nanosheets: Chemical-doping with the Si atom.
- ChemistryJournal of molecular graphics & modelling
- 2019
Catalytic role of pre-adsorbed CO in platinum-based catalysts: the reduction of SO2 by CO on PtlAum(CO)n.
- ChemistryPhysical chemistry chemical physics : PCCP
- 2013
The mechanism of the excellent catalytic properties of the bimetallic complex catalysts revealed is the strong coupling between the C-2p and metal 5d orbitals, which is found to be very effective in not only reducing the activation energy, but also preventing poisoning by sulfur.
CO oxidation by the atomic oxygen on silver clusters: structurally dependent mechanisms generating free or chemically bonded CO2.
- ChemistryPhysical chemistry chemical physics : PCCP
- 2016
The structurally dependent mechanisms and the formation of chemically bonded CO2 revealed in this work help to catch a glimpse of some important processes and intermediates on real silver catalysts.
Temperature-dependent catalytic reduction of 4-nitrophenol based on silver nanoclusters protected by a thermo-responsive copolymer ligand
- Chemistry, Materials Science
- 2016
Well-defined silver nanoclusters (NCs) were prepared by using a temperature-responsive copolymer ligand (CPL) containing 5-(2-methacryloylethyloxymethyl)-8-quinolinol (MQ) and N-isopropylacrylamide…
Reactivity and Catalytic Activity of Hydrogen Atom Chemisorbed Silver Clusters.
- ChemistryThe journal of physical chemistry. A
- 2015
The results affirm that the hydrogen atom chemisorption leads to enhancement in the binding energy of the adsorbed O2 molecule on the inert silver clusters and show low reaction barriers and high heat of formation of the final products for the environmentally important CO oxidation reaction as compared to the parent catalytically inactive clusters.
CO Oxidation Prefers the Eley-Rideal or Langmuir-Hinshelwood Pathway: Monolayer vs Thin Film of SiC.
- ChemistryACS applied materials & interfaces
- 2016
Using the first-principles approach, the electronic and chemical properties of wurtzite silicon carbide monolayer and thin film structures were investigated and substantiated their catalytic activity toward CO oxidation and it was observed that the ER mechanism is preserved onSiC/G system, while CO oxidation on the SiC/Ag(111) system follows the LH mechanism.
References
SHOWING 1-10 OF 69 REFERENCES
CO oxidation on unsupported Au55, Ag55, and Au25Ag30 nanoclusters.
- ChemistryThe Journal of chemical physics
- 2008
A catalytic reaction path with activation barriers of less than 0.5 eV for CO oxidation on the neutral and unsupported icosahedral nanoclusters of Au(55), Ag( 55), and Au(25)Ag(30) is demonstrated.
CO Oxidation on Positively and Negatively Charged Ag13 Nanoparticles
- Chemistry
- 2011
Utilizing density functional theory calculations and a modified kinetic model, we report the CO oxidation reactivity of negatively and positively charged isolated cuboctahedron (COh) and icosahedron…
First‐principle calculations on CO oxidation catalyzed by a gold nanoparticle
- Chemistry, PhysicsJ. Comput. Chem.
- 2010
Calculations suggest that the CO oxidation catalyzed by the Au29 nanoparticle is likely to occur at or even below room temperature and gain insights into high‐catalytic activity of the gold nanoparticles.
Oxidation Behavior of CO Catalyzed by Several Decahedral Au Clusters: Role of Cluster Stability and Electric Field
- Chemistry, Physics
- 2010
First-principles calculations are performed to study the adsorption and oxidation of CO on three decahedral Au clusters with the stability sequence of Au146 > Au75 > Au101. Our calculations suggest…
Promotion of CO Oxidation on Bimetallic Au―Ag(110) Surfaces: A Combined Microscopic and Theoretical Study
- Chemistry
- 2009
The clean-off reaction of AgO added rows by CO on Ag(110) and Au/Ag(110) bimetallic surfaces was studied by scanning tunneling microscopy (STM) and compared with density functional theory (DFT). This…
Communication: CO oxidation by silver and gold cluster cations: identification of different active oxygen species.
- ChemistryThe Journal of chemical physics
- 2011
The comparative study reveals that for both gold and silver cations carbon dioxide is formed on the clusters, however, whereas in the case of Au(3)(+) the cluster itself acts as reactive species that facilitates the formation of CO(2) from N( 2)O and CO, for silver the oxidized clusters Ag(3)O(x)(+) (n=1-3) are identified as active in the CO oxidation reaction.
A comparative theoretical study of the catalytic activities of Au2- and AuAg- dimers for CO oxidation
- ChemistryJournal of Molecular Modeling
- 2011
The present results provide valuable information for understanding the higher catalytic activity of Au-Ag nanoparticles and nanoalloys for low-temperature CO oxidation than either pure metallic catalyst.
Low temperature CO oxidation over Ag/SBA-15 nanocomposites prepared via in-situ “pH-adjusting” method
- Chemistry
- 2011
DFT Insight into CO Oxidation Catalyzed by Gold Nanoclusters: Charge Effect and Multi-State Reactivity
- Chemistry, Physics
- 2011
All-electron relativistic density functional theory (DFT) calculations on CO oxidation catalyzed by 55-atom gold nanoclusters (Au55) have revealed that all of neutral, anionic, and cationic Au55…