Nanoparticles-in-concavities as efficient nanocatalysts for carbon dioxide reforming of methane to hydrogen and syngas

Deng, Jie, Chu, Wei, Wang, Bo, Xu, Zhenxin, Yang, Wen and Zhao, Xiu Song (2016) Nanoparticles-in-concavities as efficient nanocatalysts for carbon dioxide reforming of methane to hydrogen and syngas. Catalysis Science & Technology, 6 12: 4565-4576. doi:10.1039/c5cy01974e


Author Deng, Jie
Chu, Wei
Wang, Bo
Xu, Zhenxin
Yang, Wen
Zhao, Xiu Song
Title Nanoparticles-in-concavities as efficient nanocatalysts for carbon dioxide reforming of methane to hydrogen and syngas
Journal name Catalysis Science & Technology   Check publisher's open access policy
ISSN 2044-4753
2044-4761
Publication date 2016-02-09
Year available 2016
Sub-type Article (original research)
DOI 10.1039/c5cy01974e
Open Access Status Not Open Access
Volume 6
Issue 12
Start page 4565
End page 4576
Total pages 12
Place of publication Cambridge, United Kingdom
Publisher Royal Society of Chemistry
Collection year 2017
Language eng
Formatted abstract
The synergy between ceria and loaded metal nanocrystals (NCs) greatly promotes the catalytic properties for many reactions. Nevertheless, the clear relevance of structures to properties in catalytic systems is hard to establish in that the catalysts studied either featured unstable microstructures or were too heterogeneous. Herein, we show both the facile tool of NC assembly to derive stable and efficient catalytic materials, in which the metal NCs are tailored in terms of their spatial positioning on the nanometer scale (i.e.; entrapped in the internal concave ceria surface or deposited on the external convex ceria surface), and how to probe their structure-function relationship. The performance for producing renewable energy sources from hazardous greenhouse gases on a NCs-in-concavities structure is distinct from that on a NCs-on-convexities configuration, elucidating a pivotal impact by the spatial positioning. The current investigation suggests that there exists a clear relationship between the surface adsorbate bonding strength/type and the catalytic properties in reforming CO2/CH4 to hydrogen energy and syngas. Control over the bonding strength/type and activation mechanism of the adsorbates on the catalyst surfaces through changing the support surface curvature orientation is indicated to be a potential strategy for modulating the reaction activity. The insights focus on grasping the surface chemistry of the ceria surface curvature in optimizing the catalysts and can be enlightening for rationally exploring other state-of-the-art heterogeneous nanomaterials.
Keyword Nanocatalysts
Metal nanocrystals
Metal NC
Carrier
Adsorbates
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
HERDC Pre-Audit
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 0 times in Thomson Reuters Web of Science Article
Scopus Citation Count Cited 0 times in Scopus Article
Google Scholar Search Google Scholar
Created: Sun, 17 Jul 2016, 00:25:54 EST by System User on behalf of Learning and Research Services (UQ Library)