The controlled disassembly of mesostructured perovskites as an avenue to fabricating high performance nanohybrid catalysts

Yuan Wang, Hamidreza Arandiyan (), Hassan A. Tahini, Jason Scott, Xin Tan, Hongxing Dai, Julian D. Gale, Andrew L. Rohl, Sean C. Smith () and Rose Amal ()
Additional contact information
Yuan Wang: Particles and Catalysis Research Group, School of Chemical Engineering, The University of New South Wales
Hamidreza Arandiyan: Particles and Catalysis Research Group, School of Chemical Engineering, The University of New South Wales
Hassan A. Tahini: Integrated Materials Design Centre (IMDC), School of Chemical Engineering, The University of New South Wales
Jason Scott: Particles and Catalysis Research Group, School of Chemical Engineering, The University of New South Wales
Xin Tan: Integrated Materials Design Centre (IMDC), School of Chemical Engineering, The University of New South Wales
Hongxing Dai: Beijing Key Laboratory for Green Catalysis and Separation, and Laboratory of Catalysis Chemistry and Nanoscience, Beijing University of Technology
Julian D. Gale: Curtin Institute for Computation, Curtin University
Andrew L. Rohl: Curtin Institute for Computation, Curtin University
Sean C. Smith: Integrated Materials Design Centre (IMDC), School of Chemical Engineering, The University of New South Wales
Rose Amal: Particles and Catalysis Research Group, School of Chemical Engineering, The University of New South Wales

Nature Communications, 2017, vol. 8, issue 1, 1-7

Abstract: Abstract Versatile superstructures composed of nanoparticles have recently been prepared using various disassembly methods. However, little information is known on how the structural disassembly influences the catalytic performance of the materials. Here we show how the disassembly of an ordered porous La0.6Sr0.4MnO3 perovskite array, to give hexapod mesostructured nanoparticles, exposes a new crystal facet which is more active for catalytic methane combustion. On fragmenting three-dimensionally ordered macroporous (3DOM) structures in a controlled manner, via a process that has been likened to retrosynthesis, hexapod-shaped building blocks can be harvested which possess a mesostructured architecture. The hexapod-shaped perovskite catalyst exhibits excellent low temperature methane oxidation activity (T90%=438 °C; reaction rate=4.84 × 10−7 mol m−2 s−1). First principle calculations suggest the fractures, which occur at weak joints within the 3DOM architecture, afford a large area of (001) surface that displays a reduced energy barrier for hydrogen abstraction, thereby facilitating methane oxidation.

Date: 2017
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/ncomms15553 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15553

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/ncomms15553

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().