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Enhanced AuPd Activity in the Direct Synthesis of Hydrogen Peroxide using Nanostructured Titanate Nanotube Supports
Author(s) -
TorrenteMurciano Laura,
He Qian,
Hutchings Graham J.,
Kiely Christopher J.,
Chadwick David
Publication year - 2014
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201402361
Subject(s) - materials science , nanoparticle , hydrogen peroxide , nanotechnology , nanotube , chemical engineering , metal , titanate , catalysis , carbon nanotube , chemistry , organic chemistry , composite material , ceramic , metallurgy , engineering
Nanostructured supports with tubular morphologies can impose one dimensional external constraints to supported metal nanoparticles affording small sizes (<2 nm) with high dispersion. Specifically, the curvature and chemical environment of the external nanotube surface appears to play a key role in determining the morphology and stability of the supported AuPd nanoparticles. This strategy is presented as an alternative nanoparticle stabilisation approach rather than encapsulation within porous structures or the use of organic capping agents with associated diffusional limitations. Here, we report the enhancement achieved in the AuPd alloy reactivity for the direct synthesis of hydrogen peroxide when supported on titanate nanotubes (Ti‐NT) with a productivity above 11 600 mol H 2 O 2 kg metal −1 h −1 afforded by the high metal–support interaction.