NDLI: Synthesis, characterization, and catalytic application of highly ordered mesoporous alumina-carbon nanocomposites

Content Provider	Springer Nature Link
Author	Xu, Jinming Wang, Aiqin Wang, Xiaodong Su, Dangsheng Zhang, Tao
Copyright Year	2011
Abstract	Highly ordered mesoporous carbon-alumina nanocomposites (OMCA) have been synthesized for the first time by a multi-component co-assembly method followed by pyrolysis at high temperatures. In this synthesis, resol phenol-formaldehyde resin (PF resin) and alumina sol were respectively used as the carbon and alumina precursors and triblock copolymer Pluronic F127 as the template. N2-adsorption measurements, X-ray diffraction, and transmission electron microscopy revealed that, with an increase of the alumina content in the nanocomposite from 11 to 48 wt.%, the pore size increased from 2.9 to 5.0 nm while the ordered mesoporous structure was retained. Further increasing the alumina content to 53 wt.% resulted in wormhole-like structures, although the pore size distribution was still narrow. The nanocomposite walls are composed of continuous carbon and amorphous alumina, which allows the ordered mesostructure to be well preserved even after the removal of alumina by HF etching or the removal of carbon by calcination in air. The OMCA nanocomposites exhibited good thermostability below 1000 °C; at higher temperatures the ordered mesostructure partially collapsed, associated with a phase transformation from amorphous alumina into γ-Al$_{2}$O$_{3}$. OMCA-supported Pt catalysts exhibited excellent performance in the one-pot transformation of cellulose into hexitols thanks to the unique surface properties of the nanocomposite.
Starting Page	50
Ending Page	60
Page Count	11
File Format	PDF
ISSN	19980124
Journal	Nano Research
Volume Number	4
Issue Number	1
e-ISSN	19980000
Language	English
Publisher	Tsinghua Press
Publisher Date	2010-10-21
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Nanocomposite mesoporous alumina carbon cellulose Biomedicine general Biotechnology Condensed Matter Physics Atomic/Molecular Structure and Spectra Materials Science Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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