Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 2, Issue 30, Pages 12060-12067Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ta01513d
Keywords
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Funding
- Fundamental Research Funds for the Central Universities [lzujbky-2013-234, lzujbky-2013-115]
- National Natural Science Foundation of China [41371003]
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A new type of catalyst based on the ionic liquid (IL) modified fibrous nano-silica material KCC-1, with a high surface area, as the support and Au nanoparticles (NPs) as the active sites (KCC-1-IL/Au), has been successfully prepared through a facile and environmentally-friendly approach and characterized by Fourier transform infrared (FT-IR) spectroscopy, X-ray powder diffraction (XRD). X-ray photoelectron spectroscopy (XPS), transmission electron microscopy ITEM) and high resolution transmission electron microscopy (HRTEM), thermal gravimetric analysis (TGA), elemental analysis and inductively coupled plasma atomic emission spectroscopy (ICP-AES). The synthesized catalyst exhibited high catalytic activity in the reduction of 4-nitrophenol by NaBH4 due to not only the unique dendritic fibrous morphology of the support, which made the active sites accessible, but also the synergistic effect between KCC-1-IL and the small Au NPs. Additionally, KCC-1-IL/Au had good recyclability, mainly attributed to the IL groups, which acted as robust anchors to avoid Au NP leaching from the support. This synthetic method provides a green way to effectively prepare low-cost Au-based catalysts and is promising for the development of other useful materials.
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