Gold Nanoparticles Supported on Fibrous Silica Nanospheres (KCC‐1) as Efficient Heterogeneous Catalysts for CO Oxidation

Abstract

Gold nanoparticles (Au NPs) of different sizes were supported on fibrous silica nanospheres (KCC‐1) by various methods. The size and the location of the Au NPs on the support were found to depend on the preparation method. The KCC‐1‐supported Au NPs were thoroughly characterized by using HR‐TEM, XRD, X‐ray photoelectron spectroscopy, UV, and Brunauer–Emmett–Teller surface area measurements and were applied in catalysis for the oxidation of CO. The catalytic performance is discussed in relation to the morphological properties of KCC‐1.

Improving the size uniformity of dendritic fibrous nano-silica by a facile one-pot rotating hydrothermal approach

“…Dendritic brous nano-silica (DFNS), [1][2][3][4][5][6] also originally denoted and well-known as KCC-1, [7][8][9][10][11][12][13][14][15][16][17][18][19] possesses unique structural characteristics of three-dimensional (3D) center-radial nanochannels and hierarchical nanopores which give rise to highly accessible internal spaces, open pore channels, large pore volumes, etc. Diverse guest species, such as functional molecules or nano-particles (NPs), could be easily transported through the radial porous architectures to achieve their efficient loading or react with the chemically active sites on these nanochannels.…”

Dendritic Fibrous Nanosilica for Catalysis, Energy Harvesting, Carbon Dioxide Mitigation, Drug Delivery, and Sensing

“…D'Elia and co‐workers slightly modified the protocol for the synthesis of DFNS/Au by replacing the reducing agent (i.e., NaBH 4 ) by CO and citrate . On the basis of the method of catalyst preparation and the reducing agent used, they obtained DFNS loaded with Au NPs of varying sizes and dispersions.…”

Ni@Pd nanoparticles supported on ionic liquid‐functionalized KCC‐1 as robust and recyclable nanocatalysts for cycloaddition of propargylic amines and CO2

“…KCC‐1 is a good candidate for use as a support in the design of efficient nanocatalysts. One unique feature of KCC‐1 is its high surface area, which originates from its fibrous morphology and not from its mesoporous channels (like in SBA‐15 or MCM‐41) . We have demonstrated the usefulness of the fibrous morphology of KCC‐1 compared to conventional ordered mesoporous silica for various applications …”