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• W2006751504 endingPage "65" @default.
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• W2006751504 abstract "A novel, dandelion-like fibrous nano-silica catalyst ([email protected]/KCC-1) has been synthesized by modifying fibrous nano-silica (KCC-1) with [email protected] core–shell nanoparticles (NPs). KCC-1 was prepared using a hydrothermal method and has a dandelion-like shape, high surface area, and easy accessibility; KCC-1 can also be functionalized with 3-mercaptopropyltriethoxysilane. The mercaptopropyl groups on the fibers act as robust anchors for the immobilization of [email protected] NPs, thus preventing the aggregation of the [email protected] NPs. We investigated the catalytic performance of the [email protected]/KCC-1 nanocatalyst by reducing 4-nitrophenol to 4-aminophenol in the presence of NaBH4 as a probe reaction. The resulting [email protected]/KCC-1 nanocatalyst exhibited superior catalytic activity to [email protected] NPs, which may be attributed to the high accessibility of the KCC-1 support material. To some extent, it also may be due to the poor aggregation of [email protected] NPs on the KCC-1 nano-silica support. The [email protected]/KCC-1 nanocatalyst also showed high catalytic activity when used to reduce 2-nitroaniline. It is noteworthy that using Ni cores to fabricate the active sites [email protected] NPs resulted in a lower amount of Au needed than is typical, because most of the Au-NPs catalyzed reactions occur on the surfaces of the NPs. In addition, the Ni cores give the [email protected]/KCC-1 nanocatalyst superparamagnetic properties that increase its ease of recovery by a powerful magnet, allowing for it to be reused. The abovementioned approach based on fibrous KCC-1 and [email protected] NPs provided a useful platform for the fabrication of noble-metal-based nanocatalysts with easy accessibility and a low cost, which may allow for an efficient green alternative for various catalytic reductions." @default.
• W2006751504 created "2016-06-24" @default.
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• W2006751504 date "2014-12-01" @default.
• W2006751504 modified "2023-10-08" @default.
• W2006751504 title "Fibrous nano-silica containing immobilized Ni@Au core–shell nanoparticles: A highly active and reusable catalyst for the reduction of 4-nitrophenol and 2-nitroaniline" @default.
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• W2006751504 doi "https://doi.org/10.1016/j.molcata.2014.08.002" @default.
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