One-Pot Protocol for Au-Based Hybrid Magnetic Nanostructures via a Noble-Metal-Induced Reduction Process

摘要

In the past decades, catalysts based on Au nanoparticles havenattracted considerable attention.n1,2nHowever, because of the limitednreserves of Au materials, it is urgent to reduce their usage. As wenknow, complex nanoobjects containing two or more different materialsnin the same nanoparticle can not only combine properties of thenindividual constituents but also show unique and superior propertiesndifferent from ordinary materials.n3 10nTherefore, hybrid nanocrystalsnconsisting of Au and non-noble metals (particularly inexpensive first-nrow transition metals) may offer opportunities for reducing Au usagenand the overall cost of catalysts.n11,12nFurthermore, when magneticnheterometals (e.g., Co, Ni) are incorporated into Au nanoparticles, wencan obtain Au-based magnetic heterostructured nanocatalysts.n13 15nMagnetic catalysts can be reclaimed via magnetic separation after use,nwhich would be very significant in preventing waste of Au materials.nAt present, although various methods have been developed for thenpreparation of hybrid nanocrystals, including core shell particles withncontrolled shapes,n16 22nexploiting a new idea for their facile andngeneral synthesis still remains great challenge.