noble-metal nanoparticleselectrocatalysisPercolation dealloying of multimetallic alloys entangles the selective dissolution of the less-noble elements with nanoscale ... YWH Li - 《Nano Letters》 被引量: 0发表: 2016年 Optical properties and electrochemical dealloying of Gold-Silver alloy nanoparticles imm...
Dealloying is already being used as a method for manufacturing structured binary and multicomponent metal nanoparticles. In such a process, one of the metals, e.g. the less noble one, is selectively removed from the alloy, while the atoms of the more noble metal diffuse and reorganize into ...
Dealloying is a common corrosion process during which an alloy is ‘parted’ by the selective dissolution of the most electrochemically active of its elements. This process results in the formation of a nanoporous sponge composed almost entirely of the more noble alloy constituents1. Although conside...
Optimization and atomistic understanding of thedealloying process of non-noble metal rich Pt bimetallicnanoparticles is key to further improve their activity and stability for the oxygen reduction reaction (ORR)[1-8].Here, we synthesized two well alloyed and near-monodisperse PtNi3 alloy nanoparticle...
alloy layer in a 0.2 or 2 M NaOH solution. Further electrooxidation of the dealloyed foils in a Fe3+-containing alkaline electrolyte results in the formation of an Fe-doped Ni(OH)2layer on the surface. The as-fabricated catalysts are self-supporting and have good performance in OER ...
Most of the NWs-based SERS substrate fabrications have been carried out using either silver nanowires or silver-coated nanowire sur- faces6–10. For example, a reproducible SERS-based platform capable of bacteria detection was reported using silver nanoparticles (Ag NPs)-decorated silicon nanowires6...
Gold-silver alloy nanoparticles (NPs) capped with adenosine 5'-triphosphate were synthesized by borohydride reduction of dilute aqueous metal precursors. High-resolution transmission electron microscopy showed the as-synthesized particles to be spherical with average diameters ~4 nm. Optical properties were...
Dealloying treatment is one way to make a Pt rich shell on Pt alloy through chemically depleting the surface of non-noble metals. However, this treatment usually causes more than half of the non-noble metal to be lost before the catalyst forms an effective protective surface. This process ...
core-shell architectured nanoporous copper@cuprous oxide nanonetworks (C-S NPC@Cu2O NNs) by chemical dealloying of melt-spun Al 37 at.% Cu alloy in an oxygen-rich alkaline solution at room temperature, which possesses superior photocatalytic activity towards photodegradation of methyl orange (MO)....
of molten metal as a dealloying agent. Fundamentally, LMD is based on the difference of mixing enthalpies between elements of the parent alloy and dealloying agent; in contrast, MSD depends on the redox potential difference between the constituents within the parent alloy in the molten salt ...