Site‐Selective Trimetallic Heterogeneous Nanostructures for Enhanced Electrocatalytic Performance

Abstract

Trimetallic Au/Ag/Pt hetero-nanostructures (AAPHNs) with distinctive, designed morphology are synthesized by galvanic replacement reaction and a site-selective strategy. The three metals present on the surface are shown to act synergistically to enhance the electro-catalytic performance and durability for methanol oxidation. The described structural modification of the nanocomposites increases the range of potential applications to include both the oxygen reduction reaction in fuel cells and photocatalysis of the hydrogen evolution reaction.

Au integrated AgPt nanorods for the oxygen reduction reaction in proton exchange membrane fuel cells

“…However, the shiing degree is varied depending on the Au ratio and deposition, which is related to the charge transfer phenomenon due to the interaction of the multi-metallic structure. 40 The electronic interaction such as electron transfer from the metal atoms results in the change of the binding energies, which further conrms the modied electronic properties of the AgPt alloy catalyst because of the Au integration. 41 An MEA test was conducted to evaluate the practical catalytic performance of the as-prepared catalysts toward the ORR in the PEMFC cathode.…”

“…Generally, the binding energies of the main elements of both Au-AgPt NR/C catalysts shi negatively compared to those for the monometallic Pt, Ag and Au (Fig.S4and S5 †). However, the shiing degree is varied depending on the Au ratio and deposition, which is related to the charge transfer phenomenon due to the interaction of the multi-metallic structure 40. The electronic interaction such as electron transfer from the metal atoms results in the change of the binding…”

Symmetric and asymmetric epitaxial growth of metals (Ag, Pd, and Pt) onto Au nanotriangles: effects of reductants and plasmonic properties

“…17 The localized surface plasmon resonances (LSPRs) of Au nanotriangle (Au NT) based BNMNPs depend on their size, composition, and structure. 18 Furthermore, manipulating the spatial distribution of a second metal on Au NTs allows finetuning the plasmonic and chemical properties of these BNMNPs for instance for enhanced photocatalysis 2 and Raman scattering. 19,20 Great progress was made in the wet chemical synthesis of BNMNPs for realizing applications utilizing the plasmonic properties.…”

Design of Thermally Activated Delayed Fluorescent Assistant Dopants to Suppress the Nonradiative Component in Red Fluorescent Organic Light‐Emitting Diodes

“…Recently,m aterials exhibiting thermally activatedd elayedf luorescence (TADF) characteristics have been attracting much attention for organic light-emittingd iodes (OLEDs) duet ot he high external quantume fficiency( EQE) of TADF OLEDs. [1][2][3][4][5][6][7][8] Internal quantum efficiencyo ft he TADF OLEDs can reach 100 %, which is much higher than the 25 %o fc onventionalf luorescent OLEDs(FOLEDs).…”