Progress in design and architecture of metal nanoparticles for catalytic applications

Abstract

Over the past few years, nanometer-sized transition metal particles have been intensively pursued as potentially advanced catalysts because their special properties lie between those of single metal atoms and bulk metal. Achieving the accurate control of particle size and overall particle size distribution is one of the most crucial challenges to provide unique chemical and physical properties. We highlight herein our recent progress in the exploitation of promising nanoparticle (NP)-based catalysts designed by precise architecture that enable efficient and selective chemical transformations and can be completely separated and are recyclable. This perspective article consists of the following two specific topics: (i) multifunctional catalysts based on magnetic NPs and (ii) new routes for the preparation of supported metal NPs catalysts. The synthetic strategies described here are simple and general for practical catalyst design, thus allowing a strong protocol for creating various nanostructured catalysts.

Core-shell of FePt@SiO2-Au magnetic nanoparticles for rapid SERS detection

“…2a . Furthermore, oleic acid and oleic amine protecting the surface of FePt nanoparticles would further generate the hydrophobic characteristic of FePt nanoparticles [ 31 ]. The as-synthesized FePt nanoparticles could disperse homogeneously in the nonpolar solvents such as cyclohexane, due to the presence of oleic acid and oleylamine.…”

Synergic Catalysis of PdCu Alloy Nanoparticles within a Macroreticular Basic Resin for Hydrogen Production from Formic Acid

“…The precise control of geometric and electronic effect of bimetallic nanoparticles (NPs), in which the architectural configuration of two metals as alloys or with a core–shell structure, has received considerable attention in attaining superior catalytic activity and selectivity to the monometallic counterparts 1. The coordination of one metal to the other can provide specific new active sites and often alters the electronic properties owing to the unexpected interplay of the neighboring different metals.…”

“…The precise control of geometrica nd electronic effect of bimetallic nanoparticles (NPs), in whicht he architectural configuration of two metalsa sa lloys or with ac ore-shells tructure, has receivedc onsiderable attentioni na ttaining superior catalytic activity and selectivity to the monometallic counterparts. [1] The coordination of one metal to the other can provide specific new active sites and often alters the electronic properties owing to the unexpected interplayo ft he neighboring different metals.I na ddition to such synergic effects, the replacement of the portion of precious noble metal NPs with inexpensive metalsc ontributes to the atomic economy. [2] Thus, the successful synthesis of bimetallic NP with controllable size, shape, and composition plays ac rucial role in designing highly functionalizedcatalysts.…”

Synthesis of a Fe–Ni Alloy on a Ceria Support as a Noble‐Metal‐Free Catalyst for Hydrogen Production from Chemical Hydrogen Storage Materials

“…Although NP‐based catalysts with extremely large surface areas are key components of catalytic activity, their high propensity to aggregate and difficulties with the separation step become troublesome. To overcome these drawbacks, small NPs have generally been used on suitable supports, such as polymers, metal oxides, mesostructured materials, and carbon materials, which also provide unique catalytic functions including site isolation of active metal NPs, cooperative action by several sites, and synergic effects owing to the strong metal‐support interactions 9a. 11…”