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Cathodic Corrosion of a Bulk Wire to Nonaggregated Functional Nanocrystals and Nanoalloys
Feng, Jicheng1; Chen, Dong3; Sediq, Ahmad S.2; Romeijn, Stefan2; Tichelaar, Frans D.4; Jiskoot, Wim2; Yang, Jun3; Koper, Marc T. M.1

A key enabling step in leveraging the properties of nanoparticles (NPs) is to explore new, simple, controllable, and scalable nanotechnologies for their syntheses. Among "wet" methods, cathodic corrosion has been used to synthesize catalytic aggregates with some control over their size and preferential faceting. Here, we report on a modification of the cathodic corrosion method for producing a range of nonaggregated nanocrystals (Pt, Pd, Au, Ag, Cu, Rh, Ir, and Ni) and nanoalloys (Pt50Au50, Pd50Au50, and AgxAu100-x) with potential for scaling up the production rate. The method employs poly(vinylpyrrolidone) (PVP) as a stabilizer in an electrolyte solution containing nonreducible cations (Na+, Ca2+), and cathodic corrosion of the corresponding wires takes place in the electrolyte under ultrasonication. The ultrasonication not only promotes particle-PVP interactions (enhancing NP dispersion and diluting locally high NP concentration) but also increases the production rate by a factor of ca. 5. Further increase in the production rate can be achieved through parallelization of electrodes to construct comb electrodes. With respect to applications, carbon-supported Pt NPs prepared by the new method exhibit catalytic activity and durability for methanol oxidation comparable or better than the commercial benchmark catalyst. A variety of Ag AgxAu100-x nanoalloys are characterized by ultraviolet-visible absorption spectroscopy and high-resolution transmission electron microscopy. The protocol for NP synthesis by cathodic corrosion should be a step toward its further use in academic research as well as in its practical upscaling.

KeywordCathodic Corrosion Alloy Nanoparticles Comb Electrodes Methanol Oxidation Reaction Electrocatalysis Optical Properties
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
WOS KeywordGold-silver Alloy ; Induced Electrochemical Synthesis ; Metal-oxide Nanocrystals ; Nanoparticle Synthesis ; Addressing Challenges ; Refractive-index ; Phase ; Copper ; Oxidation ; Nanocubes
WOS Research AreaScience & Technology - Other Topics ; Materials Science
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary
Funding OrganizationNWO STW(00174331) ; National Science Foundation of China(21573240)
WOS IDWOS:000428356800039
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Document Type期刊论文
Affiliation1.Leiden Univ, Leiden Inst Chem, Catalysis & Surface Chem, NL-2300 RA Leiden, Netherlands
2.Leiden Univ, Leiden Acad Ctr Drug Res, Div BioTherapeut, NL-2300 RA Leiden, Netherlands
3.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
4.Delft Univ Technol, Kavli Inst NanoSci, Lorentzweg 1, NL-2628 CJ Delft, Netherlands
Recommended Citation
GB/T 7714
Feng, Jicheng,Chen, Dong,Sediq, Ahmad S.,et al. Cathodic Corrosion of a Bulk Wire to Nonaggregated Functional Nanocrystals and Nanoalloys[J]. ACS APPLIED MATERIALS & INTERFACES,2018,10(11):9532-9540.
APA Feng, Jicheng.,Chen, Dong.,Sediq, Ahmad S..,Romeijn, Stefan.,Tichelaar, Frans D..,...&Koper, Marc T. M..(2018).Cathodic Corrosion of a Bulk Wire to Nonaggregated Functional Nanocrystals and Nanoalloys.ACS APPLIED MATERIALS & INTERFACES,10(11),9532-9540.
MLA Feng, Jicheng,et al."Cathodic Corrosion of a Bulk Wire to Nonaggregated Functional Nanocrystals and Nanoalloys".ACS APPLIED MATERIALS & INTERFACES 10.11(2018):9532-9540.
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