Composition-dependent electrocatalytic activity of AuPd alloy nanoparticles prepared via simultaneous sputter deposition into an ionic liquid

2013 ◽  
Vol 15 (19) ◽  
pp. 7286 ◽  
Author(s):  
Masanori Hirano ◽  
Kazuki Enokida ◽  
Ken-ichi Okazaki ◽  
Susumu Kuwabata ◽  
Hisao Yoshida ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Electrocatalytic Activity ◽  
Sputter Deposition ◽  
Alloy Nanoparticles

Electrocatalytic Activity of Bimetallic Pd-Au Particle Films Prepared by Sequential Sputter Deposition of Pd and Au onto Hydroxyl-functionalized Ionic Liquid

2017 ◽  
Vol 46 (7) ◽  
pp. 956-959 ◽  
Author(s):  
Takashi Hamada ◽  
Daisuke Sugioka ◽  
Tatsuya Kameyama ◽  
Susumu Kuwabata ◽  
Tsukasa Torimoto
Keyword(s):  
Ionic Liquid ◽  
Electrocatalytic Activity ◽  
Sputter Deposition ◽  
Functionalized Ionic Liquid

scholarly journals Upscaling nanoparticle synthesis by sputter deposition in ionic liquids

2021 ◽  
Vol 23 (6) ◽  
Author(s):  
M. Meischein ◽  
A. Ludwig
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Nanoparticle Synthesis ◽  
Sputter Deposition ◽  
Capping Agent ◽  
Cu Nanoparticles ◽  
Long Time ◽  
Spherical Diameter ◽  
Nanoparticle Fabrication

AbstractUpscaling of nanoparticle fabrication by sputtering into an ionic liquid is shown for the example of Cu. Long-time sputtering (24 h) into a large amount (50 mL) of the ionic liquid 1-butyl-3-methylimidazolium bis-(trifluoromethylsulfonyl)imide [Bmim][(Tf)2 N] yields an amount of approximately 1 g Cu nanoparticles (mean spherical diameter (2.6 ± 1.1) nm), stabilized in ionic liquid without agglomerations. Extraction of Cu nanoparticles from the stabilizing ionic liquid was performed with the capping agent hexadecylamine. Extracted particles could be redispersed in other solvents, thus enabling applications of sputtered nanoparticles beyond ionic liquids.

scholarly journals Highly Sensitive Detection of Dopamine at Ionic Liquid Functionalized RGO/ZIF-8 Nanocomposite-Modified Electrode

2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Lei Cheng ◽  
Youjun Fan ◽  
Xingcan Shen ◽  
Hong Liang
Keyword(s):  
Ionic Liquid ◽  
Modified Electrode ◽  
Electrocatalytic Activity ◽  
Electrochemical Impedance ◽  
Modified Electrodes ◽  
Differential Pulse ◽  
Zeolitic Imidazolate Framework ◽  
Response Range ◽  
Highly Sensitive ◽  
Highly Sensitive Detection

A hybrid and hierarchical nanocomposite was successfully prepared by the growth of zeolitic imidazolate framework-8 (ZIF-8) on the template of ionic liquid (IL, [Bmim][BF4]) functionalized reduced graphene oxide (IL-RGO). The structure and morphology of the IL-RGO/ZIF-8 nanocomposite were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectrometer (FTIR), and Raman spectroscopy. The results showed that RGO sheets were refrained from restacking by IL, and ZIF-8 nanoparticles grew well on the surface of IL-RGO. Owing to the synergistic effect from large surface area and excellent electrocatalytic activity of ZIF-8 and great electrical conductivity of IL-RGO, a highly sensitive sensor for dopamine (DA) can be obtained. IL-RGO/ZIF-8-modified electrode exhibits good electrocatalytic activity and electroconductive properties towards DA which were investigated by cyclic voltammetry (CV), differential pulse voltammetry (DPV), and electrochemical impedance spectroscopy (EIS). Compared with bare or IL-RGO-modified electrodes, the IL-RGO/ZIF-8-modified electrode effectively depressed the oxidation overpotential of DA. The linear response range of DA was from 1.0×10−7 to 1.0×10−4 mol/L with a low detection of limit 3.5×10−8 mol/L. In addition, the sensor was shown to provide satisfactory stability for the determination of DA.

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