Synthesis of Pd–Ru solid-solution nanoparticles by pulsed plasma in liquid method

Mashimo, Tsutomu; Tamura, Shota; Yamamoto, Kenta; Kelgenbaeva, Zhazgul; Ma, Weijan; Tokuda, Makoto; Koinuma, Michio; Isobe, Hiroshi; Yoshiasa, Akira

doi:10.1039/c9ra10003b

Cited by 6 publications

(3 citation statements)

References 16 publications

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“…The experimental setup of PPL was applied as described previously [14][15][16][17], by changing the medium and some experimental conditions. Iron rods with a purity of 99.9%, a diameter of 5 mm and length of 150 mm were purchased from Rare Metallic and were immersed in a 200 mL Pyrex beaker filled with a liquid: aqueous solution (1.0 mM) of hydrogen tetrachloroaurate (HAuCl 4 ) (Kanto Chemical Co., Ltd).…”

Section: Experimental Partmentioning

confidence: 99%

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Au@Fe3O4 NANOPARTICLES: PREPARATION, CHARACTERIZATION AND CYTOTOXIC EVALUATION

Kelgenbaeva

2023

AChJ

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Gold-coated iron oxide nanoparticles are a class of potential theranostic nanoparticles that have been studied for their multitude of magnetic and optical properties with possible medical applications. In this work, spherical Au@Fe3O4 nanoparticles were successfully synthesized from Fe electrodes immersed in HAuCl4 solution using a very simple method - pulsed plasma in liquid, without any dopants or special conditions for stabilization. Vibrating sample magnetometer indicated ferromagnetic behavior of the particles at room temperature with coercivity and saturation magnetization of Hc=175 and Ms= 3.56 emu/g, respectively. Face-centered cubic Au and spinel inverse structure of FCC- Fe3O4 were determined by X-Ray diffraction analysis. High-resolution transmission electron microscopic analysis revealed that Fe3O4 particles with 14 nm in size are connected to 18 nm Au particles. The cytotoxicity of the nanoparticles was evaluated using a XTT assay on Hela cells, revealing very low (cell viability: 98-89% with Fe3O4 and 99-91% for Au@Fe3O4 NPs). This indicates that Au improves biocompatibility of magnetic nanoparticles, enabling their application in biomedicine

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Section: Experimental Partmentioning

confidence: 99%

“…The energy of a single pulse is efficient for the nanostructuring of any refractory conductive material. Materials produced by PPL are very active, owing to the large surface area of particles and the high surface energy provided by high dispersion [15]. A key advantage of PPL are its simplicity and cost effectiveness.…”

Section: Introductionmentioning

confidence: 99%

Au@Fe3O4 NANOPARTICLES: PREPARATION, CHARACTERIZATION AND CYTOTOXIC EVALUATION

Kelgenbaeva

2023

AChJ

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“…Here, we report on a simple and promising method, the pulsed plasma in-liquid technique [28][29][30], to prepare Ag nanoparticles based on the electrical discharge between two Ag electrodes submerged in a dielectric liquid, which is believed to be ecologically friendly and cost-efficient compared with other traditional chemical methods [31]. By changing electrode materials and the dielectric liquid, this method is also capable of synthesising particles of other materials, such as metals, oxides, sulfides, carbides, etc.…”

Section: Introductionmentioning

confidence: 99%

Eco-Friendly Synthesis of Silver Nanoparticles Using Pulsed Plasma in Liquid: Effect of Surfactants

et al. 2022

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Silver (Ag) nanoparticles were successfully prepared by using the in-liquid pulsed plasma technique. This method is based on a low voltage, pulsed spark discharge in a dielectric liquid. We explore the effect of the protecting ligands, specifically Cetyl Trimethylammonium Bromide (CTAB), Polyvinylpyrrolidone (PVP), and Sodium n-Dodecyl Sulphate (SDS), used as surfactant materials to prevent nanoparticle aggregation. The X-Ray Diffraction (XRD) patterns of the samples confirm the face-centered cubic crystalline structure of Ag nanoparticles with the presence of Ag2O skin. Scanning Transmission Electron Microscopy (STEM) reveals that spherically shaped Ag nanoparticles with a diameter of 2.2 ± 0.8 nm were synthesised in aqueous solution with PVP surfactant. Similarly, silver nanoparticles with a peak diameter of 1.9 ± 0.4 nm were obtained with SDS surfactant. A broad size distribution was found in the case of CTAB surfactant.

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Polyol‐Intermediated Facile Synthesis of B₅‐Site‐Rich Ru‐Based Nanocatalysts for CO_x‐Free Hydrogen Production via Ammonia Decomposition

Kim,

et al. 2024

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Herein, a B5‐site‐rich Ru/MgAl2O4 nanocatalyst for the production of COx‐free hydrogen from ammonia (NH3) is synthesized using the polyol method. The polyol method enables size‐sensitive Ru‐nanoparticle growth and controlled B5‐site formation on the catalyst by tuning the carbon‐chain length of the polyol solvent used, obviating the use of a separate stabilizer and enhancing electron donation from Ru (with a high surface electron density) and π‐back bonding. The Ru/MgAl2O4 (BG) catalyst synthesized using butylene glycol (a long‐carbon‐chain solvent) contains 2.5 nm Ru particles uniformly dispersed on its surface and abundant B5 sites at (0 0 2)/(0 1 1). Moreover, the Ru/MgAl2O4 (BG) catalyst exhibits lower activation energy (48.9 kJ mol−1) and higher H2 formation rate (565–1,236 mmol gcat−1 h−1 at 350−450 °C and a weight hourly space velocity of 30,000 mL gcat−1 h−1) during the NH3 decomposition reaction than catalysts with a similar Ru particle size and high metal dispersion synthesized by the impregnation and deposition–precipitation methods. This high performance is possibly because the abundant electron‐donating B5 sites on the catalyst surface accelerate the recombination–desorption of N2, which is the rate‐determining step of the NH3 decomposition reaction at low temperatures. Thus, this study facilitates clean hydrogen production.

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Synthesis of Pd–Ru solid-solution nanoparticles by pulsed plasma in liquid method

Abstract: We have synthesized solid-solution nanoparticles (Pd : Ru = 1 : 3, 1 : 1 and 3 : 1) in an immiscible Pd–Ru system by the pulsed plasma in liquid method using Pd–Ru mixture bulk electrodes.

Cited by 6 publications

References 16 publications

Au@Fe3O4 NANOPARTICLES: PREPARATION, CHARACTERIZATION AND CYTOTOXIC EVALUATION

Au@Fe3O4 NANOPARTICLES: PREPARATION, CHARACTERIZATION AND CYTOTOXIC EVALUATION

Eco-Friendly Synthesis of Silver Nanoparticles Using Pulsed Plasma in Liquid: Effect of Surfactants

Polyol‐Intermediated Facile Synthesis of B₅‐Site‐Rich Ru‐Based Nanocatalysts for CO_x‐Free Hydrogen Production via Ammonia Decomposition

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Synthesis of Pd–Ru solid-solution nanoparticles by pulsed plasma in liquid method

Abstract: We have synthesized solid-solution nanoparticles (Pd : Ru = 1 : 3, 1 : 1 and 3 : 1) in an immiscible Pd–Ru system by the pulsed plasma in liquid method using Pd–Ru mixture bulk electrodes.

Cited by 6 publications

References 16 publications

Au@Fe3O4 NANOPARTICLES: PREPARATION, CHARACTERIZATION AND CYTOTOXIC EVALUATION

Au@Fe3O4 NANOPARTICLES: PREPARATION, CHARACTERIZATION AND CYTOTOXIC EVALUATION

Eco-Friendly Synthesis of Silver Nanoparticles Using Pulsed Plasma in Liquid: Effect of Surfactants

Polyol‐Intermediated Facile Synthesis of B5‐Site‐Rich Ru‐Based Nanocatalysts for COx‐Free Hydrogen Production via Ammonia Decomposition

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Polyol‐Intermediated Facile Synthesis of B₅‐Site‐Rich Ru‐Based Nanocatalysts for CO_x‐Free Hydrogen Production via Ammonia Decomposition