Preparation and Characterization of Silver-Iron Bimetallic Nanoparticles on Activated Carbon Using Plasma in Liquid Process

The mono and bi-metallic nanoparticles have conspicuous properties and are widely used in the environment, energy, and medical fields. In this study, bimetallic nanoparticles composed of silver and iron were precipitated on the surface of activated carbon in a single process using plasma in liquid process (PLP). Silver-iron ions and various radicals were actively generated in the aqueous reactant solution by the PLP. Although metals were precipitated on AC depending on the number of precursors added to the aqueous reactant solution, the standard reduction potential of silver ions was higher than that of iron ions, so silver precipitated on AC. The silver precipitate on AC was a mixture of metallic silver and silver oxide, and iron was present as Fe3O4. Spherical nanoparticles, 100–120 nm in size, were observed on the surface of the Ag-Fe/AC composite. The composition of the bimetallic nanoparticles could be controlled by considering the ionization tendency and standard reduction potential of metal ions and controlling the concentration of the precursors. The PLP presented in this study can be applied to the preparing method of bimetallic nanoparticle/carbon materials and can be expected to be used in the prepare of energy and environmental materials such as MFC and absorption materials for removing pollutants.

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Facile Preparation of Ni-Co Bimetallic Oxide/Activated Carbon Composites Using the Plasma in Liquid Process for Supercapacitor Electrode Applications

Nanomaterials ◽

10.3390/nano10010061 ◽

2019 ◽

Vol 10 (1) ◽

pp. 61 ◽

Cited By ~ 2

Author(s):

Heon Lee ◽

In-Soo Park ◽

Young-Kwon Park ◽

Kay-Hyeok An ◽

Byung-Joo Kim ◽

...

Keyword(s):

Activated Carbon ◽

Electrode Materials ◽

Bimetallic Nanoparticles ◽

Molar Ratio ◽

Supercapacitor Electrode ◽

Cobalt Ions ◽

Molar Ratios ◽

Resistance Reduction ◽

Liquid Process ◽

Reactant Solution

In this study, a plasma in a liquid process (PiLP) was used to facilely precipitate bimetallic nanoparticles composed of Ni and Co elements on the surface of activated carbon. The physicochemical and electrochemical properties of the fabricated composites were evaluated to examine the potential of supercapacitors as electrode materials. Nickel and cobalt ions in the aqueous reactant solution were uniformly precipitated on the AC surface as spherical nanoparticles with a size of about 100 nm by PiLP reaction. The composition of nanoparticles was determined by the molar ratio of nickel and cobalt precursors and precipitated in the form of bimetallic oxide. The electrical conductivity and specific capacitance were increased by Ni-Co bimetallic oxide nanoparticles precipitated on the AC surface. In addition, the electrochemical performance was improved by stable cycling stability and resistance reduction and showed the best performance when the molar ratios of Ni and Co precursors were the same.

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Preparation of Au/Pd Bimetallic Nanoparticles by a Microwave-Induced Plasma in Liquid Process

Bulletin of the Chemical Society of Japan ◽

10.1246/bcsj.20160333 ◽

2017 ◽

Vol 90 (3) ◽

pp. 279-285 ◽

Cited By ~ 24

Author(s):

Hiroaki Shirai ◽

Mai Thanh Nguyen ◽

David Čempel ◽

Hiroki Tsukamoto ◽

Tomoharu Tokunaga ◽

...

Keyword(s):

Bimetallic Nanoparticles ◽

Microwave Induced Plasma ◽

Liquid Process ◽

Plasma In Liquid

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Green synthesis of mixed metallic nanoparticles using room temperature self-assembly

JOURNAL OF ADVANCES IN PHYSICS ◽

10.24297/jap.v13i2.5942 ◽

2017 ◽

Vol 13 (2) ◽

pp. 4671-4677 ◽

Cited By ~ 2

Author(s):

A. M. Abdelghany ◽

A.H. Oraby ◽

Awatif A Hindi ◽

Doaa M El-Nagar ◽

Fathia S Alhakami

Keyword(s):

Self Assembly ◽

Metallic Nanoparticles ◽

Room Temperature ◽

Bimetallic Nanoparticles ◽

Reduction Process ◽

Nano Particles ◽

Nano Structure ◽

Small Shift ◽

Molar Ratios ◽

Vis Spectroscopy

Bimetallic nanoparticles of silver (Ag) and gold (Au) were synthesized at room temperature using Curcumin. Reduction process of silver and gold ions with different molar ratios leads to production of different nanostructures including alloys and core-shells. Produced nanoparticles were characterized simultaneously with FTIR, UV/vis. spectroscopy, transmission electron microscopy (TEM), and Energy-dispersive X-ray (EDAX). UV/vis. optical absorption spectra of as synthesized nanoparticles reveals presence of surface palsmon resonance (SPR) of both silver at (425 nm) and gold at (540 nm) with small shift and broadness of gold band after mixing with resucing and capping agent in natural extract which suggest presence of bimetallic nano structure (Au/Ag). FTIR and EDAX data approve the presence of bimetallic nano structure combined with curcumin extract. TEM micrographs shows that silver and gold can be synthesized separately in the form of nano particles using curcumin extract. Synthesis of gold nano particles in presence of silver effectively enhance and control formation of bi-metallic structure.

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Phyto-Facilitated Bimetallic ZnFe2O4 Nanoparticles via Boswellia carteri: Synthesis, Characterization and Anti-Cancer Activity.

Anti-Cancer Agents in Medicinal Chemistry ◽

10.2174/1871520621666201218114040 ◽

2020 ◽

Vol 21 ◽

Author(s):

Amer Imraish ◽

Afnan Al-Hunaiti ◽

Tuqa Abu-Thiab ◽

Abed Al-Qader Ibrahim ◽

Eman Hwaitat ◽

...

Keyword(s):

Anticancer Activity ◽

Cell Lines ◽

Metallic Nanoparticles ◽

Bimetallic Nanoparticles ◽

Iron Chloride ◽

Nano Particles ◽

Adverse Side Effect ◽

Wide Range ◽

Anti Cancer ◽

Znfe2o4 Nanoparticles

Background: The growing unsatisfaction toward the available traditional chemotherapeutic agents enhanced the need to develop new methods for obtaining materials with more effective and safe anti-cancer properties. Over the past few years, usage of metallic nanoparticles has been a target for researchers of different scientific and commercial fields due to their tiny sizes, environment friendly properties and wide range applications. To overcome the obstacles of traditional physical and chemical methods for synthesis of such nanoparticles, a new less expensive and eco-friendly method has been adopted using natural existing organisms as a reducing agent to mediate synthesis of the desired metallic nanoparticles from their precursors, a process called green biosynthesis of nanoparticles. Objective: Here in the present study, zinc iron bimetallic nanoparticles (ZnFe2O4) were synthesized via an aqueous extract of Boswellia Carteri resin mixed with zinc acetate and iron chloride precursors, and they were tested for their anticancer activity. Methods: Various analytic methods were applied for the characterization of the Phyto synthesized ZnFe2O4 and they were tested for their anticancer activity against MDA-MB-231, K562, MCF-7 cancer cell lines and normal fibroblasts. Results: Our results demonstrate the synthesis of cubic structured bimetallic nanoparticles ZnFe2O4 with an average diameter 10.54 nm. MTT cytotoxicity assay demonstrate that our phyto-synthesized ZnFe2O4 nanoparticles exhibited a selective and potent anticancer activity against K562 and MDA-MB-231 cell lines with IC50 values 4.53 µM and 4.19 µM, respectively. Conclusion: In conclusion, our bio synthesized ZnFe2O4 nano particles show a promising environmentally friendly of low coast chemotherapeutic approach against selective cancers with a predicted low adverse side effect toward normal cells. Further in vivo advanced animal research should be done to execute their applicability in living organisms.

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Effects of Additives on the Preparation of Ag Nanoparticles Using the Microwave-Induced Plasma in Liquid Process

ChemistrySelect ◽

10.1002/slct.201701462 ◽

2017 ◽

Vol 2 (26) ◽

pp. 7873-7879 ◽

Cited By ~ 6

Author(s):

Masamu Nishimoto ◽

Hiroki Tsukamoto ◽

Mai Thanh Nguyen ◽

Tetsu Yonezawa

Keyword(s):

Ag Nanoparticles ◽

Microwave Induced Plasma ◽

Liquid Process ◽

Plasma In Liquid

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“Green” Synthesis of Metallic Nanoparticles by Sonoelectrochemical and Sonogalvanic Replacement Methods

Bioinorganic Chemistry and Applications ◽

10.1155/2021/9830644 ◽

2021 ◽

Vol 2021 ◽

pp. 1-17

Author(s):

Оrest Kuntyi ◽

Galyna Zozulya ◽

Andriy Kytsya

Keyword(s):

Green Synthesis ◽

Electrochemical Reduction ◽

Metallic Nanoparticles ◽

Bimetallic Nanoparticles ◽

Galvanic Replacement ◽

Pulsed Ultrasound ◽

Environmental Friendliness ◽

And Shock Waves ◽

Sonoelectrochemical Synthesis

The main features of the “green” synthesis of metallic nanoparticles (MNPs) by the sonoelectrochemical methods are manufacturability, environmental friendliness, and the possibility of controlling the geometry of the forming particles. The electrochemical reduction technique allows efficiently designing the metal nanoparticles and provides the control of the content of components of bimetallic nanoparticles, as well as minimizing the number of precursors in working solutions. Due to the generation of turbulence, microjets, and shock waves, ultrasound increases mass transfer and formation of radicals in aqueous solutions and, accordingly, accelerates the processes of nucleation and growth of MNPs. Therefore, this hybrid method, which combines electrolysis and ultrasound, has attracted the interest of researchers in the last two decades as one of the most promising techniques. The present work presents a short analysis of the reference literature on sonoelectrochemical synthesis of metallic and bimetallic nanoparticles. The main factors influencing the geometry of nanoparticles and their size distribution are analyzed. The use of pulsed ultrasound and pulsed current supply during sonoelectrochemical synthesis is especially effective in designing MNPs. Emphasis is placed on the role of surfactants in the formation of MNPs and sacrificial anodes in providing the algorithm: “anodic dissolution-electrochemical reduction of metal-nucleation and formation of МNPs.” It is noted that ultrasound allows synthesizing the MNPs and M1M2NPs during the galvanic replacement, and an analogy of the formation of nanoparticles by sonogalvanic replacement and sonoelectrochemical method is shown.

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Metal oxide and bimetallic nanoparticles in ionic liquids: synthesis and application in multiphase catalysis

Nanotechnology Reviews ◽

10.1515/ntrev-2013-0019 ◽

2013 ◽

Vol 2 (5) ◽

pp. 577-595 ◽

Cited By ~ 19

Author(s):

Martin H.G. Prechtl ◽

Paul S. Campbell

Keyword(s):

Ionic Liquids ◽

Metal Oxide ◽

Metallic Nanoparticles ◽

Bimetallic Nanoparticles ◽

Synthetic Methods ◽

Supramolecular Organization ◽

Stabilizing Agents ◽

Bimetallic Alloy ◽

Current State

AbstractIonic liquids (ILs) are well established as solvents and stabilizing agents for the synthesis of metallic nanoparticles (NPs) in general. The physicochemical properties of ILs and the supramolecular organization in the liquid state are capable of directing the growth of transition metal NPs generated in situ and to subsequently protect and stabilize them. Until now, many different NPs have been successfully synthesized within these media; however, the synthesis of metal oxide and bimetallic alloy or core-shell NPs in ILs is still relatively rare. Herein, we summarize the current state-of-the-art of the synthetic methods for these materials and their application in the broad field of catalysis, including multiphase systems, hydrogenation, dehydrogenation, functionalization, as well as defunctionalization reactions.

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Effect of Chloride Ions on the Point-of-Use Drinking Water Disinfection Performance of Porous Ceramic Media Embedded with Metallic Silver and Copper

Water ◽

10.3390/w12061625 ◽

2020 ◽

Vol 12 (6) ◽

pp. 1625

Author(s):

Rekha Singh ◽

Woohang Kim ◽

James A. Smith

Keyword(s):

Drinking Water ◽

Porous Ceramic ◽

Chloride Ion ◽

Silver Ions ◽

Chloride Ions ◽

Ion Concentration ◽

Metallic Silver ◽

E Coli ◽

Ion Concentrations ◽

Copper Release

This study quantifies the effects of chloride ions on silver and copper release from porous ceramic cubes embedded with silver and copper and its effect on E. coli disinfection in drinking water. Log-reduction of E. coli by silver ions decreased after 4 h of contact time as the chloride ion concentration increased from 0 to 250 mg/L but, it was not changed by copper ions under the same conditions. For silver addition by silver-ceramic cubes, log reductions of E. coli decreased sharply from 7.2 to 1.6 after 12 h as the chloride concentration increased from 0 to 250 mg/L. For the silver-ceramic cube experiments, chloride ion also reduced the total silver concentration in solution. After 24 h, total silver concentrations in solution decreased from 61 µg/L to 20 µg/L for corresponding chloride ion concentrations. According to the MINTEQ equilibrium model analysis, the decrease in disinfection ability with silver embedded ceramic cubes could be the result of precipitation of silver ions as silver chloride. This suggests that AgCl was precipitating within the pore space of the ceramic. These results indicate that, although ionic silver is a highly effective disinfectant for E. coli, the presence of chloride ions can significantly reduce disinfection efficacy. For copper-ceramic cubes, log reductions of E. coli by copper embedded cubes increased from 1.2 to 1.5 when chloride ion concentration increased from 0 to 250 mg/L. Total copper concentrations in solution increased from 4 µg/L to 14 µg/L for corresponding chloride ion concentrations. These results point towards the synergistic effect of chloride ions on copper oxidation as an increased concentration of chloride enhances copper release.

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Facile Aqueous-Phase Synthesis of Bimetallic (AgPt, AgPd, and CuPt) and Trimetallic (AgCuPt) Nanoparticles

Materials ◽

10.3390/ma13020254 ◽

2020 ◽

Vol 13 (2) ◽

pp. 254 ◽

Cited By ~ 2

Author(s):

Zengmin Tang ◽

Euiyoung Jung ◽

Yejin Jang ◽

Suk Ho Bhang ◽

Jinheung Kim ◽

...

Keyword(s):

Aqueous Phase ◽

Metallic Nanoparticles ◽

Reduction Method ◽

Bimetallic Nanoparticles ◽

Atomic Ratio ◽

Core Shell ◽

Phase Synthesis ◽

Short Reaction Time ◽

Core Shell Structure ◽

Co Reduction

Multi-metallic nanoparticles continue to attract attention, due to their great potential in various applications. In this paper, we report a facile aqueous-phase synthesis for multi-metallic nanoparticles, including AgPt, AgPd, CuPt, and AgCuPt, by a co-reduction method within a short reaction time of 10 min. The atomic ratio of bimetallic nanoparticles was easily controlled by varying the ratio of each precursor. In addition, we found that AgCuPt trimetallic nanoparticles had a core-shell structure with an Ag core and CuPt shell.

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