Rapid synthesis of metal nanoparticles using low-temperature, low-pressure argon plasma chemistry and self-assembly

Traba, Christian; Darwish, Marjan; Mafla-Gonzalez, Camila; kolenovic, Belmin; Deremer, Adrianna; Centeno, Daniel; Liu, Tianchi; Kim, Deok-Yang; Cattabiani, Thomas; Drwiega, Thomas J.; Kumar, Ish; Li, Clive

doi:10.1039/d2gc02592b

Cited by 10 publications

(66 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This work builds on our recent project involving the synthesis of CuNPs using argon plasma reduction technology . SEM, coupled with EDS analysis, was useful in the beginning to confirm the chemical identity of the metal NPs synthesized in this study (Figure ).…”

Section: Resultsmentioning

confidence: 99%

“…After the immobilization step, the films were gently washed with a Milli-Q water. Once placed inside the plasma chamber and subjected to the vacuum, the immobilized substrates underwent a solvent evaporation process . After the solvent evaporation was complete, the chamber reached a pressure of 220 mTorr, leaving behind the salt or what we refer to as the metal precursor.…”

Section: Methodsmentioning

confidence: 99%

“…5 From this work it was concluded that argon plasma technology could be used for every step of the NP synthesis process, including catalyst preparation through etching, decomposition and, finally, nucleation and growth. 5 Building from this information, we were able to develop a unique method for the synthesis of nanocoatings by leveraging the chemical and physical properties of poly(acrylic acid) nanocoatings constructed from an argon plasma-induced graft polymerization technique. As a result, we were able to electrostatically bind the negatively charged nanocoating to the positively charged copper ion.…”

Section: Effects Of Argon Plasma On In Situ Reductionmentioning

confidence: 99%

“…5 This process facilitates a fast nucleation process, followed by self-assembly. 5 As a result, significant amounts of CuNPs could be synthesized directly from the reduction of the metal precursor with an argon plasma. Determining the concentration of metallic NPs typically requires an analytical method that is sensitive to changes in the amount of metals that are present, and for this reason, we chose ICP-OES.…”

Section: Effects Of Argon Plasma On In Situ Reductionmentioning

confidence: 99%

“…5 Further analysis revealed that the in situ plasma-assisted reduction process produced CuNPs with maximum diameters of approximately 160 nm, when analyzed by SEM. 5 The microwave radiation generated from the argon plasma produces energetic argon species and electrons. 5 It is the electrons produced in the argon plasma that are primarily responsible for the synthesis of CuNPs.…”

Section: Mechanism Of Actionmentioning

confidence: 99%

See 4 more Smart Citations

Plasma-Induced Graft Polymerization for the In Situ Synthesis of Cross-Linked Nanocoatings

Kolenovic,

Mafla,

Richards

et al. 2024

ACS Appl. Eng. Mater.

Self Cite

View full text Add to dashboard Cite

Conventional technology for the modification of surfaces loaded with nanomaterials typically requires a three-step process: (1) the construction of a polymer platform, (2) the synthesis of nanoparticles (NPs), and (3) the immobilization or anchoring of NPs. During the immobilization or anchoring process, there is an unavoidable excess of NPs primarily situated at the top of the surface, resulting in the agglomeration of aggregates. These aggregates can form different shapes and sizes, often creating an uneven distribution of NPs, resulting in an unstable coating that gradually releases NPs over time. In this study, argon plasma technology was used to create an innovative nanocoating consisting of polymer chains that are cross-linked to metal NPs, forming a polymer composite. To do this, argon plasma was employed as both an oxidizing and reducing agent during different steps in the nanocoating fabrication process. More specifically, a "grafting-from" approach, coupled with in situ argon plasma-assisted reduction of Cu 2+ to Cu 0 , provided an innovative means for the construction of the nanocoating. With this "grafting-from" approach, the covalent binding of acrylic acid monomers to a surface results in a negatively charged nanocoating when exposed to solutions of a pH greater than 4.5. Due to its negative charge, the nanocoating can bind cations from solution, creating a platform for the in situ argon plasma-assisted reduction of Cu 2+ to primarily Cu 0 NPs (CuNPs). By controlling grafting conditions, in situ plasma-assisted reduction of NPs, and cross-linking conditions, we can generate nanocoatings with specific (1) polymer graft density and film thickness, (2) NP concentration cross-linked to polymer chains, and (3) NP composition. Under optimal experimental conditions, a nonleaching cross-linkage occurs between the nanocoating and the NPs, with only minimal NP aggregation. We have used this technology to engineer cross-linked nanocoatings possessing extremely low amounts of CuNPs (4.02 μg/cm 2 ), which are distributed within the nanocoating and are capable of preventing infections.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Effects Of Argon Plasma On In Situ Reductionmentioning

confidence: 99%

Section: Effects Of Argon Plasma On In Situ Reductionmentioning

confidence: 99%

Section: Mechanism Of Actionmentioning

confidence: 99%

See 3 more Smart Citations

Plasma-Induced Graft Polymerization for the In Situ Synthesis of Cross-Linked Nanocoatings

Kolenovic,

Mafla,

Richards

et al. 2024

ACS Appl. Eng. Mater.

Self Cite

View full text Add to dashboard Cite

show abstract

Anode Glow Discharge Electrolysis Synthesis of Flower‐Like α‐MnO₂ Nanospheres: Structure, Formation Mechanism, and Supercapacitor Performance

Yu,

Liu,

Wang

et al. 2024

ChemSusChem

View full text Add to dashboard Cite

A novel green synthesis strategy–anode glow discharge electrolysis (AGDE) was employed for one‐step preparation of α‐MnO2 in 2 g L−1 KMnO4 solution, in which Pt needle and carbon rod were regarded as anode and cathode, respectively. The optimal preparation condition is 400 V for 60 min and the power consumption is below 45 W. The XRD, Raman spectra, XPS and EPR proved that α‐MnO2 with structural defects (oxygen vacancies) is obtained. SEM and TEM revealed that α‐MnO2 shows a flower‐like nanospheres with a diameter of 165 nm, which is assembled by many nanosheets. A possible formation mechanism is that the MnO2 is generated via the reduction of MnO4− by H⋅ and eaq− in plasma‐liquid interface. Electrochemical test found that MnO2 nanospheres exhibit a specific capacitance of 365 F g−1 at 1 A g−1, and capacity retention of 79.8 % after 10,000 cycles at 5 A g−1. The assembled asymmetric supercapacitor shows the maximum energy density of 23.1 Wh kg−1 at power density of 1.89 kW kg−1. In brief, AGDE is a simple, facile and green technique for the synthesis of α‐MnO2 without adding extra chemicals, and prepared α‐MnO2 can be considered as an excellent candidate of electrode materials for supercapacitor.

show abstract

Plasma‐Assisted Material Preparation Strategies and Property Optimization

Heng,

Yu,

Chen

et al. 2024

Physica Status Solidi (a)

View full text Add to dashboard Cite

In this article, the preparation strategies of plasma‐assisted materials and their applications in many kinds of materials and their performance optimization are reviewed. The concept, classification, and unique advantages of plasma in the field of materials science are introduced. Its application in metal‐based materials (including metal nanomaterials and catalysts), organic–inorganic composites (such as metal‐organic frameworks and quantum dots), 2D materials, and derived materials (such as graphene, boron nitride, and diamond), including improving material properties, realizing one‐step synthesis, adjusting structure and function, etc. The future development of this field is also prospected.

show abstract

Rapid synthesis of metal nanoparticles using low-temperature, low-pressure argon plasma chemistry and self-assembly

Abstract: The synthesis of metal nanoparticles has become a priority for the advancement of nanotechnology. In attempts to create these nanoparticles, several different methods: chemistry, physics, and biology, have all been...

Cited by 10 publications

References 58 publications

Plasma-Induced Graft Polymerization for the In Situ Synthesis of Cross-Linked Nanocoatings

Plasma-Induced Graft Polymerization for the In Situ Synthesis of Cross-Linked Nanocoatings

Anode Glow Discharge Electrolysis Synthesis of Flower‐Like α‐MnO₂ Nanospheres: Structure, Formation Mechanism, and Supercapacitor Performance

Plasma‐Assisted Material Preparation Strategies and Property Optimization

Contact Info

Product

Resources

About

Rapid synthesis of metal nanoparticles using low-temperature, low-pressure argon plasma chemistry and self-assembly

Abstract: The synthesis of metal nanoparticles has become a priority for the advancement of nanotechnology. In attempts to create these nanoparticles, several different methods: chemistry, physics, and biology, have all been...

Cited by 10 publications

References 58 publications

Plasma-Induced Graft Polymerization for the In Situ Synthesis of Cross-Linked Nanocoatings

Plasma-Induced Graft Polymerization for the In Situ Synthesis of Cross-Linked Nanocoatings

Anode Glow Discharge Electrolysis Synthesis of Flower‐Like α‐MnO2 Nanospheres: Structure, Formation Mechanism, and Supercapacitor Performance

Plasma‐Assisted Material Preparation Strategies and Property Optimization

Contact Info

Product

Resources

About

Anode Glow Discharge Electrolysis Synthesis of Flower‐Like α‐MnO₂ Nanospheres: Structure, Formation Mechanism, and Supercapacitor Performance