Colloidal synthesis of copper nanoparticles in a two-phase liquid–liquid system

Dadgostar, Nafiseh; Ferdous, Sultana; Henneke, Dale

doi:10.1016/j.matlet.2009.09.067

Cited by 34 publications

(26 citation statements)

References 17 publications

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“…The system is thermodynamically stable and called reverse micelles. 61 The minimum concentration of surfactants required to form micelle is termed as critical micelle concentration (CMC). CMC is a®ected by various characteristics of reverse micelles such as solvent interaction between bulk organic solvent tail, surfactant tail and geometry, temperature and quantity of co-solvent or salt.…”

Section: -3mentioning

confidence: 99%

“…CMC is a®ected by various characteristics of reverse micelles such as solvent interaction between bulk organic solvent tail, surfactant tail and geometry, temperature and quantity of co-solvent or salt. 61 The control of metallic nanoparticles synthesis within the reverse micelle system requires an understanding of the physical properties, controlling thermodynamics and reaction mechanism. Use of the reverse micellar system for nanomaterial synthesis began in the early 1990s by a few prominent and in°uential research groups.…”

Section: -3mentioning

confidence: 99%

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Selection of a Suitable Method for the Synthesis of Copper Nanoparticles

Umer

Naveed

Ramzan

et al. 2012

NANO

189

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Various methods for the synthesis of copper nanoparticles employing chemical, physical and biological techniques considering bottom-up and top-down methods synthesis have been studied. The properties of copper nanoparticles depend largely on their synthesis procedures. The results from various investigations performed by di®erent scientists using these methods have been summarized. The applications, characterization techniques, advantages and disadvantages of each synthesis method are also the point of discussion. A detailed study of the results reveals that chemical reduction methods are most suitable for the synthesis of copper nanoparticles. Chemical reduction of copper salts using ascorbic acid (Vitamin C) is a new and green approach in which ascorbic acid is used both as the reduction and capping agent. This approach is the most e®ective and is also economical. Wide applications have been reported in various¯elds, including heat transfer, catalyst production, electronics and medicine at a commercial scale. This process is nontoxic, environment-friendly and economical. The applications, characterization techniques, advantages and disadvantages of each synthesis method have been presented.

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Section: -3mentioning

confidence: 99%

Section: -3mentioning

confidence: 99%

Selection of a Suitable Method for the Synthesis of Copper Nanoparticles

Umer

Naveed

Ramzan

et al. 2012

NANO

189

View full text Add to dashboard Cite

show abstract

“…Hence, different strategies have been employed to stabilize the formed nanoparticles. Stabilizers such as carboxylic acids and polyvinyl alcohol (Khanna et al, 2007), oleylamine (Dadgostar et al, 2010), and poly amidoamine dendrimers (Balogh and Tomalia, 1998) have been used to disperse copper nanoparticles. Whereas, these stabilizers are all organic chemicals, which might interfere with the reactive oxygen species (ROS) generated from the activation of oxygen by ZVC.…”

Section: Introductionmentioning

confidence: 99%

Rapid degradation of atrazine by hydroxyl radical induced from montmorillonite templated subnano-sized zero-valent copper

et al. 2017

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In this study, subnano-sized zero-valent copper (ZVC) was synthesized using montmorillonite clay mineral as the template. The discrete distribution of surface charge on montmorillonite effectively separates the formed ZVC particles and inhibits their aggregation. X-ray diffraction result indicates that the size of ZVC particles on montmorillonite is ∼6 Å, which is much smaller than nano-ZVC prepared by conventional method. The montmorillonite templated ZVC (ZVCMMT) shows superior reactivity as indicated by the degradation of atrazine, over 90% atrazine (15 μM) could be degraded in a few min. Hydroxyl radical is confirmed as the reactive species, which is produced from the activation of oxygen by ZVC. It was also shown that the degradation process is strongly dependent on the hydration status of synthesized ZVCMMT. The freeze dried ZVCMMT exhibits higher reactivity compared to freshly prepared ZVCMMT, which can be explained by the higher adsorption of atrazine and oxygen residue on freeze dried ZVCMMT surface. In addition, the toxicity of atrazine is significantly decreased after the reaction with ZVCMMT, indicating that ZVCMMT could be used as a promising material for rapid remediation of persistent organic contaminants.

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“…This makes necessary the use of stabilizers or agents such as water-soluble coating polymers, surfactants, or coordination ligands that have functional groups that can form complexes with copper ions present in the medium [3]. Compounds which are frequently used to meet the above include surfactants tetraethylenepentamine [30], cetyltrimethylammonium bromide (CTAB) [31], tetraoctylammonium bromide [32], and polyelectrolytes such as polyethyleneimine (PEI) [33], polyethylene glycols (PEG) [34], polyvinylpyrrolidone (PVP) [35], polyetheretherketone (PEEK) [36], and polyallylamine (PAAm) [37]. These materials can act as surface protectors, have the function of controlling size, size distribution, and shape of particles, and also prevent agglomeration thereof.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Copper Nanoparticles Coated with Nitrogen Ligands

Sierra-Ávila¹,

Pérez-Álvarez²,

Cadenas‐Pliego³

et al. 2014

Journal of Nanomaterials

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The synthesis of copper nanoparticles was studied by wet chemical methods using copper sulfate pentahydrate (CuSO4·5H2O) and nitrogen ligands allylamine (AAm) and polyallylamine (PAAm) as stabilizers. The results suggest that the use of these ligands leads to the exclusive formation of metallic copper nanoparticles (Cu-NPs). The use of partially crosslinked polyallylamine (PAAmc) leads to nanoparticles (NPs) with low yields and high coating content, while linear PAAm leads to NPs with high yields and low coating content. The chemical composition of the particles was determined by XRD and average particle diameters were determined by the Debye-Scherrer equation. TGA analysis provided evidence of the content and thermal stability of the coating on the nanoparticles and PAAm. The morphology, particle size distribution, and presence of PAAm coating were observed through TEM. The use of AAm in the synthesis of NPs could be a good alternative to reduce costs. By using TGA, TEM, and DSC techniques, it was determined that synthesized NPs with AAm presented a coating with similar characteristics to NPs with PAAm, suggesting that AAm underwent polymerization during the synthesis.

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Colloidal synthesis of copper nanoparticles in a two-phase liquid–liquid system

Cited by 34 publications

References 17 publications

Selection of a Suitable Method for the Synthesis of Copper Nanoparticles

Selection of a Suitable Method for the Synthesis of Copper Nanoparticles

Rapid degradation of atrazine by hydroxyl radical induced from montmorillonite templated subnano-sized zero-valent copper

Synthesis of Copper Nanoparticles Coated with Nitrogen Ligands

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