Preparation of Cu2O nanoparticles in cupric chloride solutions with a simple mechanochemical approach

Chen, D.; Ni, Shibing; Fang, Junchuan; Xiao, Tan

doi:10.1016/j.jallcom.2010.02.138

Cited by 25 publications

(8 citation statements)

References 10 publications

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“…However, standard formation enthalpies as of −166.7 kJ/mol and −155.2 kJ/mol indicated that the Cu 2 O was slightly more stable than CuO in the solid state. In fact, Chen et al [53] suggested that an excess of copper NPs could reduce cupric oxide NPs:…”

Section: Effect Of Reducing Agentmentioning

confidence: 99%

Effect of the Concentration of NaBH4 and N2H4 as Reductant Agent on the Synthesis of Copper Oxide Nanoparticles and its Potential Antimicrobial Applications

Guzmán¹,

Arcos²,

Dille³

et al. 2018

Nano BioMed ENG

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The antibacterial activity of various nanoparticles is gaining increasing interest due to its potential medical applications. In this work, we presented the synthesis of copper oxide nanoparticles prepared by chemical reduction from aqueous solutions of copper sulfate (CuSO 4) with sodium borohydride (NaBH 4) and hydrazine hydrate (N 2 H 4) as reductant and polyvinylpyrrolidone (PVP) as stabilizer. The X-ray diffraction spectra showed the formation of tenorite (CuO) and cuprite (Cu 2 O) nanoparticles when different ratios of CuSO 4 /NaBH 4 and CuSO 4 /N 2 H 4 were used. Photographs obtained by transmission electron microscopy (TEM) showed agglomerates of grains with a narrow size distribution (from 20 to 70 nm), whereas the radii of the individual particles were between 2 and 20 nm. Smaller nanoparticles and narrower particle size distributions were obtained when NaBH 4 was used. The results of antibacterial activity using the Kirby-Bauer method showed that nanoparticles obtained with NaBH 4 presented a reasonable bactericidal activity. Pseudomonas aureginosa and Staphylococcus aureus were more susceptible to the particle size than Escherichia coli. In addition, with small amounts of Cu 2 O in samples of CuO nanoparticles, the antibacterial susceptibility against Pseudomonas aureginosa was improved. Finally, nanoparticles of CuO incorporated into cotton by applying ultrasound waves remained impregnated after five washes.

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Section: Effect Of Reducing Agentmentioning

confidence: 99%

Effect of the Concentration of NaBH4 and N2H4 as Reductant Agent on the Synthesis of Copper Oxide Nanoparticles and its Potential Antimicrobial Applications

Guzmán¹,

Arcos²,

Dille³

et al. 2018

Nano BioMed ENG

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show abstract

“…Considering that there are great differences in size, morphology and internal stress between the cuprous oxide prepared in this paper and the Cu 2 O powder purchased on the market, the normal copper oxide used in this paper was prepared by high energy ball milling in 100 mL CuCl 2 solution using 5 g of Cu powder as the raw material. More details of the preparation process can be found in a published article [24].…”

Section: Phase Transformationmentioning

confidence: 99%

Formation of Cu2O Solid Solution via High-Frequency Electromagnetic Field-Assisted Ball Milling: The Reaction Mechanism

Yingzhe

Chen

et al. 2020

Materials

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The contamination of environmental water with organic pollutants poses significant challenges for society, and much effort has been directed toward the development of catalysts and methods that can decompose these pollutants. While effort has been directed toward the fabrication of Cu2O catalysts by ball milling, this technique can involve long preparation times and provide low yields. In this study, we synthesized a solid solution of Cu2O in 22 h by high-frequency electric-field-assisted ball milling below 40 °C in only one step under aqueous conditions. We investigated the catalytic activities of the produced Cu2O solid solution in the microwave-assisted degradation of dyes, namely rhodamine B, phenol red and methyl orange. The prepared Cu2O solid solution was very catalytically active and completely degraded the above-mentioned dyes within 2 min. The one-dimensional diffusion model and the phase boundary (planar) model were found to describe the kinetics well. Synergism between ball milling and the high-frequency electromagnetic field plays a key role in the preparation of Cu2O solid solution nanoparticles. Ball milling facilitates the relaxation of the Cu2O lattice and high-frequency electromagnetic radiation accelerates the diffusion of Fe atoms into the Cu2O crystal along the (111) crystal plane, quickly leading to the formation of a Cu2O solid solution.

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“…Nano‐sized oxides of transition metals have been drawn more and more attention in recent years, because their special physical and chemical properties different from their bulk counterparts . Hausmannite, Mn 3 O 4 , is an oxide with the normal spinel structure in room temperature.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Mn₃O₄ Nanoparticles for Catalytic Application via Ultrasound‐Assisted Ball Milling

Chen

Yang

Jiang³

et al. 2018

ChemistrySelect

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In this present study, tetragonal manganese oxide (Mn 3 O 4 ) nanoparticle was successfully prepared using Mn(CH 3 COO) 2 ·4H 2 O as raw material by the ultrasound-assisted ball milling at a low temperature. The as-prepared Mn 3 O 4 was characterized by XRD, SEM and N 2 absorption-desorption. The research results confirmed that the ball milling product was single phase Mn 3 O 4 . The catalytic activity of the as-prepared sample was testified by quantifying the degradation of the Methyl blue and Rhodamine B aqueous solution with the assistance of H 2 O 2 . It shows the degradation efficiency of Mn 3 O 4 nanoparticle can reach up to 100% within 40 min and 50 min for the Methyl blue and Rhodamine B respectively.

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Preparation of Cu2O nanoparticles in cupric chloride solutions with a simple mechanochemical approach

Cited by 25 publications

References 10 publications

Effect of the Concentration of NaBH4 and N2H4 as Reductant Agent on the Synthesis of Copper Oxide Nanoparticles and its Potential Antimicrobial Applications

Effect of the Concentration of NaBH4 and N2H4 as Reductant Agent on the Synthesis of Copper Oxide Nanoparticles and its Potential Antimicrobial Applications

Formation of Cu2O Solid Solution via High-Frequency Electromagnetic Field-Assisted Ball Milling: The Reaction Mechanism

Synthesis of Mn₃O₄ Nanoparticles for Catalytic Application via Ultrasound‐Assisted Ball Milling

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Preparation of Cu2O nanoparticles in cupric chloride solutions with a simple mechanochemical approach

Cited by 25 publications

References 10 publications

Effect of the Concentration of NaBH4 and N2H4 as Reductant Agent on the Synthesis of Copper Oxide Nanoparticles and its Potential Antimicrobial Applications

Effect of the Concentration of NaBH4 and N2H4 as Reductant Agent on the Synthesis of Copper Oxide Nanoparticles and its Potential Antimicrobial Applications

Formation of Cu2O Solid Solution via High-Frequency Electromagnetic Field-Assisted Ball Milling: The Reaction Mechanism

Synthesis of Mn3O4 Nanoparticles for Catalytic Application via Ultrasound‐Assisted Ball Milling

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Synthesis of Mn₃O₄ Nanoparticles for Catalytic Application via Ultrasound‐Assisted Ball Milling