Study of Electrodeposited Copper Coatings Obtained with the Addition of Electroerosion-Copper Nanoparticles

Aim and Objective: The present study was performed with the aim to develop an efficient and environmentally benign protocol for the synthesis of biologically siginifcant 3, 4-dihydropyrano[c]chromenes using a new catalytic material. The protocol involves the use of a reusable, environment friendly materials and solvents with operational simplicity. Materials and Methods: Carbon microsphere supported copper nanoparticles (Cu-NP/C) prepared from loaded cation exchange resin were synthesized, characterized with well versed analytical techniques such as XRD, SEM and Raman spectroscopy and the synthesized material was used as a catalyst for the environmentally benign synthesis of 3,4-dihydropyrano[c]chromenes. Results: The formation of carbon microsphere supported copper nanoparticles (Cu-NP/C) prepared from loaded cation exchange resin was confirmed by XRD, SEM and Raman spectroscopy which was employed as a heterogeneous material for the synthesis of 3,4-dihydropyrano[c]chromenes. The products formed were characterized by the analysis of spectroscopic data - NMR, IR and mass. The safe catalytic system offers several advantages including operational simplicity, environmental friendliness, high yield, and reusability of catalyst and green chemical transformation. Conclusion: Herein we report an easy and efficient protocol for the one-pot synthesis of dihydropyrano[ c]chromenes using environmentally benign MCR approach in ethanol as the green solvent. The method developed herein constitutes a valuable addition to the existing methods for the synthesis of titled compounds.

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Biogenic synthesis of copper nanoparticles from rose (Rosa indica L.) and their applications in photocatalytic degradation of Malachite Green and Carbol Fuchsin dyes

Nanoscience &Nanotechnology-Asia ◽

10.2174/2210681210999200801030056 ◽

2020 ◽

Vol 10 ◽

Author(s):

Manmeet Kaur ◽

Suman Prajapati ◽

Samneek Cholia ◽

Jaskeet Singh Mann ◽

Gurpreet Singh

Keyword(s):

Photocatalytic Degradation ◽

Malachite Green ◽

Copper Nanoparticles ◽

Dye Degradation ◽

Industrial Effluent ◽

Copper Nanoparticle ◽

Synthesis Of Nanoparticles ◽

Carbol Fuchsin ◽

Double Beam ◽

The Rose

Background: In the recent years, the green synthesis of nanoparticles has taken a lead role over the conventional chemical and physical approach due to its non-toxic, cost effective parameters and has found its place in various applications. Objectives: The major objectives of this study was to synthesise and characterize the copper nanoparticles using the rose extract at different set of conditions and analyse these nanoparticles as a source of dye degradation agent under sunlight conditions. Methods: Present study was conducted with the aim to synthesis the copper nanoparticle using the rose petal extract. The components present the in the extract act as the reduction and stabilization agents for the synthesis of CuNPs. The synthesized nanoparticles were characterized by using UV-VIS, FTIR, XRD and SEM analysis. Photocatalytic degradation of two dyes (Malachite Green and Carbol fuchsin) was analysed using double beam spectroscopic analysis Results: UV-Vis analysis indicated the presence of a peak at around 630 nm. The FT-IR analysis indicated the involvement of various biomolecules during the synthesis of nanoparticles. The structure and the conformation was elucidated using XRD and SEM showed the agglomerated form of the synthesized nanoparticles with the size range of about 60-90 nm. The synthesised copper nanoparticles was used for degradation of malachite green and carbol fuchsin dye using photocatalytic under sunlight irradiation. UV-Vis spectral analysis indicated that synthesised copper nanoparticle act more effective in degradation of malachite green (around 95%) whereas carbol fuchsin showed a maximum degradation by 52% therefore suggesting that CuNPs act as an efficient photo catalyst in dye degradation. Conclusion: The results obtained from this study indicates that rose extract has the potential of synthesis of copper nanoparticles which is non-toxic and convenient approach as compared to physical and chemical synthesis. These nanoparticles can be effectively employed as dye decolourization agents to treat industrial effluent and prevent the environmental pollution.

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High purity copper nanoparticles via sonoelectrochemical approach

Materials Research Express ◽

10.1088/2053-1591/ab48b6 ◽

2019 ◽

Vol 6 (11) ◽

pp. 115058 ◽

Cited By ~ 3

Author(s):

Muhammad Murtaza ◽

Naveed Hussain ◽

Huang Ya ◽

Hui Wu

Keyword(s):

Copper Nanoparticles ◽

High Purity ◽

Purity Copper

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C–C and C–N Couplings Catalyzed by Copper Nanoparticles in Glycerol

Synfacts ◽

10.1055/s-0036-1592029 ◽

2017 ◽

Vol 13 (12) ◽

pp. 1322

Keyword(s):

Copper Nanoparticles

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Large-scale synthesis of copper nanoparticles by chemically controlled reduction for applications of inkjet-printed electronics

Nanotechnology ◽

10.1088/0957-4484/19/41/415604 ◽

2008 ◽

Vol 19 (41) ◽

pp. 415604 ◽

Cited By ~ 353

Author(s):

Youngil Lee ◽

Jun-rak Choi ◽

Kwi Jong Lee ◽

Nathan E Stott ◽

Donghoon Kim

Keyword(s):

Copper Nanoparticles ◽

Large Scale ◽

Printed Electronics ◽

Large Scale Synthesis

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Antimicrobial Property of Polypropylene Composites and Functionalized Copper Nanoparticles

Polymers ◽

10.3390/polym13111694 ◽

2021 ◽

Vol 13 (11) ◽

pp. 1694

Author(s):

Noemi Jardón-Maximino ◽

Gregorio Cadenas-Pliego ◽

Carlos A. Ávila-Orta ◽

Víctor Eduardo Comparán-Padilla ◽

Luis E. Lugo-Uribe ◽

...

Keyword(s):

Copper Nanoparticles ◽

Crystallization Process ◽

Copper Ions ◽

Antimicrobial Property ◽

Aminobutyric Acid ◽

New Materials ◽

Melt Mixing ◽

Polypropylene Composites ◽

And Staphylococcus Aureus ◽

Thermal Stability Of

Copper nanoparticles (CuNPs) functionalized with polyethyleneimine (PEI) and 4-aminobutyric acid (GABA) were used to obtain composites with isotactic polypropylene (iPP). The iPP/CuNPs composites were prepared at copper concentrations of 0.25–5.0 wt % by melt mixing, no evidence of oxidation of the CuNP was observed. Furthermore, the release of copper ions from iPP/CuNPs composites in an aqueous medium was studied. The release of cupric ions was higher in the composites with 2.5 and 5.0 wt %. These composites showed excellent antibacterial activity (AA) toward Pseudomona aeruginosa (P. aeruginosa) and Staphylococcus aureus (S. aureus). The incorporation of CuNP into the iPP polymeric matrix slightly decreased the thermal stability of the composite material but improved the crystallinity and the storage modulus. This evidence suggests that CuNPs could work as nucleating agents in the iPP crystallization process. The iPP/CuNPs composites presented better AA properties compared to similar composites reported previously. This behavior indicates that the new materials have great potential to be used in various applications that can be explored in the future.

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Copper nanoparticles loaded polymer vesicles as environmentally amicable nanoreactors: A sustainable approach for cascading synthesis of benzimidazole

Journal of Molecular Liquids ◽

10.1016/j.molliq.2021.116217 ◽

2021 ◽

pp. 116217

Author(s):

Falguni Shukla ◽

Manita Das ◽

Sonal Thakore

Keyword(s):

Copper Nanoparticles ◽

Polymer Vesicles

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Aluminum and copper deposition through the process of thermal flame spray on polypropylene-pine wood fiber composite filaments and their applications

Journal of Composite Materials ◽

10.1177/00219983211036503 ◽

2021 ◽

pp. 002199832110365

Author(s):

Sônia MA Veroneze ◽

Thais HS Flores-Sahagun ◽

Ramón SC Paredes ◽

Kestur Gundappa Satyanarayana

Keyword(s):

Fiber Composite ◽

Wood Fiber ◽

Physical And Mechanical Properties ◽

Heat Treating ◽

Flame Spray ◽

Pine Wood ◽

Thermal Spray Process ◽

Spray Process ◽

Copper Coatings ◽

Study Results

This paper presents a study about polypropylene-pine wood composites, both as filaments and products, coated with aluminum (Al) or copper (Cu), obtained through flame thermal spray process after subjecting the composites to thermal treatments in the second and third step of the study. Results revealed that a previous aluminum layer was needed in order to obtain copper coatings on the composites. The physical and mechanical properties of both metal coated composite filaments were also evaluated and compared with the uncoated composite filaments with and without heat treating these. Consequently, it was observed that the nature of the coating adhesion on the substrates was mechanical, and therefore abrasion blasting of filaments or the use of a higher wood fiber content in the composite improved the Al or Cu adhesion. Also, it was observed that extruded wood fiber/PP filaments should not be cooled in water because pieces might be molded directly once the moisture affects the metal coatings adhesion onto the substrates.

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