Physicochemical properties of copper nanoparticles synthesized by the different methods

Kirsankin, A. A.; Grishin, M. V.; Sarvadii, S. Yu.; Zamota, P. F.; Шуб, Б. Р.

doi:10.1134/s1990793117030186

Cited by 9 publications

(2 citation statements)

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“…During the calcination, the precursor solution decomposed with the formation of copper(II) oxide and gaseous nitrogen(IV) oxide and oxygen, which were pumped out of the chamber. The decomposition of anhydrous copper(II) nitrate at atmospheric pressure is known to begin at a temperature of 440 K [ 31 ]. The precursor decomposition occurs:

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Section: Methodsmentioning

confidence: 99%

Effect of CO Molecule Orientation on the Reduction of Cu-Based Nanoparticles

et al. 2021

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The adsorption of CO on the surface of Cu-based nanoparticles was studied in the presence of an external electric field by means of scanning tunneling microscopy (STM) and spectroscopy (STS). Nanoparticles were synthesized on the surface of a graphite support by the impregnation–precipitation method. The chemical composition of the surface of the nanoparticles was determined as a mixture of Cu2O, Cu4O3 and CuO oxides. CO was adsorbed from the gas phase onto the surface of the nanoparticles. During the adsorption process, the potential differences ΔV = +1 or −1 V were applied to the vacuum gap between the sample and the grounded tip. Thus, the system of the STM tip and sample surface formed an asymmetric capacitor, inside which an inhomogeneous electric field existed. The CO adsorption process is accompanied by the partial reduction of nanoparticles. Due to the orientation of the CO molecule in the electric field, the reduction was weak in the case of a positive potential difference, while in the case of a negative potential difference, the reduction rate increased significantly. The ability to control the adsorption process of CO by means of an external electric field was demonstrated. The size of the nanoparticle was shown to be the key factor affecting the adsorption process, and particularly, the strength of the local electric field close to the nanoparticle surface.

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…”

Section: Methodsmentioning

confidence: 99%

Effect of CO Molecule Orientation on the Reduction of Cu-Based Nanoparticles

et al. 2021

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“…45,46 Muraia and his coworkers prepared copper nanoparticles of 20-25 nm by evaporation of copper wire on oleic acid vapor/mist by using pulse wire technique. 47,48 Chemical Synthesis Method Chemical reduction method.-The chemical reduction method for the synthesis of copper nanoparticles is the easiest, simplest and most commonly used method where reduction of copper salts by using reducing agents such as polyols, 49,50 sodium borohydride, 51,52 hydrazine, 53,54 ascorbic acid. 55,56 Some capping agents can also be used which include polyethylene glycol 57,58 and poly (vinylpyrrolidone).…”

Section: Physical Methodsmentioning

confidence: 99%

Review—Multifunctional Copper Nanoparticles: Synthesis and Applications

Bhagat¹,

Anand²,

Sharma³

et al. 2021

ECS J. Solid State Sci. Technol.

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Copper nanomaterials due to their unique properties are rapidly finding place as an important component of next-generation material in various sectors such as electronics, machinery, construction, engineering, pharmaceutical, agriculture, energy, environment etc In fact in past decades, researchers have devoted several studies to Cu nanomaterials, and have achieved many innovative results from synthesis to applications, highlighting its immeasurable potential for extensive practical and theoretical applications holding great promises. This review emphasises on the recent progress made in synthesis of copper nanoparticles by various techniques such as physical, chemical and biological methods. The application section describes their utility in several sectors including agriculture, environment, construction, electronics etc Moreover, the emphasis was also laid to understand the uptake mechanism of the copper nanoparticles by plants, the toxicity caused at higher concentrations and the associated implications of exposure to both human and environmental health, including the challenges and difficulties to be addressed in the future.

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