Why the size of copper nanoparticles depends on the nature of the reducing agent in the preparation of sols in a cationic polyelectrolyte solution

Litmanovich, O. E.; Tatarinov, V. S.; Litmanovich, A. A.

doi:10.1134/s1560090411040051

Cited by 6 publications

(3 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, NaBH 4 can reduce Cu 2+ ions to their lowest oxidation states (Cu 0 or Cu + ). NaBH 4 is a powerful reducing agent, due to 1) the evolution of hydrogen [37,39,45]; 2) the ability for NaBH 4 to directly reduce Cu 2+ ions to Cu 0 [36,38,46]; 3) due to its ability to directly reduce Cu 2+ ions to Cu 0 .…”

Section: Resultsmentioning

confidence: 99%

“…For example, the use of hydrazine favors the formation of small metal particles, because the oxidation of the reducing agent generates N 2 in the solution. This is equivalent to keeping the solution purged with inert gas; thus, oxidation can be avoided for prolonged periods [ 38 ]. Moreover, H 2 gas has also been used for the reduction of Cu 2+ , and this results in the formation of Cu 2 O NPs and Cu NPs with sizes of between 30 and 120 nm.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Easy, Quick, and Reproducible Sonochemical Synthesis of CuO Nanoparticles

et al. 2019

View full text Add to dashboard Cite

Copper oxide nanoparticles (CuO NPs) were synthesized in air by reducing copper (II) sulfate pentahydrate salt (CuSO4·5H2O) in the presence of sodium borohydride. The reaction was stabilized with Hexadecyltrimethylammonium bromide (CTAB) in a basic medium and using ultrasound waves. Different molar ratios of CTAB:Cu2+ and NaBH4:Cu2+ were explored, to optimize the synthesis conditions, and to study the stability, size, and Zeta potential of the colloidal suspension. Optimum conditions to generate spherical, stable, and monodispersed nanoparticles with hydrodynamic diameters of 36 ± 1.3 nm were obtained, using 16 mM CTAB and 2 M NaBH4 (molar ratios Cu2+:CTAB:NaBH4 of 1:6:10). X-ray diffraction (XRD) was implemented, and a monoclinic CuO crystal system was formed. This demonstrated a monoclinic crystal system corresponding to CuO. The diffraction peaks were identified and confirmed according to their selected area electron diffraction (SAED) patterns.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Easy, Quick, and Reproducible Sonochemical Synthesis of CuO Nanoparticles

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Presently, methods of manufacturing metal nanoparticles are as follows: radiation method [3]; microemulsion [4]; electrolytic [5,6]; vapor phase evaporative [6]; supercritical drying [6]; mechano-chemical [7]; plasma heating [8]; liquid reduction [9][10][11][12][13][14], etc.…”

Section: Introductionmentioning

confidence: 99%

The Method for Producing Copper Nanoparticles and Analysis of their Lubricating Ability

Kim

Mansurov

2017

SSP

View full text Add to dashboard Cite

In this paper described the possibility for using the copper nanoparticles as additives to lubricating oil. Copper nanoparticle has a decreased melting point and low shearing strength, therefore, the particles exhibit a high degree of slip. Adding copper nanoparticles to lubricating oil, can reduce the friction and wear of the friction surfaces, increase engine power, while reducing air pollution with an increase operating life of the engine. In this paper also described the liquid reduction process as a method for copper nanoparticle manufacture, which can be carried out without expensive special equipment. Generally in the process of gathering products – nanoparticles need to use the ultracentrifuge, and there is the phenomenon of aggregation of nanoparticles. In this paper obtained copper nanoparticles with dimensions of 30-80 nm without using the ultracentrifuge by adding organic solvent to a solution of the reduction reaction. Also presented the test results for friction and wear of the parts in the environment of the lubricating oil added copper nanoparticles. The experimental test results confirmed the theoretical assumption that copper nanoparticles improve the operational properties of the oil and reduce the abrasion of the surface of friction parts.

show abstract

Hydrazine borane: synthesis, characterization, and application prospects in chemical hydrogen storage

Moury

Moussa

Demirci

et al. 2012

Phys. Chem. Chem. Phys.

136

157

View full text Add to dashboard Cite

Hydrazine borane (N(2)H(4)BH(3)) is the novel boron- and nitrogen-based material appearing to be a promising candidate in chemical hydrogen storage. It stores 15.4 wt% of hydrogen in hydridic and protic forms, and the challenge is to release H(2) with maximum efficiency, if possible all hydrogen stored in the material. An important step to realize this ambitious goal is to synthesize HB with high yields and high purity, and to characterize it fully. In this work, we report a 2-step synthesis (salt metathesis and solvent extraction-drying) through which N(2)H(4)BH(3) is successfully obtained in 3 days, with a yield of about 80% and a purity of 99.6%. N(2)H(4)BH(3) was characterized by NMR, IR, XRD, TGA and DSC, its stability in dioxane and water was determined, and its thermolysis by-products were characterized. We thus present a complete data sheet that should be very useful for future studies. Furthermore, we propose a discussion on the potential of HB (with H(2) released by either thermolysis or hydrolysis) in chemical hydrogen storage.

show abstract

Why the size of copper nanoparticles depends on the nature of the reducing agent in the preparation of sols in a cationic polyelectrolyte solution

Cited by 6 publications

References 15 publications

Easy, Quick, and Reproducible Sonochemical Synthesis of CuO Nanoparticles

Easy, Quick, and Reproducible Sonochemical Synthesis of CuO Nanoparticles

The Method for Producing Copper Nanoparticles and Analysis of their Lubricating Ability

Hydrazine borane: synthesis, characterization, and application prospects in chemical hydrogen storage

Contact Info

Product

Resources

About