Synthesis and properties of Cu/CuO nanostructures obtained by electrochemical deposition

Kenzhina, I.; Zdorovets, Maxim V.; Kozlovskiy, Artem L.; Кадыржанов, К. К.

doi:10.1088/2053-1591/aab7a7

Cited by 11 publications

(2 citation statements)

References 26 publications

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“…There are several methods for the synthesis of CuO NSs in the literature, such as hydrothermal production [ 16 , 17 ], microwave-mediated synthesis [ 18 ], aerosol pyrolysis [ 19 ], electrochemical deposition [ 20 , 21 ], etc. These methods can be divided into two groups: the first group includes methods for direct synthesis of CuO, and the second is based on the oxidation of copper nanostructures with various reagents or methods that yield an oxide form.…”

Section: Introductionmentioning

confidence: 99%

Cu/CuO Composite Track-Etched Membranes for Catalytic Decomposition of Nitrophenols and Removal of As(III)

et al. 2020

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One of the promising applications of nanomaterials is to use them as catalysts and sorbents to remove toxic pollutants such as nitroaromatic compounds and heavy metal ions for environmental protection. This work reports the synthesis of Cu/CuO-deposited composite track-etched membranes through low-temperature annealing and their application in catalysis and sorption. The synthesized Cu/CuO/poly(ethylene terephthalate) (PET) composites presented efficient catalytic activity with high conversion yield in the reduction of nitro aryl compounds to their corresponding amino derivatives. It has been found that increasing the time of annealing raises the ratio of the copper(II) oxide (CuO) tenorite phase in the structure, which leads to a significant increase in the catalytic activity of the composites. The samples presented maximum catalytic activity after 5 h of annealing, where the ratio of CuO phase and the degree of crystallinity were 64.3% and 62.7%, respectively. The catalytic activity of pristine and annealed composites was tested in the reduction of 4-nitroaniline and was shown to remain practically unchanged for five consecutive test cycles. Composites annealed at 140 °C were also tested for their capacity to absorb arsenic(III) ions in cross-flow mode. It was observed that the sorption capacity of composite membranes increased by 48.7% compared to the pristine sample and reached its maximum after 10 h of annealing, then gradually decreased by 24% with further annealing.

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Section: Introductionmentioning

confidence: 99%

Cu/CuO Composite Track-Etched Membranes for Catalytic Decomposition of Nitrophenols and Removal of As(III)

et al. 2020

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“…The interest in cobalt nanostructures and their oxide forms is due to the huge potential for their application in various fields of science and technology, due to their structural parameters and electromagnetic characteristics. As the production method, we chose the method of electrochemical synthesis, which has proven itself as a method of producing nanostructures with controlled geometry, structural parameters, and phase composition 43–47 .…”

Section: Introductionmentioning

confidence: 99%

Investigation of phase transformations and corrosion resistance in Co/CoCo2O4 nanowires and their potential use as a basis for lithium-ion batteries

Здоровец

Kozlovskiy

2019

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The paper is devoted to the study of the effect of thermal annealing on the change in the structural properties and phase composition of metal Co nanostructures, as well as the prospects of their use as anode materials for lithium-ion batteries. During the study, a four-stage phase transition in the structure of nanowires consisting of successive transformations of the structure (Со-FCC/Co-HCP) → (Со-FCС) → (Со-FCC/СоСо2О4) → (СоСо2О4), accompanied by uniform oxidation of the structure of nanowires with an increase in temperature above 400 °C. In this case, an increase in temperature to 700 °C leads to a partial destruction of the oxide layer and surface degradation of nanostructures. During life tests, it was found that the lifetime for oxide nanostructures exceeds 500 charge/discharge cycles, for the initial nanostructures and annealed at a temperature of 300 °С, the lifetimes are 297 and 411 cycles, respectively. The prospects of using Co/CoCo2O4 nanowires as the basis for lithium-ion batteries is shown.

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Electrical Characterization of Nanomaterials

Kozlovskiy

Kenzhina

Zdorovets

et al. 2022

Synthesis and Applications of Nanoparticles

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Synthesis and properties of Cu/CuO nanostructures obtained by electrochemical deposition

Cited by 11 publications

References 26 publications

Cu/CuO Composite Track-Etched Membranes for Catalytic Decomposition of Nitrophenols and Removal of As(III)

Cu/CuO Composite Track-Etched Membranes for Catalytic Decomposition of Nitrophenols and Removal of As(III)

Investigation of phase transformations and corrosion resistance in Co/CoCo2O4 nanowires and their potential use as a basis for lithium-ion batteries

Electrical Characterization of Nanomaterials

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