Modifying the surface of a hydrogen permselective palladium–silver membrane

Петриев, И. С.; Болотин, С. Н.; Frolov, V. Yu.; Barishev, M. G.; Isaev, V. A.; Копытов, Г. Ф.

doi:10.3103/s1062873816060241

Cited by 13 publications

(4 citation statements)

References 4 publications

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“…Metal nanoparticles with certain facets and shapes differ from bulk materials in terms of thermal, optical, electrical, and magnetic aspects due to their unique morphology and size effects. This makes them promising materials in the field of catalysis [1,2], spectroscopy [3], nanomedicine [4,5], electronics [6,7], energy conversion [8], and hydrogen energy, including high-purity hydrogen evolution (99.999% purity) [9][10][11][12], etc. The branch of synthesis of functional nanostructured coatings with a greater specific active surface area and improved catalytic, protective, and other necessary properties is of great interest [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Dependence of Electrocatalytic Activity of Copper and Palladium Nanoparticles on Morphology and Shape Formation

et al. 2023

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A synthesis strategy for the manufacture of inexpensive highly efficient nanostructured catalysts has been developed. The developed unique nonplatinoid copper-based catalysts with different surface morphology were investigated as a functional layer with high activity in the ethanol oxidation in alkaline media. A modifying layer with controlled morphology, composition, and excellent electrocatalytic activity was synthesized by electrochemical deposition by varying such synthesis parameters as deposition temperature and time, concentration of structure-forming additives, and electrodeposition current. The dependence of the samples’ electrocatalytic activity on the shaping factors was established. According to the electrochemical study results, the highest current density peak of up to 33.01 mA cm−2, and hence the highest catalytic activity in comparison to other samples, were possessed by a catalyst with a regular cubic particle shape. A catalyst consisting of plate-like nanoparticles with a certain percentage of disclinations had similar, but slightly less activity, with a current density peak of up to 31.59 mA cm−2. The samples’ activity values are 8 times higher for cubic particles and 7.5 times higher for particles with a triangular plate shape than for an unmodified smooth copper film. The developed samples can be considered as quite competitive to platinoid catalysts, which significantly outperform copper analogues.

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Section: Introductionmentioning

confidence: 99%

Investigation of the Dependence of Electrocatalytic Activity of Copper and Palladium Nanoparticles on Morphology and Shape Formation

et al. 2023

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“…Таким образом, становится целесообразным изучение динамики процессов образования AgNPs на поверхности различных материалов, имеющих медицинское назначение [7,8]. Необходимо учитывать, что свойства синтезируемых наночастиц будут разниться в зависимости от условий их синтеза, физико-химических свойств используемых веществ [9][10][11][12][13]. Поэтому получаемые наночастицы серебра могут быть различны по размеру, агрегативной и седиментационной устойчивости, а также антимикробной активности [14][15][16][17][18].…”

Section: Introductionunclassified

Physical and Mathematical Model of the Process of Synthesis of Silver Nanoparticles

SHASHKOV,

MALYSHKO,

DROBOTENKO

et al. 2023

EBRC BSEC

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Аннотация. В статье рассматривается физико-математическая модель процесса синтеза наночастиц серебра методом кавитационно-диффузионного фотохимического восстановления. Исследовано влияние мощности ультрафиолетового излучения на скорость синтеза наночастиц. Установлено, что при уменьшении мощности УФ излучения увеличивается общая длительность синтеза наночастиц серебра. Также уменьшается скорость самих химических реакций из-за уменьшения количества ОН − и, как следствие, уменьшения концентрации е − .

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“…Although the method of vacuum therapy of wounds plays a special role, including the use of combined antibacterial drugs (primarily in the treatment of postoperative wounds with a high risk of developing a surgical infection [ 1 , 2 , 3 , 4 ]), one of the most significant areas of prevention of wound suppuration is the use of formulations based on silver, for example, in the form of nanoparticles [ 5 , 6 , 7 ]. It should be taken into account that the properties of the obtained nanoparticles will largely change depending on the conditions of their synthesis, physicochemical properties of reducing agents and stabilizers [ 8 , 9 , 10 , 11 ]. Therefore, the synthesized silver nanoparticles (AgNPs) can differ significantly in size, sedimentation, and aggregate stability, and, consequently, in antimicrobial activity [ 12 , 13 , 14 , 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Changes in Number and Antibacterial Activity of Silver Nanoparticles on the Surface of Suture Materials during Cyclic Freezing

et al. 2022

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This article presents the results of the 10-fold cyclic freezing (−37.0 °C) and thawing (0.0 °C) effect on the number and size range of silver nanoparticles (AgNPs). AgNPs were obtained by the cavitation-diffusion photochemical reduction method and their sorption on the fiber surface of various suture materials, perlon, silk, and catgut, was studied. The distribution of nanoparticles of different diameters before and after the application of the cyclic freezing/thawing processes for each type of fibers studied was determined using electron microscopy. In general, the present study demonstrates the effectiveness of using the technique of 10-fold cyclic freezing. It is applicable to increase the absolute amount of AgNPs on the surface of the suture material with a simultaneous decrease in the size dispersion. It was also found that the application of the developed technique leads to the overwhelming predominance of nanoparticles with 1 to 15 nm diameter on all the investigated fibers. In addition, it was shown that after the application of the freeze/thaw method, the antibacterial activity of silk and catgut suture materials with AgNPs was significantly higher than before their treatment by cyclic freezing.

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Modifying the surface of a hydrogen permselective palladium–silver membrane

Cited by 13 publications

References 4 publications

Investigation of the Dependence of Electrocatalytic Activity of Copper and Palladium Nanoparticles on Morphology and Shape Formation

Investigation of the Dependence of Electrocatalytic Activity of Copper and Palladium Nanoparticles on Morphology and Shape Formation

Physical and Mathematical Model of the Process of Synthesis of Silver Nanoparticles

Changes in Number and Antibacterial Activity of Silver Nanoparticles on the Surface of Suture Materials during Cyclic Freezing

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