Kinetic Characteristics of Hydrogen Transfer Through Palladium-Modified Membrane

Петриев, И. С.; Frolov, V. Yu.; Болотин, С. Н.; Барышев, М. Г.; Копытов, Г. Ф.

doi:10.1007/s11182-018-1258-0

Cited by 13 publications

(3 citation statements)

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“…During study of isotopic composition of samples of bottled and packaged waters of the world, several scientific groups defined the following range of fluctuations: δ 2 H from −147‰ to 15‰ and δ 18 O from −19.1‰ to 3.0‰ [44,45,46]. Although as it was shown earlier the bottled mineral waters usually have insignificant differences in deuterium content and even smaller fluctuations in concentration of oxygen-18, modern technologies allow us to obtain deuterium-depleted water (DDW) (with deuterium content till δ 2 H = −968‰) and oxygen-18 depleted water (reduction till 26.1% in comparison with 18 O VSMOW ) [47,48,49,50,51].…”

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confidence: 99%

Deuterium-Depleted Water Influence on the Isotope 2H/1H Regulation in Body and Individual Adaptation

et al. 2019

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This review article presents data about the influence of deuterium-depleted water (DDW) on biological systems. It is known that the isotope abundances of natural and bottled waters are variable worldwide. That is why different drinking rations lead to changes of stable isotopes content in body water fluxes in human and animal organisms. Also, intracellular water isotope ratios in living systems depends on metabolic activity and food consumption. We found the 2H/1H gradient in human fluids (δ2H saliva >> δ2H blood plasma > δ2Hbreast milk), which decreases significantly during DDW intake. Moreover, DDW induces several important biological effects in organism (antioxidant, metabolic detoxification, anticancer, rejuvenation, behavior, etc.). Changing the isotope 2H/1H gradient from “2H blood plasma > δ2H visceral organs” to “δ2H blood plasma << δ2H visceral organs” via DDW drinking increases individual adaptation by isotopic shock. The other possible mechanisms of long-term adaptation is DDW influence on the growth rate of cells, enzyme activity and cellular energetics (e.g., stimulation of the mitochondrion activity). In addition, DDW reduces the number of single-stranded DNA breaks and modifies the miRNA profile.

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Section: Introductionmentioning

confidence: 99%

Deuterium-Depleted Water Influence on the Isotope 2H/1H Regulation in Body and Individual Adaptation

et al. 2019

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“…Changes in deuterium content can have a profound effect on the physiological processes in the body [ 1 , 2 ]. The creation of modern methods for deuterium-depleted water (DDW) production [ 3 , 4 , 5 , 6 , 7 ] has made possible the targeted regulation of HDO molecule levels in drinking water while tracking the response of various organs and body systems.…”

Section: Introductionmentioning

confidence: 99%

Electrophysiological Activity and Survival Rate of Rats Nervous Tissue Cells Depends on D/H Isotopic Composition of Medium

et al. 2021

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The deuterium content modification in an organism has a neuroprotective effect during the hypoxia model, affecting anxiety, memory and stress resistance. The aim of this work was to elucidate the possible mechanisms of the medium D/H composition modification on nerve cells. We studied the effect of an incubation medium with a 50 ppm deuterium content compared to a medium with 150 ppm on: (1) the activity of Wistar rats’ hippocampus CA1 field neurons, (2) the level of cultured cerebellar neuron death during glucose deprivation and temperature stress, (3) mitochondrial membrane potential (MMP) and the generation of reactive oxygen species in cultures of cerebellar neurons. The results of the analysis showed that the incubation of hippocampal sections in a medium with a 50 ppm deuterium reduced the amplitude of the pop-spike. The restoration of neuron activity was observed when sections were returned to the incubation medium with a 150 ppm deuterium content. An environment with a 50 ppm deuterium did not significantly affect the level of reactive oxygen species in neuron cultures, while MMP decreased by 16–20%. In experiments with glucose deprivation and temperature stress, the medium with 50 ppm increased the death of neurons. Thus, a short exposure of nerve cells in the medium with 50 ppm deuterium acts as an additional stressful factor, which is possibly associated with the violation of the cell energy balance. The decrease in the mitochondrial membrane potential, which is known to be associated with ATP synthesis, indicates that this effect may be associated with the cell energy imbalance. The decrease in the activity of the CA1 field hippocampal neurons may reflect reversible adaptive changes in the operation of fast-reacting ion channels.

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“…Ранее нами было установлено, что скорость проникновения водорода для достаточно тонких палладиевых мембран (<10 мкм) в условиях низкой температуры (< 90 °С) и давления (< 0,6 МПа) ограничена стадией диссоциативно-ассоциативных процессов на границах и может быть значительно (до порядка раз) увеличена за счёт ускорения лимитирующей стадии процесса посредством образования на поверхности палладиевого нанопористого покрытия [14]. Известно, что образование на поверхности мембран разветвлённых структур (нанозвёзд) повышает адсорбционную активность поверхности, что сказывается на каталитической активности материала по отношению к реакциям с участием водорода [15]…”

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Synthesis and gas transport parameters of membranes modified by starshaped nanocrystalline palladium

Петриев

Болотин

Frolov

et al. 2019

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Methods have been developed to modify the surface of Pd-23%Ag alloy films in order to increase the rate of hydrogen transfer with appearance of palladium coatings of the “nanostar” and “nanopore” types. The gas transport parameters of the membranes which surface is activated using the developed methods were investigated. The modification of surface of Pd-Ag films synthesized by star-like palladium nanocrystallites allows achieving a hydrogen flux density of up to 0.75 mmol / (s × m2) - that is 1.7 times more than in case of modification modified by “nanopore” type coating of sufficiently thin palladium membranes (< 10 µm) under low temperature (<100 °C) and pressure (<0.6 MPa).

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Kinetic Characteristics of Hydrogen Transfer Through Palladium-Modified Membrane

Cited by 13 publications

References 4 publications

Deuterium-Depleted Water Influence on the Isotope 2H/1H Regulation in Body and Individual Adaptation

Deuterium-Depleted Water Influence on the Isotope 2H/1H Regulation in Body and Individual Adaptation

Electrophysiological Activity and Survival Rate of Rats Nervous Tissue Cells Depends on D/H Isotopic Composition of Medium

Synthesis and gas transport parameters of membranes modified by starshaped nanocrystalline palladium

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Kinetic Characteristics of Hydrogen Transfer Through Palladium-Modified Membrane

Cited by 13 publications

References 4 publications

Deuterium-Depleted Water Influence on the Isotope 2H/1H Regulation in Body and Individual Adaptation

Deuterium-Depleted Water Influence on the Isotope 2H/1H Regulation in Body and Individual Adaptation

Electrophysiological Activity and Survival Rate of Rats Nervous Tissue Cells Depends on D/H Isotopic Composition of Medium

Synthesis and gas transport parameters of membranes modified by star­shaped nanocrystalline palladium

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Synthesis and gas transport parameters of membranes modified by starshaped nanocrystalline palladium