A new promising Pt(Mo2C) catalyst for hydrogen evolution reaction prepared by galvanic displacement reaction

Kuznetsov, V. V.; Podlovchenko, B. I.; Фролов, К. В.; Volkov, M. A.; Ханин, Д. А.

doi:10.1007/s10008-022-05222-x

Cited by 4 publications

(6 citation statements)

References 52 publications

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“…Technetium carbide Tc x C cannot be a catalyst for the hydrogen reaction in hydrogen energy but could be a suitable support for platinum or palladium nanoclusters. The deposition of a noble metal under open-circuit conditions is a simple and convenient method for the preparation of such catalysts. , To assess the possibility of using the currentless deposition method for the synthesis of catalysts, it is necessary to obtain information about the anodic behavior of technetium carbide. Oxidation of the Tc x C electrode surface at E = 0.57–0.70 V (Figure a, first scan) can be used to deposit noble metals by the redox reaction between the Tc x C–C nanocomposite and soluble platinum metal compounds by analogy with molybdenum, niobium, and zirconium carbides. , The most probable products of Tc x C oxidation are hydrated technetium oxides TcO y · n H 2 O.…”

Section: Resultsmentioning

confidence: 99%

“…It is known that even very small amounts of platinum deposited onto the surface of carbides will provide a stable catalytic effect toward the hydrogen evolution reaction (HER). 17,18 Hydrogen production using Pt(Tc−C) cathodes can be organized within the framework of nuclear chemical reprocessing using the energy of nuclear power plants.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Technetium–carbon nanocomposites can also be considered as catalytic supports for platinum (or palladium) nanoclusters in the electrochemical production of hydrogen. It is known that even very small amounts of platinum deposited onto the surface of carbides will provide a stable catalytic effect toward the hydrogen evolution reaction (HER). , Hydrogen production using Pt(Tc–C) cathodes can be organized within the framework of nuclear chemical reprocessing using the energy of nuclear power plants.…”

Section: Introductionmentioning

confidence: 99%

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Route to Stabilization of Nanotechnetium in an Amorphous Carbon Matrix: Preparative Methods, XAFS Evidence, and Electrochemical Studies

Kuznetsov,

German,

Nagovitsyna

et al. 2023

Inorg. Chem.

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Technetium–carbon nanophases are obtained by thermal decomposition of pertechnetates with large organic cations under an argon atmosphere. Parallel carbonization of organic cations (hexamethyleneiminium and triphenylguanidinium), which occurs during the thermal decomposition of their pertechnetates, leads to the formation of X-ray amorphous solid products. An X-ray absorption fine structure study revealed that they have a crystal structure containing technetium–carbon bonds with a length of 1.76 Å. After subsequent annealing treatment at 1073–1673 K, the synthesized technetium–carbon phase has a cubic lattice with an a of 4.01 ± 0.03 Å. The products of thermal decomposition of the same perrhenates are also X-ray amorphous; however, unlike that of pertechnetates, the distance between rhenium and carbon atoms in them is significantly greater (2.14 Å). After subsequent annealing, they have a hexagonal lattice. The electrochemical properties of technetium–carbon nanophases prepared by thermal decomposition of pertechnetates with large organic cations are different from the properties of those prepared with metallic technetium. The oxidation of technetium carbide to its oxides at the electrode surface observed in the first anodic scan of cyclic voltammograms can be used for the deposition of noble metal nanoclusters under open-circuit conditions to prepare composite catalysts for the hydrogen evolution reaction. Nanotechnetium in the amorphous carbon matrix can also be a prospective material for reactor transmutation of technetium to stable isotopically pure ruthenium-100.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Route to Stabilization of Nanotechnetium in an Amorphous Carbon Matrix: Preparative Methods, XAFS Evidence, and Electrochemical Studies

Kuznetsov,

German,

Nagovitsyna

et al. 2023

Inorg. Chem.

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“…Many compounds based on transition metals have proved to be effective electrocatalysts. 9,27,45,55,57,68–95…”

Section: Electrochemical Production Of Hydrogenmentioning

confidence: 99%

“…Even at relatively low platinum loadings, a number of commercial electrodes constructed from Pt(Mo 2 C)-produced catalysts exhibit significant catalytic activity for the hydrogen evolution reaction (HER) in 0.5 M sulfuric acid solution. 73 Commercial electrodes made of Ni and Ti mesh function well, offer superior cathode materials, and cost less than electrodes made of Pt. 74 Other materials offer the best electrode materials for general application since they are less expensive than Pt-based electrodes and have good performance.…”

Section: Electrochemical Production Of Hydrogenmentioning

confidence: 99%

Electrochemical hydrogen production: sustainable hydrogen economy

Aslam,

Rani,

Lal

et al. 2023

Green Chem.

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An Overview of Hydrogen Energy Generation

AlZohbi

2024

ChemEngineering

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The global issue of climate change caused by humans and its inextricable linkage to our present and future energy demand presents the biggest challenge facing our globe. Hydrogen has been introduced as a new renewable energy resource. It is envisaged to be a crucial vector in the vast low-carbon transition to mitigate climate change, minimize oil reliance, reinforce energy security, solve the intermittency of renewable energy resources, and ameliorate energy performance in the transportation sector by using it in energy storage, energy generation, and transport sectors. Many technologies have been developed to generate hydrogen. The current paper presents a review of the current and developing technologies to produce hydrogen from fossil fuels and alternative resources like water and biomass. The results showed that reformation and gasification are the most mature and used technologies. However, the weaknesses of these technologies include high energy consumption and high carbon emissions. Thermochemical water splitting, biohydrogen, and photo-electrolysis are long-term and clean technologies, but they require more technical development and cost reduction to implement reformation technologies efficiently and on a large scale. A combination of water electrolysis with renewable energy resources is an ecofriendly method. Since hydrogen is viewed as a considerable game-changer for future fuels, this paper also highlights the challenges facing hydrogen generation. Moreover, an economic analysis of the technologies used to generate hydrogen is carried out in this study.

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A new promising Pt(Mo2C) catalyst for hydrogen evolution reaction prepared by galvanic displacement reaction

Cited by 4 publications

References 52 publications

Route to Stabilization of Nanotechnetium in an Amorphous Carbon Matrix: Preparative Methods, XAFS Evidence, and Electrochemical Studies

Route to Stabilization of Nanotechnetium in an Amorphous Carbon Matrix: Preparative Methods, XAFS Evidence, and Electrochemical Studies

Electrochemical hydrogen production: sustainable hydrogen economy

An Overview of Hydrogen Energy Generation

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