Control of the substituent at the nitrogen atom in a 2,4,6-triphenylpyridinium perchlorates tunes the electrocatalytic hydrogen evolution mechanism and efficiency

Dolganov, Alexander V.; Chernyaeva, O.Y.; Kostryukov, S. G.; Balandina, A. V.; Solovyova, E.O.; Yudina, A. D.; Akhmatova, Anna; Lyukshina, Y.I.

doi:10.1016/j.ijhydene.2019.10.175

Cited by 18 publications

(10 citation statements)

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“…As compared to those reported non‐metallic macrocycle of the porphyrin family, such as tetra(pentafluorophenyl) porphyrin, [31] TPP, [32] MPyTPP, [32] BrTPP, [32] MeOTPP, [32] and xanthene‐bridged bis‐corrole, [33] the current (TPFC)P V (OH) 2 achieved the highest TOF (31.75 s −1 ) at the lowest overpotential of 900 mV. Also, (TPFC)P V (OH) 2 exhibited better HER performance than most listed other non‐metallic electrocatalysts except for N ‐methyl‐triphenylpyridinium perchlorate [34] (TOF=155 s −1 , η =900 mV). Basically, (TPFC)P V (OH) 2 can be considered as a molecular catalyst with good performance for HER with its lower overpotential in the homogeneous system.…”

Section: Resultsmentioning

confidence: 99%

Non‐Metallic Phosphorus Corrole as Efficient Electrocatalyst in Hydrogen Evolution Reaction

et al. 2022

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The economical consideration of using an electrocatalyst in energy-related field, composed of non-precious/sustainable elements is quite noteworthy. In this work, the phosphorus(V) complex of tris-(pentafluorophenyl)corrole [(TPFC)P V (OH) 2 ] was reported as electrocatalyst for the hydrogen evolution reaction (HER). The electrochemical studies revealed that the HER experienced a ECEC pathway (E: electron transfer step, C: chemical step), and the possible intermediate [P V ]À H species was suggested. (TPFC)P V (OH) 2 displayed excellent HER activity in dimethylformamide (DMF) with trifluoroacetic acid (TFA) as the proton source, and the turnover frequency (TOF) reached 31.75 s À 1 at an overpotential of 900 mV. Interestingly, the HER electrocatalytic performance remained extraordinary even applying water as a proton source in acetonitrile/water (v/v = 2 : 3), with a TOF of 18.40 mol H 2 mol cat À 1 h À 1 at an overpotential of 900 mV.

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Section: Resultsmentioning

confidence: 99%

Non‐Metallic Phosphorus Corrole as Efficient Electrocatalyst in Hydrogen Evolution Reaction

et al. 2022

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“…[ 159 ] Ni molecular complexes consisting of bis(diphenylphosphanyl)amine ligands also have excellent stability but with relatively lower TOF 368.59–585.17 s –1 in trifluoroacetic acid‐containing solutions. [ 160 ] Moreover, Cu‐based [ 161 , 162 ] and metal‐free molecular complexes, e.g., 2,4,6‐triphenylpyridinium perchlorates, [ 163 ] have been developed for HER. In general, although high TOF values are obtained with these homogeneous molecule catalysts, the overall activity is still significantly lower than in the presence of heterogeneous catalysts, as discussed above.…”

Section: Design Of Fluid Homogeneous Electrolysis Systemmentioning

confidence: 99%

Strategies for Electrochemically Sustainable H₂ Production in Acid

Hou

Quan

et al. 2022

Advanced Science

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Acidified water electrolysis with fast kinetics is widely regarded as a promising option for producing H 2 . The main challenge of this technique is the difficulty in realizing sustainable H 2 production (SHP) because of the poor stability of most electrode catalysts, especially on the anode side, under strongly acidic and highly polarized electrochemical environments, which leads to surface corrosion and performance degradation. Research efforts focused on tuning the atomic/nano structures of catalysts have been made to address this stability issue, with only limited effectiveness because of inevitable catalyst degradation. A systems approach considering reaction types and system configurations/operations may provide innovative viewpoints and strategies for SHP, although these aspects have been overlooked thus far. This review provides an overview of acidified water electrolysis for systematic investigations of these aspects to achieve SHP. First, the fundamental principles of SHP are discussed. Then, recent advances on design of stable electrode materials are examined, and several new strategies for SHP are proposed, including fabrication of symmetrical heterogeneous electrolysis system and fluid homogeneous electrolysis system, as well as decoupling/hybrid-governed sustainability. Finally, remaining challenges and corresponding opportunities are outlined to stimulate endeavors toward the development of advanced acidified water electrolysis techniques for SHP.

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“…Alongside heterogeneous systems, significant attention is paid to homogeneous molecular catalysts, as their structural adaptation to the reaction conditions for maximum efficiency is possible. [12][13][14][15][16] In the search for more affordable systems, researchers have praised catalysts based on transition metals as copper, 17 cobalt, 18,19 molybdenum, 20 and nickel. 21 Among them, the most stable complexes contain bidentate ligands such as 2,2′-bipyridine, 1,10phenanthroline, and their derivatives.…”

Section: Introductionmentioning

confidence: 99%

The electrocatalytic hydrogen evolution reaction in the presence of a metal-free organic catalyst based on 1,10-phenanthroline: the first example of a reaction proceeding by an intramolecular mechanism

Dolganov,

Yudina,

Boykova

et al. 2024

Catal. Sci. Technol.

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Control of the substituent at the nitrogen atom in a 2,4,6-triphenylpyridinium perchlorates tunes the electrocatalytic hydrogen evolution mechanism and efficiency

Cited by 18 publications

References 50 publications

Non‐Metallic Phosphorus Corrole as Efficient Electrocatalyst in Hydrogen Evolution Reaction

Non‐Metallic Phosphorus Corrole as Efficient Electrocatalyst in Hydrogen Evolution Reaction

Strategies for Electrochemically Sustainable H₂ Production in Acid

The electrocatalytic hydrogen evolution reaction in the presence of a metal-free organic catalyst based on 1,10-phenanthroline: the first example of a reaction proceeding by an intramolecular mechanism

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Control of the substituent at the nitrogen atom in a 2,4,6-triphenylpyridinium perchlorates tunes the electrocatalytic hydrogen evolution mechanism and efficiency

Cited by 18 publications

References 50 publications

Non‐Metallic Phosphorus Corrole as Efficient Electrocatalyst in Hydrogen Evolution Reaction

Non‐Metallic Phosphorus Corrole as Efficient Electrocatalyst in Hydrogen Evolution Reaction

Strategies for Electrochemically Sustainable H2 Production in Acid

The electrocatalytic hydrogen evolution reaction in the presence of a metal-free organic catalyst based on 1,10-phenanthroline: the first example of a reaction proceeding by an intramolecular mechanism

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Product

Resources

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Strategies for Electrochemically Sustainable H₂ Production in Acid