Mini review on H2 production from electrochemical water splitting according to special nanostructured morphology of electrocatalysts

Lee, Jung Eun; Jeon, Ki‐Joon; Show, Pau Loke; Lee, Im Hack; Jung, Sang‐Chul; Choi, Yong Jun; Rhee, Gwang Hoon; Lin, Kun‐Yi Andrew; Park, Young-Kwon

doi:10.1016/j.fuel.2021.122048

Cited by 97 publications

(43 citation statements)

References 51 publications

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“…More structures of diversely substituted porphyrins and metalloporphyrins proved their utility in acting as corrosion inhibitors for carbon–steel devices, working in both saline [ 9 , 10 , 11 ] and aggressive acid media [ 12 , 13 ]. Recently, as the global energy demand increases, and because hydrogen is considered to be a sustainable choice [ 14 , 15 ], its generation via the electrochemical water splitting method [ 16 , 17 ] involves porphyrins and metalloporphyrins as catalytic materials [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

One A3B Porphyrin Structure—Three Successful Applications

et al. 2022

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Porphyrins are versatile structures capable of acting in multiple ways. A mixed substituted A3B porphyrin, 5-(3-hydroxy-phenyl)-10,15,20-tris-(3-methoxy-phenyl)-porphyrin and its Pt(II) complex, were synthesised and fully characterised by 1H- and 13C-NMR, TLC, UV-Vis, FT-IR, fluorescence, AFM, TEM and SEM with EDX microscopy, both in organic solvents and in acidic mediums. The pure compounds were used, firstly, as sensitive materials for sensitive and selective optical and fluorescence detection of hydroquinone with the best results in the range 0.039–6.71 µM and a detection limit of 0.013 µM and, secondly, as corrosion inhibitors for carbon–steel (OL) in an acid medium giving a best performance of 88% in the case of coverings with Pt-porphyrin. Finally, the electrocatalytic activity for the hydrogen and oxygen evolution reactions (HER and OER) of the free-base and Pt-metalated A3B porphyrins was evaluated in strong alkaline and acidic electrolyte solutions. The best results were obtained for the electrode modified with the metalated porphyrin, drop-casted on a graphite substrate from an N,N-dimethylformamide solution. In the strong acidic medium, the electrode displayed an HER overpotential of 108 mV, at i = −10 mA/cm2 and a Tafel slope value of 205 mV/dec.

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Section: Introductionmentioning

confidence: 99%

One A3B Porphyrin Structure—Three Successful Applications

et al. 2022

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“…Hydrogen, as a renewable energy carrier can be produced by electrolysis of water under mild reaction conditions. The process provides an exciting design for obtaining access to sustainable renewable energy 4‐8 . Hydrogen can be produced without secondary pollutants by electrolyzing the water, making it a viable alternative to fossil fuels.…”

Section: Introductionmentioning

confidence: 99%

“…The process provides an exciting design for obtaining access to sustainable renewable energy. [4][5][6][7][8] Hydrogen can be produced without secondary pollutants by electrolyzing the water, making it a viable alternative to fossil fuels. Water electrolysis is the key alternative to traditional energy production processes (eg, reforming, combustion, etc.)…”

Section: Introductionmentioning

confidence: 99%

An inclusive perspective on the recent development of tungsten‐based catalysts for overall water‐splitting : A review

Abdullah

Ali

Pervaiz

et al. 2022

Intl J of Energy Research

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Summary The problems of energy shortages, environmental pollution and the ever‐increasing global population are creating serious concerns for mankind. For a sustainable future, it is essential to explore clean and renewable alternate energy sources. The green energy consumption model aims towards a future with a competent and sustainable hydrogen economy to fulfill the global energy demands. Water‐splitting is a promising method for clean hydrogen production. A highly active noble metal‐free catalyst is the main pre‐requisite, to make the process energy‐efficient and economical. An optimum catalyst lowers the energy required for the disassociation of water by driving down the overpotential of the process. Tungsten‐based materials are an considered effective catalyst for water‐splitting due to natural availability, environmental friendliness, high photostability, high electron mobility, large hole diffusion length and high catalytic activities. In recent years, a diverse range of tungsten‐based materials has been developed as photo/electro catalysts for water‐splitting. This review aims to present a comprehensive understanding and timely reference for the progress of tungsten‐based catalysts in this field. This study begins with the fundamental principle of water splitting and the properties of tungsten and its hybrids then moves on to different techniques for producing binary/ternary nanocomposites for overall water splitting. A comprehensive overview of the recent developments in tungsten‐based photo/electro catalysts for overall water splitting is then presented with the techniques to enhance the catalyst activity, such as morphological control, surface modification, heteroatom doping, and heterojunction construction. Finally, recommendations for the future are proposed.

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“…2 Among all the measures for H 2 production, electrocatalytic water splitting is considered to be the most facile and economical way for large-scale H 2 generation. 3–6 However, hindered by the sluggish dynamics of two determining half reactions, the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER), the kinetics of the overall water splitting reaction is still slow. 7–9 Therefore, seeking an efficient catalyst to improve the HER activity is necessary.…”

Section: Introductionmentioning

confidence: 99%