Hydrogen production technologies: Attractiveness and future perspective

Dehghanimadvar, Mohammad; Shirmohammadi, Reza; Sadeghzadeh, Milad; Aslani, Alireza; Ghasempour, Roghaye

doi:10.1002/er.5508

Cited by 71 publications

(41 citation statements)

References 58 publications

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“…Growing concerns for a natural environment drive innovation toward novel, clean energy sources, and storage devices. [ 1,2 ] Among them, cheap but efficient water‐splitting devices are being developed, and great hopes are being put into light‐enabled catalysts. The titania‐based electrode materials are especially looked at, because of their abundance, flexibility, and high stability within a wide pH range.…”

Section: Figurementioning

confidence: 99%

Spectacular Oxygen Evolution Reaction Enhancement through Laser Processing of the Nickel‐Decorated Titania Nanotubes

Wawrzyniak

Karczewski

Coy

et al. 2020

Adv Materials Inter

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The selective, laser‐induced modification of the nickel‐decorated titania nanotubes provides remarkable enhancement toward oxygen evolution reaction. Particularly, the irradiation of the laterally spaced crystalline TiO2 nanotubes, results in the formation of the tight closure over irradiated end, preserving their hollow interior. The shape of the absorbance spectra is modulated along with applied energy, and the new absorption band appears at 500 nm, where the local minimum can be found for bare nanotubes. The high‐resolution X‐ray photoelectron spectra indicate the presence of both metallic and hydroxide forms of nickel species. The electrode material treated with 355 nm pulses at 50 mJ cm−2 shows significantly improved current densities in the anodic regime, reaching nearly 300 mA cm−2 while exposed to solar radiation, whereas the untreated sample barely comes to 1.5 mA cm−2 in the same conditions. The tailored titania photoanode also exhibits two orders of magnitude higher donor concentration in comparison to the primary substrate as verified by Mott–Schottky analysis. The electrochemical analysis confirms the key role of laser annealing in enhancing the effectiveness of light‐driven water splitting.

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Section: Figurementioning

confidence: 99%

Spectacular Oxygen Evolution Reaction Enhancement through Laser Processing of the Nickel‐Decorated Titania Nanotubes

Wawrzyniak

Karczewski

Coy

et al. 2020

Adv Materials Inter

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“…Renewable energy sources are considered to be the best choice in order to overcome these problems 3,4 . Green hydrogen, for example, which is the hydrogen produced using different renewable energy sources, is considered as being the cleanest fuel that can be utilized in various different sectors, with no environmental impacts 5‐7 . Developing cost‐effective devices that can use hydrogen fuel efficiently is a basic requirement for the success of this target.…”

Section: Introductionmentioning

confidence: 99%

Co‐decorated reduced graphene/titanium nitride composite as an active oxygen reduction reaction catalyst with superior stability

Al‐Dhaifallah¹,

Abdelkareem

Rezk

et al. 2020

Int J Energy Res

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Summary Preparing a cost‐effective, active, stable, non‐precious catalyst, especially at the cathode, is one of the basic requirements for the commercialization of fuel cells (FCs). In this study, cobalt nanoparticles composite with titanium nitride (TiN) were prepared on the surface of reduced graphene oxide, using a facile hydrothermal method, followed by heat treatment under an inert atmosphere. The surface morphology, surface composition, and crystalline structure are investigated with the use of field emission‐scanning electron microscopy, X‐ray photoelectron spectroscopy, and X‐ray diffraction, respectively. The oxygen reduction reaction (ORR) activity is examined in sulfuric acid (0.5 M H2SO4), under nitrogen and oxygen bubbling. Results showed that there is an optimum ratio of the Co and the TiN that maximizes the ORR activity. A high onset potential of 0.926 V vs Ag/AgCl is obtained in the case of CoTiN (30)/Gr. This is much higher than that of commercial Pt/C catalyst (0.576 V vs Ag/AgCl). The prepared catalyst has no activity towards methanol oxidation, unlike the Pt/C catalyst. Thus, it considered a promising cathode catalyst for direct alcoholic FCs. Furthermore, the composite catalyst has a high stability, with no activity degradation occurring even after 1000 cycles. This is extremely effective compared to the 20% loss of Pt/C activity under the same operating conditions. The high performance of the prepared catalyst is related to the synergetic effect between the TiN and the Cobalt.

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“…Hydrolysis of metals (eg, Al‐based and Mg‐based materials) with water has been reported as one of the approaches to produce real‐time hydrogen 3‐9 . Nonetheless, the reaction between metal and water is often hindered by the presence of an oxide film.…”

Section: Introductionmentioning

confidence: 99%

“…Hydrolysis of metals (eg, Al-based and Mg-based materials) with water has been reported as one of the approaches to produce real-time hydrogen. [3][4][5][6][7][8][9] Nonetheless, the reaction between metal and water is often hindered by the presence of an oxide film. Despite the low activity of Mg with water at ambient temperature, the oxide film on the Mg surface is easier to remove than the oxide film on Al.…”

Section: Introductionmentioning

confidence: 99%

Generation of hydrogen upon immersion of Mg in Mn(Ac) ₂ and the reaction mechanism

Wang

Chai

2020

Int J Energy Res

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Summary Reactions between metals and H2O could provide high‐purity hydrogen gas for portable fuel cell. However, the initial reaction is typically hindered due to the existence of a dense outer oxide film. Herein, rapid generation of hydrogen following immersion of Mg in a solution of Mn(Ac)2 is examined. The formation of an Mg/Mn galvanic cell results in the destruction of an oxide film, inducing a continuous reaction between Mg, Mn, and water. Moreover, Mn is then oxidized back to Mn2+, illustrating that the metal further participates in the generation of hydrogen. The detected reaction rate varies from 37.5 to 55 mL g−1 minute−1, and the hydrogen volume is ~1000 mL at 35°C. Furthermore, the in‐situ potential changes with the generation of hydrogen, reflecting the fluctuation of the Mg2+ and OH− ions. Notably, the formation of flake‐type Mn or Mn(OH)2 facilitates the permeation of water, OH− ions, and the overflow of hydrogen. Conversely, the accumulation of square‐type Mg(OH)2 hinders permeation, lowering the hydrogen generation rate. The results of the present study provide new insights into the design of highly pure hydrogen generation systems by adjusting the solution composition.

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Hydrogen production technologies: Attractiveness and future perspective

Cited by 71 publications

References 58 publications

Spectacular Oxygen Evolution Reaction Enhancement through Laser Processing of the Nickel‐Decorated Titania Nanotubes

Spectacular Oxygen Evolution Reaction Enhancement through Laser Processing of the Nickel‐Decorated Titania Nanotubes

Co‐decorated reduced graphene/titanium nitride composite as an active oxygen reduction reaction catalyst with superior stability

Generation of hydrogen upon immersion of Mg in Mn(Ac) ₂ and the reaction mechanism

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Hydrogen production technologies: Attractiveness and future perspective

Cited by 71 publications

References 58 publications

Spectacular Oxygen Evolution Reaction Enhancement through Laser Processing of the Nickel‐Decorated Titania Nanotubes

Spectacular Oxygen Evolution Reaction Enhancement through Laser Processing of the Nickel‐Decorated Titania Nanotubes

Co‐decorated reduced graphene/titanium nitride composite as an active oxygen reduction reaction catalyst with superior stability

Generation of hydrogen upon immersion of Mg in Mn(Ac) 2 and the reaction mechanism

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Generation of hydrogen upon immersion of Mg in Mn(Ac) ₂ and the reaction mechanism