Enhanced rate of hydrogen production by corrosion of commercial aluminum

Katsoufis, Petros; Doukas, Elias; Politis, Constantinus; Avgouropoulos, George; Lianos, Panagiotis

doi:10.1016/j.ijhydene.2020.01.215

Cited by 24 publications

(14 citation statements)

References 41 publications

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“…with water in the recent years. [19][20][21][22][23][24][25] Especially, aluminum is being considered to be a very promising hydrogen storage material due to the following advantages: (a) aluminum metal, which is abundant in nature and has low cost, has high energy density. (b) the byproduct of aluminum hydrolysis is the basic raw material for the electrolytic aluminum industry; (c) recycling of the metallic aluminum can take place via the Hall-Heroult process; (d) hydrogen production via reaction between aluminum and water is very convenient for the transportation and storage of hydrogen to meet the real-time hydrogen supply at certain places.…”

Section: Introductionmentioning

confidence: 99%

“…Ability to solve the problem of hydrogen storage and transportation has led to increasing attention being paid to the in‐situ hydrogen generation via the reaction of metals (Al, Mg, Li, etc.) with water in the recent years 19‐25 . Especially, aluminum is being considered to be a very promising hydrogen storage material due to the following advantages: (a) aluminum metal, which is abundant in nature and has low cost, has high energy density.…”

Section: Introductionmentioning

confidence: 99%

“…Especially, aluminum is being considered to be a very promising hydrogen storage material due to the following advantages: (a) aluminum metal, which is abundant in nature and has low cost, has high energy density. (b) the byproduct of aluminum hydrolysis is the basic raw material for the electrolytic aluminum industry; (c) recycling of the metallic aluminum can take place via the Hall‐Heroult process; (d) hydrogen production via reaction between aluminum and water is very convenient for the transportation and storage of hydrogen to meet the real‐time hydrogen supply at certain places 24,26‐28 . However, a thin and dense film is formed on the surface of aluminum due to its easy oxidation and it is critical to destroy the alumina film to achieve hydrogen production via the reaction between aluminum and water.…”

Section: Introductionmentioning

confidence: 99%

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Investigation on the Al/low‐melting‐point metals/salt composites for hydrogen generation

et al. 2021

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A series of Al-Ga-In-Sn-NaCl composites were prepared by mechanical ball milling. NaCl contributes to the particle breakage and particle refinement during the ball milling process, but the hydrogen generation of the composites decreases as the content of NaCl exceeds 5%. Higher composite to water ratio led to reduction of the hydrogen generation for the Al-Ga-In-Sn-5% NaCl composite. In addition, compared to pure water, the hydrogen generation of this composite is lower in NaCl solution. These results indicate the higher ionic concentration in water is not conducive for hydrogen generation. During the hydrolysis process, the dissolution of NaCl in water increases the ionic concentration, so the excessive NaCl in the composite leads to the reduction of hydrogen generation. In addition, optimization of the milling time is important for hydrogen generation. By optimizing the milling time to 18 hours, hydrogen yield of the Al-Ga-In-Sn-5% NaCl composite reached 1150 mL g −1 at 25 C. Although the composites easily react with moisture in the air, the hydrogen yield of Al-Ga-In-Sn-5% NaCl and Al-Ga-In-Sn-10% NaCl composites can maintain 100% and 94% of the original after being exposed to the air for 5 and 10 days. Highlights 1. A series of Al-Ga-In-Sn-NaCl composites were prepared by mechanical ball milling. 2. NaCl contributes to the particle breakage and particle refinement during the ball milling process, but the hydrogen generation of the composites decreases as the content of NaCl exceeds 5%.3. By optimizing the milling time to 18 hours, hydrogen yield of the Al-Ga-In-Sn-5% NaCl composite reached 1150 mL g −1 at 25 C in pure water. 4. The hydrogen yield of Al-Ga-In-Sn-5% NaCl and Al-Ga-In-Sn-10% NaCl composites can maintain 100% and 94% of the original after being exposed to the air for 5 and 10 days.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Investigation on the Al/low‐melting‐point metals/salt composites for hydrogen generation

et al. 2021

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“…Recently, hydrogen production from aluminum‐water reaction has attracted widespread attention due to its ability to solve the hydrogen storage and transportation problems 10‐14 . Aluminum is abundant in the earth's crust and has a high energy storage capacity 15‐17 .…”

Section: Introductionmentioning

confidence: 99%

“…Recently, hydrogen production from aluminum-water reaction has attracted widespread attention due to its ability to solve the hydrogen storage and transportation problems. [10][11][12][13][14] Aluminum is abundant in the earth's crust and has a high energy storage capacity. [15][16][17] Theoretically, 1 g of aluminum reacts with water can produce 1360 mL of hydrogen under the condition of 1 atm and 25 C, which is higher than the hydrogen production of the same amount of Mg, Zn, and Fe.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of the Al‐Ga‐In‐Sn‐KCl composites for hydrogen generation

et al. 2021

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The production of hydrogen through the aluminum‐water reaction has received increasing attention in recent years. In this study, a series of Al‐Ga‐In‐Sn‐KCl composites were prepared by mechanical ball milling for hydrogen generation. The effects of composite composition and preparation process on hydrogen generation are studied. It is determined that the optimal ball milling time for the Al‐6Ga‐2In‐1Sn‐1KCl, Al‐5Ga‐2In‐1Sn‐2KCl, and Al‐4Ga‐2In‐1Sn‐3KCl composites to reach their maximum hydrogen yield is 4, 7, and 9 hours, respectively. In particular, the 7 hours milled Al‐5Ga‐2In‐1Sn‐2KCl composite exhibits the best hydrogen generation properties among all composites, achieving a hydrogen yield of 1127 mL g−1 in pure water at 25°C. The microstructure characterization results show that the intermetallic compound In3Sn is formed in these three composites, and the three composites exhibit different morphologies due to their different compositions and different milling times. The effect of initial water temperature is also studied, and the best milled Al‐6Ga‐2In‐1Sn‐1KCl and Al‐5Ga‐2In‐1Sn‐2KCl composites are completely hydrolyzed as the water temperature rises to 60°C. Due to their good hydrogen production capacity, these composites are expected to become an energy source for real‐time hydrogen supply.

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Synthesis of Cobalt Oxide (Co₃O₄) Nanoparticles for Efficient Photocatalytic Water Splitting and Hydrogen Production

Hasan,

Alharthi

2023

ChemistrySelect

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In the recent years, photocatalytic hydrogen production using nanomaterials‐based photocatalysts have gained extensive attention. Various metal oxides have been widely explored in the photocatalytic hydrogen generation. It is interesting to prepare the efficient photocatalysts for photocatalytic hydrogen generation reactions. In present work, we used simple synthetic procedure for the preparation of cobalt oxide nanoparticles (Co3O4 NPs). The Co3O4 NPs were prepared using precipitation method. The surface structural features such as topological surface morphology was checked by scanning electron microscope. Presence of Co and O elements were authenticated by energy dispersive X‐ray spectroscopy. The phase purity or formation of Co3O4 NPs was evaluated by powder X‐ray diffraction approach. The optical band gap of the obtained Co3O4 NPs was determined by using ultraviolet‐visible spectroscopy. Furthermore, we have explored the synthesized Co3O4 NPs as photocatalyst for photocatalytic hydrogen production reaction. The obtained results exhibited good photocatalytic behavior of Co3O4 NPs was towards hydrogen production. The hydrogen amount of 4565 μmol.g−1 was produced using Co3O4 NPs as photocatalyst. The reusability of the Co3O4 NPs photocatalyst was also checked and obtained results showed that Co3O4 NPs is stable for reusability.

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Enhanced rate of hydrogen production by corrosion of commercial aluminum

Cited by 24 publications

References 41 publications

Investigation on the Al/low‐melting‐point metals/salt composites for hydrogen generation

Investigation on the Al/low‐melting‐point metals/salt composites for hydrogen generation

Preparation and characterization of the Al‐Ga‐In‐Sn‐KCl composites for hydrogen generation

Synthesis of Cobalt Oxide (Co₃O₄) Nanoparticles for Efficient Photocatalytic Water Splitting and Hydrogen Production

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Enhanced rate of hydrogen production by corrosion of commercial aluminum

Cited by 24 publications

References 41 publications

Investigation on the Al/low‐melting‐point metals/salt composites for hydrogen generation

Investigation on the Al/low‐melting‐point metals/salt composites for hydrogen generation

Preparation and characterization of the Al‐Ga‐In‐Sn‐KCl composites for hydrogen generation

Synthesis of Cobalt Oxide (Co3O4) Nanoparticles for Efficient Photocatalytic Water Splitting and Hydrogen Production

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Product

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Synthesis of Cobalt Oxide (Co₃O₄) Nanoparticles for Efficient Photocatalytic Water Splitting and Hydrogen Production