Carbon nitride supported Ni<sub>0.5</sub>Co<sub>0.5</sub>O nanoparticles with strong interfacial interaction to enhance the hydrolysis of ammonia borane

Shang, Yunpeng; Feng, Kun; Wang, Yu; Sun, Xuhui; Zhong, Jun

doi:10.1039/c9ra01743g

Cited by 13 publications

(11 citation statements)

References 41 publications

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“…Catalysts in various forms have been investigated. Metal organic framework-supported metal nanoparticles [97][98][99], silica-supported bi-/ter-nary composites [100][101][102][103], graphene-containing catalytic materials [104][105][106][107], nitride as active phase supports [108][109][110], cobalt-based alloys and catalysts [111][112][113][114][115], nickel-based systems [116][117][118], supported ruthenium nanostructures [119][120][121][122] and palladium-based materials [123][124][125][126] are examples among the catalysts reported within the last three years. Such efforts have allowed the development of many active heterogeneous catalysts like the rhodium nanoparticles supported over cobalt (II, III) oxide, which attained a turnover frequency of 1800 min −1 and a total of 1.02 × 10 6 turnovers for hydrogen release at 25 • C [127].…”

Section: In Watermentioning

confidence: 99%

Ammonia Borane: An Extensively Studied, Though Not Yet Implemented, Hydrogen Carrier

Demirci

2020

Energies

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Ammonia borane H3N−BH3 (AB) was re-discovered, in the 2000s, to play an important role in the developing hydrogen economy, but it has seemingly failed; at best it has lagged behind. The present review aims at analyzing, in the context of more than 300 articles, the reasons why AB gives a sense that it has failed as an anodic fuel, a liquid-state hydrogen carrier and a solid hydrogen carrier. The key issues AB faces and the key challenges ahead it has to address (i.e., those hindering its technological deployment) have been identified and itemized. The reality is that preventable errors have been made. First, some critical issues have been underestimated and thereby understudied, whereas others have been disproportionally considered. Second, the potential of AB has been overestimated, and there has been an undoubted lack of realistic and practical vision of it. Third, the competition in the field is severe, with more promising and cheaper hydrides in front of AB. Fourth, AB has been confined to lab benches, and consequently its technological readiness level has remained low. This is discussed in detail herein.

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Section: In Watermentioning

confidence: 99%

Ammonia Borane: An Extensively Studied, Though Not Yet Implemented, Hydrogen Carrier

Demirci

2020

Energies

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“…All the above-mentioned findings are also observed in the FTIR spectrum of mpg-CN/Pt nanocatalysts with minor differences. In the FTIR spectrum of each nanocatalyst, the peaks at 1235 and 1313 cm −1 apparently shifted to the higher frequencies, indicating that C−N groups of s-triazine units are in contact with Pt NPs for their stabilization 46 (Figure 5b). These results are consistent with the conclusion reached by the XPS analysis.…”

Section: Resultsmentioning

confidence: 99%

Pt Nanoparticles Supported on Mesoporous Graphitic Carbon Nitride as Catalysts for Hydrolytic Dehydrogenation of Ammonia Borane

Aksoy

Metin

2020

ACS Appl. Nano Mater.

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Platinum (Pt) nanoparticles (NPs) supported on mesoporous graphitic carbon nitride (mpg-CN/Pt) were synthesized in situ via the reduction of as-prepared mpg-CN/Pt(IV) composites during the catalytic hydrolysis of ammonia-borane (AB) under the white-light irradiation. The yielded mpg-CN/Pt nanocatalysts were characterized by using many advanced analytical techniques including TEM, XRD, ICP-MS, XPS, FTIR, PL, and time-resolved emission spectroscopy (TRES) techniques. Besides the privilege advantageous of the presented in situ synthesis protocol for the synthesis of mpg-CN/Pt nanocatalysts, formation of the heterojunction between in situ generated Pt NPs and visible-light active semiconductor mpg-CN enables an improved charge separation and prolonged lifetime, resulting in 2.25-fold enhanced photocatalytic activity within the hydrolysis of AB under white-light irradiation. The effect of Pt loading on the catalytic activity of mpg-CN/Pt nanocatalysts was examined in the hydrolysis of AB and the highest turnover frequency (TOF) of 274.2 min −1 was obtained with 5.94 wt % Pt-loaded mpg-CN/Pt nanocatalysts, which is the one of the best TOFs among monometallic Pt-based nanocatalysts and comparable to the ones reported using bimetallic Pt nanocatalysts. Moreover, mpg-CN/Pt nanocatalysts were found to be highly durable in the hydrolysis of AB such that it preserves 78% of its initial catalytic activity after the 10th consecutive runs, which is one of the highest reusability performances among all Pt-based catalysts that have been tested in the hydrolysis of AB so far. Upon the results of the kinetic studies, the rate law and activation parameters for the mpg-CN/Ptcatalyzed AB hydrolysis were also reported. This work demonstrates for the first time that mpg-CN is a proper support material for the in situ synthesis of catalytically active yet stable Pt NPs promoting the photocatalytic hydrogen evolution from the hydrolysis of AB.

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“…On the other hand, low‐valance transition metals such as Ti 2+ can transfer an electron to the dissociated hydrogen atom to H − ions and facilitate the formation of binary hydrides such as alanates and borohydrides. [ 24 ] Experimentally, multivalence Ti was shown to facilitate the electron transfers between Mg 2+ and H − to promote hydrogen sorption in Mg. 13 In the case of complex hydrides, catalysts such as Co have been claimed to facilitate the transfer of electrons between elemental B and H 2 molecules, leading to the formation of B + and H − , which when combined to produce B 2 H 6 can react rapidly with LiH to form LiBH 4 . [ 23 ]…”

Section: Catalysis In Solid‐state Hydrogen Stores: General Mechanismsmentioning

confidence: 99%

“…This shows that Cu is effective for the catalytic hydrolysis of AB. A similar strategy was also adopted for the carbon nitride‐supported Ni 0.5 Co 0.5 O nanoparticles for the hydrolysis of AB [24a] …”

Section: Catalyzed Hydrolysis Of Hydrides: Means To Generate Hydrogenmentioning

confidence: 99%

“…Zhao et al also reported on N‐doped GO‐supported Ni–Pt bimetallic catalyst for the hydrolysis of AB. The oxidized catalyst exhibited an initial TOF value of ≈710 mol H2 mol cat −1 min −1 [24b] . X‐Ray absorption spectroscopy (XAS) investigations revealed that Pt and Ni exhibit a strong interaction through oxygen bonds with the GO support.…”

Section: Catalyzed Hydrolysis Of Hydrides: Means To Generate Hydrogenmentioning

confidence: 99%

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Catalysis in Solid Hydrogen Storage: Recent Advances, Challenges, and Perspectives

et al. 2022

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Catalysis is at the core of previous energy transition. It has enabled the use of oil and natural gas as our primary energy sources in unprecedented ways and led to feedstocks enabling exceptionally high living standards in human history. In a decarbonized economy with hydrogen as the new energy vector, catalysis is already playing a key role in producing hydrogen. However, catalysts for the effective storage of hydrogen must be advanced. Many solid hydrogen storage materials such as magnesium‐based hydrides, alanates, and/or borohydrides display promising hydrogen densities far superior to the current state of compressed or liquid hydrogen. These solid materials have thermodynamic and kinetic barriers which severely hinder their practical hydrogen uptake and release. To date, most of these barriers for solid hydrides (especially boron or nitrogen compounds) are modified via catalysis; however, the catalytic species per se and their roles are obscure. Herein, a comprehensive overview of various catalysts for solid hydrogen storage materials, their catalytic roles, and the underpinning mechanisms is provided. The current state of knowledge is critically reviewed and gaps where further research intensification is needed to support rapid hydrogen generation and storage in solid materials for the emerging hydrogen economy are identified.

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Carbon nitride supported Ni_0.5Co_0.5O nanoparticles with strong interfacial interaction to enhance the hydrolysis of ammonia borane

Abstract: Ni0.5Co0.5O on carbon nitride shows a high TOF value for the hydrolysis of ammonia borane due to the interfacial interaction.

Cited by 13 publications

References 41 publications

Ammonia Borane: An Extensively Studied, Though Not Yet Implemented, Hydrogen Carrier

Ammonia Borane: An Extensively Studied, Though Not Yet Implemented, Hydrogen Carrier

Pt Nanoparticles Supported on Mesoporous Graphitic Carbon Nitride as Catalysts for Hydrolytic Dehydrogenation of Ammonia Borane

Catalysis in Solid Hydrogen Storage: Recent Advances, Challenges, and Perspectives

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Carbon nitride supported Ni0.5Co0.5O nanoparticles with strong interfacial interaction to enhance the hydrolysis of ammonia borane

Abstract: Ni0.5Co0.5O on carbon nitride shows a high TOF value for the hydrolysis of ammonia borane due to the interfacial interaction.

Cited by 13 publications

References 41 publications

Ammonia Borane: An Extensively Studied, Though Not Yet Implemented, Hydrogen Carrier

Ammonia Borane: An Extensively Studied, Though Not Yet Implemented, Hydrogen Carrier

Pt Nanoparticles Supported on Mesoporous Graphitic Carbon Nitride as Catalysts for Hydrolytic Dehydrogenation of Ammonia Borane

Catalysis in Solid Hydrogen Storage: Recent Advances, Challenges, and Perspectives

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Carbon nitride supported Ni_0.5Co_0.5O nanoparticles with strong interfacial interaction to enhance the hydrolysis of ammonia borane