Efficient photocatalytic hydrogen evolution over carbon supported antiperovskite cobalt zinc nitride

Liu, Siqi; Meng, Xiangjian; Adimi, Samira; Guo, Haichuan; Qi, Weiliang; Attfield, J. Paul

doi:10.1016/j.cej.2020.127307

Cited by 22 publications

(29 citation statements)

References 48 publications

(41 reference statements)

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“…[172] As result, with the support of carbon black, Co 3 ZnN/C achieves the highest H 2 evolution rate of 15.4 mmol g -1 h -1 , which is over six times higher than that of monometallic Co 4 N (Figure 9d). [171] This experimental result gives an ample demonstration of the concurrence with the theoretical calculation and provides a new guideline for optimizing TMN.…”

Section: (13 Of 22)supporting

confidence: 60%

Section: Application Of Tmns In Photocatalysismentioning

confidence: 99%

“…[ 171 ] DFT calculations reveal that the electronic structure of Co 3 ZnN can be tuned by introducing zinc atoms (Figure 9c). [ 171 ] It is clear from these plots that the calculated d‐band center of Co 4 N and Co 3 ZnN are −1.78 and −1.87 eV relative to the Fermi level, respectively. Therefore, the lower antibonding energy states of Co 3 ZnN are lowered further, and the d‐band center of Co 3 ZnN becomes more negative, thus moving farther away from the Fermi level.…”

Section: Application Of Tmns In Photocatalysismentioning

confidence: 99%

“…Therefore, the lower antibonding energy states of Co 3 ZnN are lowered further, and the d‐band center of Co 3 ZnN becomes more negative, thus moving farther away from the Fermi level. [ 171 ] These electronic changes might lead to a weakened interaction between the material surface and hydrogen. Meanwhile, this favors the desorption of hydrogen from the catalyst surface, thus benefitting hydrogen desorption.…”

Section: Application Of Tmns In Photocatalysismentioning

confidence: 99%

“…[170] Compared to binary Co-based nitride, anti-perovskite phase Co 3 ZnN that is formed by zinc atoms replacing the cobalt atoms at the apex of the cubic unit cell has improved electronic properties (Figure 9b). [171] DFT calculations reveal that the electronic structure of Co 3 ZnN can be tuned by introducing zinc atoms (Figure 9c). [171] It is clear from these plots that the calculated d-band center of Co 4 N and Co 3 ZnN are −1.78 and −1.87 eV relative to the Fermi level, respectively.…”

Section: (13 Of 22)mentioning

confidence: 99%

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Recent Advances in Transition Metal Nitride‐Based Materials for Photocatalytic Applications

Cheng

Pang

et al. 2021

Adv Funct Materials

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Photocatalysis is a promising and convenient strategy to convert solar energy into chemical energy for various fields. However, photocatalysis still suffers from low solar energy conversion efficiency. Developing state of the art photocatalysts with high efficiency and low cost is a huge challenge. Transition metal nitrides (TMNs) as a class of metallic interstitial compounds have attracted significant attention in photocatalytic applications. In fact, TMNs exhibit multifunctional properties in various photocatalytic systems. This review is the first attempt that summarizes recent research on TMNs‐based materials in various photocatalytic applications. Different roles of TMNs materials in photocatalytic systems including semiconductor active components, co‐catalysts, inter‐band excitation, and surface plasmon resonance components are systematically discussed and summarized. The fundamentals, latest progress, and emerging opportunities for further improving the performances of TMNs‐based materials for photocatalysis are also discussed. Finally, some challenges facing TMNs, and perspectives on their future that are relevant for furthering research in the area of photocatalysis are also proposed.

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Section: (13 Of 22)supporting

confidence: 60%

Section: Application Of Tmns In Photocatalysismentioning

confidence: 99%

Section: Application Of Tmns In Photocatalysismentioning

confidence: 99%

Section: Application Of Tmns In Photocatalysismentioning

confidence: 99%

Section: (13 Of 22)mentioning

confidence: 99%

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Recent Advances in Transition Metal Nitride‐Based Materials for Photocatalytic Applications

Cheng

Pang

et al. 2021

Adv Funct Materials

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Zn Dopants Synergistic Oxygen Vacancy Boosts Ultrathin CoO Layer for CO₂ Photoreduction

Chen

Jiang

Liu

et al. 2021

Adv Funct Materials

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Photoreduction of CO 2 without photosensitizers and scavengers runs into the development bottleneck for lack of excellent photocatalysts and ambiguous reduction mechanism. Herein, an ultrathin CoO layer containing Zn-dopants and O-vacancies (V o -Zn-CoO) is designed as an archetype to explore the influence mechanism of Zn on O-vacancies in ultrathin nanolayer for CO 2 photoreduction. DFT calculations illustrate that Zn-dopants not only reduce formation barriers of *COOH and *CO intermediates, but also form π-backbonding with *CO stimulating CH 4 evolution. Finally, V o -Zn-CoO layer significantly enhances CO 2 photoreduction efficiency and CH 4 selectivity with 26.8 µmol g −1 h −1 (63.8%) compared to 7.2 µmol g −1 h −1 (23.6%) for CoO layer with O-vacancies. Moreover, the synergistic effect of Zn and O-vacancies benefits the stability of O-vacancies in photocatalysts, achieving durable photocatalytic performance of V o -Zn-CoO layer. This work manifests that the strategy of metal atoms synergistic O-vacancies is effective to optimize CO 2 photocatalytic efficiency, selectivity, and stability of photocatalyst with O-vacancies.

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Surface Reconstruction on Metal Nitride during Photo‐oxidation

Liu,

Qi,

Yang

et al. 2024

Angewandte Chemie

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The efficient conversion and storage of solar energy for chemical fuel production presents a challenge in sustainable energy technologies. Metal nitrides (MNs) possess unique structures that make them multi‐functional catalysts for water splitting. However, the thermodynamic instability of MNs often results in the formation of surface oxide layers and ambiguous reaction mechanisms. Herein, we present on the photo‐induced reconstruction of a Mo‐rich@Co‐rich bi‐layer on ternary cobalt‐molybdenum nitride (Co3Mo3N) surfaces, resulting in improved effectiveness for solar water splitting. During a photo‐oxidation process, the uniform initial surface oxide layer is reconstructed into an amorphous Co‐rich oxide surface layer and a subsurface Mo‐N layer. The Co‐rich outer layer provides active sites for photocatalytic oxygen evolution reaction (POER), while the Mo‐rich sublayer promotes charge transfer and enhances the oxidation resistance of Co3Mo3N. Additionally, the surface reconstruction yields a shortened Co‐Mo bond length, weakening the adsorption of hydrogen and resulting in improved performance for both photocatalytic hydrogen evolution reaction (PHER) and POER. This work provides insight into the surface structure‐to‐activity relationships of MNs in solar energy conversion, and is expected to have significant implications for the design of metal nitride‐based catalysts in sustainable energy technologies.

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Efficient photocatalytic hydrogen evolution over carbon supported antiperovskite cobalt zinc nitride

Cited by 22 publications

References 48 publications

Recent Advances in Transition Metal Nitride‐Based Materials for Photocatalytic Applications

Recent Advances in Transition Metal Nitride‐Based Materials for Photocatalytic Applications

Zn Dopants Synergistic Oxygen Vacancy Boosts Ultrathin CoO Layer for CO₂ Photoreduction

Surface Reconstruction on Metal Nitride during Photo‐oxidation

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Efficient photocatalytic hydrogen evolution over carbon supported antiperovskite cobalt zinc nitride

Cited by 22 publications

References 48 publications

Recent Advances in Transition Metal Nitride‐Based Materials for Photocatalytic Applications

Recent Advances in Transition Metal Nitride‐Based Materials for Photocatalytic Applications

Zn Dopants Synergistic Oxygen Vacancy Boosts Ultrathin CoO Layer for CO2 Photoreduction

Surface Reconstruction on Metal Nitride during Photo‐oxidation

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Product

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Zn Dopants Synergistic Oxygen Vacancy Boosts Ultrathin CoO Layer for CO₂ Photoreduction