Au@Ir core-shell nanowires towards oxygen reduction reaction

Xue, Qi; Sun, Hui‐Ying; Li, Yanan; Zhong, Mingjun; Li, Fu-Min; Tian, Xinlong; Chen, Pei; Yin, Shibin; Chen, Yu

doi:10.1016/j.cej.2021.129760

Cited by 36 publications

(12 citation statements)

References 55 publications

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“…47 Forming a heterostructure, as a type of interfacial structure, is a favorable strategy to enhance the catalytic performance of materials, which not only overcomes the inherent disadvantages of each material but also generates new properties due to interfacial effects. [48][49][50][51][52] In particular, heterogeneous nanointerfaces with a built-in electric eld have demonstrated outstanding electrocatalytic activities because they can boost the interfacial charge transfer during electrocatalytic processes and effectively inuence the adsorption of the corresponding reactants and intermediates. [53][54][55] Therefore, the construction of Cu-based materials/MnO 2 heterostructures with well-designed built-in electric elds is advantageous for enhancing the activity of electrochemical nitrate reduction to ammonia.…”

Section: Introductionmentioning

confidence: 99%

Interface coupling induced built-in electric fields boost electrochemical nitrate reduction to ammonia over CuO@MnO₂ core–shell hierarchical nanoarrays

Sheng

Wang

et al. 2022

J. Mater. Chem. A

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Section: Introductionmentioning

confidence: 99%

Interface coupling induced built-in electric fields boost electrochemical nitrate reduction to ammonia over CuO@MnO₂ core–shell hierarchical nanoarrays

Sheng

Wang

et al. 2022

J. Mater. Chem. A

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“…The activity of Pd 3 Pb@Pd nanosheets with a uniform Pd shell decreased and the composition almost remained the same after 20,000 cycles. An one-pot chemical reduction strategy was developed for the rapid synthesis of high quality Au@Ir nanowires in 1-naphthol ethanol solution [ 70 ]. HAuCl 4 and IrCl 3 ·H 2 O were added into the mixed solution of water and ethanol.…”

Section: Factors Affecting the Orr Performances Of The Core-shell Str...mentioning

confidence: 99%

“…LSV curves (5 mV·s −1 , 1600 rpm) of ( h ) Au@Ir NPs and ( i ) Pt NPs in O 2 -saturated 0.1 M KOH solution before and after the multiple cycles. Reproduced with permission from [ 70 ]. Copyright © 2022, Elsevier.…”

Section: Figurementioning

confidence: 99%

Noble Metal-Based Catalysts with Core-Shell Structure for Oxygen Reduction Reaction: Progress and Prospective

Wang

Qin

et al. 2022

Nanomaterials

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With the deterioration of the ecological environment and the depletion of fossil energy, fuel cells, representing a new generation of clean energy, have received widespread attention. This review summarized recent progress in noble metal-based core–shell catalysts for oxygen reduction reactions (ORRs) in proton exchange membrane fuel cells (PEMFCs). The novel testing methods, performance evaluation parameters and research methods of ORR were briefly introduced. The effects of the preparation method, temperature, kinds of doping elements and the number of shell layers on the ORR performances of noble metal-based core–shell catalysts were highlighted. The difficulties of mass production and the high cost of noble metal-based core–shell nanostructured ORR catalysts were also summarized. Thus, in order to promote the commercialization of noble metal-based core–shell catalysts, research directions and prospects on the further development of high performance ORR catalysts with simple synthesis and low cost are presented.

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“…However, during heat treatment, MOFs lose their remarkable pore structure, destroying the advantages that come with the well-defined pores and high specific surface areas . The electrocatalytic reaction is generally understood to be a multistep complex process that involves the adsorption/desorption of reactants and the mass and electron transfer across the electrode, which is governed primarily by its surface electronic structure. − The noble metal modification method is highly effective in optimizing the electron configuration and increasing the atomic utilization efficiency. − These also increase the intrinsic catalytic activity through charge distribution and electronic coupling, which helps in modifying the surface property of the catalysts and optimizing the adsorption energy of some key intermediates. , Among different noble metals, Ru is cost effective and has an extra edge for water splitting because of its appropriate binding energy with intermediate, superior thermal stability and strong resistance for a corrosive electrolyte. − …”

Section: Introductionmentioning

confidence: 99%

MOF-Derived Porous Fe₃O₄/RuO₂-C Composite for Efficient Alkaline Overall Water Splitting

Shekhawat

Samanta

Barman

2022

ACS Appl. Energy Mater.

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Development of highly active, durable, bifunctional electrocatalysts for overall water splitting is of great importance to enhance the use of hydrogen energy. Herein, we synthesize a porous and interfaces-rich Fe3O4/RuO2-C composite from the Metal organic frameworks (MOF) material for overall water splitting in alkaline media. The Fe3O4/RuO2-C catalyst showed superior oxygen evolution reaction (OER) with high faradic efficacy. It requires 268 mV overpotential to achieve the current density of 20 mA/cm2. The catalyst also exhibited good hydrogen evolution reaction (HER) with a current density of 10 mA/cm2 at an overpotential of 94 mV. The stability test confirmed a remarkable long-term OER and HER stability of this catalyst in alkaline media. In addition, the Fe3O4/RuO2-C catalyst was also used as cathode and anode material for overall water splitting. It showed superior activity and stability in alkaline media with 10 mA/cm2 current density at 1.595 V cell potential. The excellent electrocatalytic activity of the Fe3O4/RuO2-C catalyst can be attributed to its porous structure, synergistic interaction between the components, the presence of hetero-interfaces, high electrochemical surface area etc. This work may provide an opportunity to design a bifunctional electrocatalyst for the development of anion exchange membrane water electrolyzers (AEMWEs).

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Au@Ir core-shell nanowires towards oxygen reduction reaction

Cited by 36 publications

References 55 publications

Interface coupling induced built-in electric fields boost electrochemical nitrate reduction to ammonia over CuO@MnO₂ core–shell hierarchical nanoarrays

Interface coupling induced built-in electric fields boost electrochemical nitrate reduction to ammonia over CuO@MnO₂ core–shell hierarchical nanoarrays

Noble Metal-Based Catalysts with Core-Shell Structure for Oxygen Reduction Reaction: Progress and Prospective

MOF-Derived Porous Fe₃O₄/RuO₂-C Composite for Efficient Alkaline Overall Water Splitting

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Au@Ir core-shell nanowires towards oxygen reduction reaction

Cited by 36 publications

References 55 publications

Interface coupling induced built-in electric fields boost electrochemical nitrate reduction to ammonia over CuO@MnO2 core–shell hierarchical nanoarrays

Interface coupling induced built-in electric fields boost electrochemical nitrate reduction to ammonia over CuO@MnO2 core–shell hierarchical nanoarrays

Noble Metal-Based Catalysts with Core-Shell Structure for Oxygen Reduction Reaction: Progress and Prospective

MOF-Derived Porous Fe3O4/RuO2-C Composite for Efficient Alkaline Overall Water Splitting

Contact Info

Product

Resources

About

Interface coupling induced built-in electric fields boost electrochemical nitrate reduction to ammonia over CuO@MnO₂ core–shell hierarchical nanoarrays

Interface coupling induced built-in electric fields boost electrochemical nitrate reduction to ammonia over CuO@MnO₂ core–shell hierarchical nanoarrays

MOF-Derived Porous Fe₃O₄/RuO₂-C Composite for Efficient Alkaline Overall Water Splitting