A 3D porous P-doped Cu–Ni alloy for atomic H* enhanced electrocatalytic reduction of nitrate to ammonia

Ma, Zhichao; Wang, Chenyi; Yang, Tianfang; Wei, Gangya; Huang, Jinrui; Liu, Mengran; Zhang, Kun; Zhang, Zunjie; Liu, Yang; Gao, Shuyan

doi:10.1039/d3ta08086b

Cited by 3 publications

(1 citation statement)

References 62 publications

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“…21,22 In the study of conventional copper base binary and terpolymer alloys, they reduce the overpotential of the reaction and the speed of the intermediate and effectively regulate the initial adsorption energy and desorption energy of nitrate to ammonia. 23 However, the above alloys are limited by the limited space of alloy adjustable types, and the ammonia yield and Faraday efficiency (FE) are still not ideal. Conventional Cu-based binary alloys make it difficult to realize multimajor element synergistic catalytic and decoupling constraints on the adsorption energies of intermediate components, resulting in limited tunability of the active site components and poorly regulated adsorption/desorption energies.…”

Section: Introductionmentioning

confidence: 99%

Optimizing Nitrate Reduction to Ammonia via Modulating Adsorption–Desorption Dynamics with High-Entropy CuNiCoZnMn Alloy Catalysts

Zhang,

Yang

et al. 2024

ACS Appl. Mater. Interfaces

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NO3RR synthesis of ammonia is a complex eight-electron reaction involving multiple steps and intermediates, in which NO3 – adsorption and NH3 desorption are crucial. The Cu-based high entropy quinary alloy catalyst has good surface adsorption and desorption ability for the reduction of nitric acid to ammonia. Here, the catalytic sites were coordinated by constructing CuNiCoZnMn alloys to adjust the electronic structure of the catalytic sites to facilitate the reaction of the substrate and thus optimize the whole reaction path. Based on the ternary alloy CuNiCo, the introduction of the Zn element continues to reduce the desorption energy barrier, and the introduction of the Mn element continues to enhance the initial adsorption energy so that the target product can be quickly held and released to accelerate the production of ammonia. The NH3 yield and Faraday efficiency obtained for the quinary CuNiCoZnMn alloy catalyst reached 723.7 μmol h–1 cm–2 and 96.6%, respectively, at −0.35 V vs RHE potential. The density functional theory calculations showed that the quinary CuNiCoZnMn alloy (NO3 – to *NO3 –) initial adsorption-free energy change and (*NH3 to NH3) NH3 desorption-free energy change are −2.50, 0.072 eV, respectively, which are significantly better than those of the ternary CuNiC and quaternary CuNiCoZn of −2.02, 0.544 eV and −1.97, 0.217 eV.

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Section: Introductionmentioning

confidence: 99%

Optimizing Nitrate Reduction to Ammonia via Modulating Adsorption–Desorption Dynamics with High-Entropy CuNiCoZnMn Alloy Catalysts

Zhang,

Yang

et al. 2024

ACS Appl. Mater. Interfaces

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Enhanced electrocatalytic nitrate reduction and energy conversion through Zn-Nitrate battery by Cu3P@Co(OH)2/CF heterostructure catalyst

Yue,

Liping,

Yuechen

et al. 2024

International Journal of Hydrogen Energy

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Electrochemical nitrate reduction to ammonia using copper-based electrocatalysts

Zhang,

Cui

et al. 2024

Next Energy

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A 3D porous P-doped Cu–Ni alloy for atomic H* enhanced electrocatalytic reduction of nitrate to ammonia

Abstract: A 3D porous phosphorus (P)-doped Cu–Ni alloy are constructed through a one-step electrodeposition synthesis. The doped P promotes the hydrogenation process in the atomic H* path and effectively accelerates the NRA reaction rate.

Cited by 3 publications

References 62 publications

Optimizing Nitrate Reduction to Ammonia via Modulating Adsorption–Desorption Dynamics with High-Entropy CuNiCoZnMn Alloy Catalysts

Optimizing Nitrate Reduction to Ammonia via Modulating Adsorption–Desorption Dynamics with High-Entropy CuNiCoZnMn Alloy Catalysts

Enhanced electrocatalytic nitrate reduction and energy conversion through Zn-Nitrate battery by Cu3P@Co(OH)2/CF heterostructure catalyst

Electrochemical nitrate reduction to ammonia using copper-based electrocatalysts

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