Electrocatalytic Reduction of Nitrate/Nitrite to Ammonia on CuCo Nanoparticles Decorated N‐doped Carbon DOI

Chuanfei Cang,

Rong Hua,

Guoqing Shen

et al.

Advanced Sustainable Systems, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 2, 2024

Abstract Electrocatalytic nitrate (NO 3 − )/nitrite 2 ) reduction of ammonia (NH provides energy‐saving and sustainable methods for NH synthesis. However, both reactions involve multiple electrons protons, making the reaction process complex with many by‐products. Thus, efficient catalysts are needed to improve selectivity yield ammonia. Herein, CuCo nanoparticles decorated N‐doped carbon (CuCo‐NC) derived from zeolitic imidazolate framework (ZIF) a cross‐shaped leaf structure has been synthesized as electrocatalysts NO / reduction. The obtained CuCo‐NC possesses Cu‐doped Co metallic nanoparticles, hierarchical structure, demonstrated exhibit good activity in electrocatalytic /NO In , Faraday efficiency reached 97% 7.17 mg h −1 cm −2 at −0.3 V. 92% 8.34 V, demonstrating stability cyclic electrolysis reactions. exhibits excellent therefore highlights promising potential bimetallic

Language: Английский

Design and regulation of defective electrocatalysts DOI
Yiqiong Zhang, Jingjing Liu, Yangfan Xu

et al.

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

This review focuses on the synthesis and characterization of defective electrocatalysts, internal correlation between defects catalytic activity, development application electrocatalysts in various fields.

Language: Английский

Citations

29
Electrocatalytic Ammonia Oxidation to Nitrite and Nitrate with NiOOH‐Ni DOI Creative Commons
Hanwen Liu,

Cheng‐Jie Yang,

Chung‐Li Dong

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(42)

Published: Aug. 7, 2024

Abstract Ammonia electrooxidation in aqueous solutions can be a highly energy‐efficient process producing nitrate and nitrite while generating hydrogen under ambient conditions. However, the kinetics of this reaction are slow role catalyst facilitating ammonia is not well understood. In study, high‐performance NiOOH‐Ni introduced for converting into with Faraday efficiency up to 90.4% production rate 1 mg h −1 cm −2 . By employing Operando techniques, NiOOH elucidated dynamic ammonia. Density functional theory (DFT) calculations support experimental observations reveal mechanism electrochemical oxidation nitrate. Overall, research contributes development cost‐effective efficient large‐scale electrolysis, shedding light on underlying electrooxidation.

Language: Английский

Citations

13
Facet-Dependent Evolution of Active Components on Spinel Co3O4 for Electrochemical Ammonia Synthesis DOI
Anquan Zhu,

Heng Liu,

Shuyu Bu

et al.

ACS Nano, Journal Year: 2024, Volume and Issue: 18(33), P. 22344 - 22355

Published: Aug. 6, 2024

Spinel cobalt oxides (Co

Citations

9
Interfacial Engineering Boosting the Activity and Stability of MIL-53(Fe) toward Electrocatalytic Nitrogen Reduction DOI

Zhuangzhi Sun,

Jiawei Lin, Suwei Lu

et al.

Langmuir, Journal Year: 2024, Volume and Issue: 40(10), P. 5469 - 5478

Published: March 4, 2024

The electrochemical nitrogen reduction reaction (eNRR) has emerged as a promising strategy for green ammonia synthesis. However, it suffers unsatisfactory performance owing to the low aqueous solubility of N2 in solution, high dissociation energy N≡N, and unavoidable competing hydrogen evolution (HER). Herein, MIL-53(Fe)@TiO2 catalyst is designed synthesized highly efficient eNRR. Relative simple MIL-53(Fe), achieves 2-fold enhancement Faradaic efficiency (FE) with an improved yield rate by 76.5% at −0.1 V versus reversible electrode (RHE). After four cycles electrocatalysis, can maintain good catalytic activity, while MIL-53(Fe) exhibits significant decrease NH3 FE 79.8 82.3%, respectively. Benefiting from synergetic effect between TiO2 composites, Fe3+ ions be greatly stabilized during eNRR process, which hinders deactivation caused ions. Further, charge transfer ability interface composites improved, thus, activity significantly boosted. These findings provide insight into preparation composite electrocatalysts.

Language: Английский

Citations

8
Construction of S/Cl-NiCo LDH@NiCo2O4 Heterojunction for Enhanced Charge Storage and Decoupled Water Electrolysis DOI
Kang Sun, Lei Zhang, Shijing Zhang

et al.

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: unknown, P. 178419 - 178419

Published: Dec. 1, 2024

Language: Английский

Citations

6
Selective Electrosynthesis of Ammonia via Nitric Oxide Electroreduction Catalyzed by Copper Nanowires infused in Nitrogen-Doped Carbon Nanorods DOI
Dinesh Dhanabal, Yuyeon Song,

Seoyoung Jang

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 361, P. 124577 - 124577

Published: Sept. 6, 2024

Language: Английский

Citations

4
Ru‐Incorporation‐Induced Phase Transition in Co Nanoparticles for Low‐Concentration Nitric Oxide Electroreduction to Ammonia at Low Potential DOI Open Access
Dongdong Wang, Guilan Fan, Deyan Luan

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 6, 2024

Abstract Electrocatalytic reduction of nitric oxide (NO) to ammonia (NH 3 ) represents a potential solution for improving the disrupted nitrogen cycle balance. Unfortunately, designing efficient electrocatalysts NO reaction (NORR) remains notable challenge, especially at low concentrations. Herein, displacement‐alloying strategy is reported successfully induce phase transition Co nanoparticles supported on carbon nanosheets from face‐centered cubic (fcc) hexagonal close‐packed (hcp) structure through Ru incorporation. The obtained RuCo alloy with hcp (hcp‐RuCo) exhibits apparent NORR activity record‐high Faraday efficiency 99.2% and an NH yield 77.76 µg h −1 mg cat −0.1 V versus reversible hydrogen electrode concentration 1 vol %, surpassing fcc most catalysts. Density functional theory calculations reveal that excellent hcp‐RuCo can be attributed optimized electronic site lowered energy barrier rate‐determining step transition. Furthermore, assembled Zn‐NO battery using as cathode achieves power density 2.33 mW cm −2 45.94 . This work provides promising research perspective low‐concentration conversion.

Language: Английский

Citations

4
Screened Ni3 single-cluster catalyst supported on graphidyne for high-performance electrocatalytic NO reduction to NH3: A computational study DOI
Tingyu Yan,

Siyao Wang,

Simone Lang

et al.

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 683, P. 1067 - 1076

Published: Jan. 2, 2025

Language: Английский

Citations

0
Gelatin‐Induced Synthesis of Strain‐Engineered Spherical Cu2O Nanoparticles for Efficient Nitrate Reduction to Ammonia DOI Open Access
Ji Li,

Kai Wu,

Jing Heng

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 29, 2025

The electrochemical reduction of nitrate to ammonia offers an environmentally sustainable pathway for nitrogen fixation. However, achieving both efficiency and selectivity in presents a formidable challenge, due the involvement sluggish multielectron transfer processes. Herein, successful synthesis spherical Cu₂O nanoparticles (s-Cu₂O) exhibiting significant compressive strain effects, achieved through one-pot method using gelatin as structural modifier, is reported. s-Cu₂O catalyst demonstrates exceptional performance reaction (NO3RR), Faradaic (FENH3) 95.07%, 92.03%, conversion rate 97.77%, yield 284.83 µmol h⁻¹ cm⁻2 at -0.8 V versus reversible hydrogen electrode (vs. RHE) production. Structural characterization density functional theory calculations reveal that plays critical role modulating electronic structure catalyst, thereby activating *NO intermediate potential determining step effectively suppressing evolution reaction. Furthermore, it implemented Zn-NO3 - battery, test results indicate battery peak power 3.95 mW cm-2 0.129 (vs Zn/Zn2⁺), illustrating its excellent efficacy. This work introduces novel strategy rational design high-performance electrocatalysts engineering, offering broad implications energy-efficient synthesis, cycling.

Language: Английский

Citations

0
Co0 and CoOx Nanoclusters Encapsulated in Carbon Microspheres for the Low‐Temperature Enhanced Reduction of NOx by CO DOI Open Access
Xinyu Zhang, Yixi Wang, Wenqing Xu

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 29, 2025

Abstract Efficient low‐temperature NO reduction by transition metal‐based catalysts remains a significant challenge. In this study, Co‐based catalyst, Co 0 +CoO x @CS, encapsulated carbon microspheres and synthesized via one‐step in situ hydrothermal method, exhibits excellent conversion, exceeding 99% at 150 °C. X‐ray Absorption Fine Structure analysis reveals electronic interactions between C Co, anchoring nanoclusters to the microspheres. The resulting microporous structure enhances reactant accessibility facilitates N─O bond cleavage. Furthermore, 13 O isotopic tracing experiments reveal that follows an ONNO pathway, which adsorbed CO induces dissociation of * ONN , weakly or gaseous promotes further decomposition N 2 . Specifically, species enhance adsorption, while CoO favor with oxygen vacancy‐mediated transfer driving catalytic cycle. This study presents novel approach for preparing offers effective strategy efficient reduction.

Language: Английский

Citations

0