Ternary Synergy in Layered Double Hydroxides for Efficient and Stable Nitrate Reduction DOI Creative Commons
Jiaqian Kang, Yuxuan Xiao, Lun Li

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 8, 2025

Abstract Nitrate pollution from agricultural runoff and industrial discharge poses severe environmental health risks, necessitating sustainable remediation. Electrocatalytic nitrate reduction reaction (NO 3 RR) offers a promising solution by converting to ammonia, where catalysts with high activity selectivity are needed. Here, it is reported that layered double hydroxides (LDHs) can achieve highly efficient NO RR performance through composition engineering in situ reconstruction. It shown ternary CuZnFe LDH catalyst leverage synergistic effects controlled surface reconstruction for stable of ammonia. During RR, copper compound reduced metallic state enhanced activity, reconstructed iron oxide stabilizes the structure improves zinc selectively leached expose active sites. In ATR‐FTIR spectroscopy reveals initiates nitrate‐to‐nitrite conversion, while drives ammonia formation. As result, achieves Faraday efficiency 95% an yield 51 mg h⁻ 1 cm⁻ 2 , current density 0.64 A at −0.9 V vs. RHE, stability. The findings provide insightful understanding on mechanism, novel strategies design tandem advanced

Язык: Английский

Electro‐Reconstructed Transition Metal Electrodes for Coupled‐Upgrading of Nitrate Pollution and Waste Poly(Ethylene Terephthalate) Plastics DOI Open Access
Haoye Wang, Bowen Yang, Richard L. Smith

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 28, 2025

Abstract Two unrelated forms of pollution, nitrate‐containing wastewater and waste poly(ethylene terephthalate) (PET) plastics, can be converted into high‐value chemicals by electrochemical reduction oxidation reactions. Herein, coupled electrocatalysis is used for the co‐production ammonia (NH 3 ) formic acid (FA) with a cathode formed reconstructing Co on copper foam (R‐Co/CF) as catalyst nitrate reaction (NO RR) an anode NiCo nickel (R‐NiCo/NF) ethylene glycol (EGOR). The Faraday efficiency R‐Co/CF 96.2% that R‐NiCo/NF catalysts 98.2%. By coupling NO RR PET hydrolysate reaction, cell voltage required at current density 50 mA cm −2 202 mV lower than traditional electrolytic system, indicating electrocatalytic upcycling plastics energy‐saving cost‐effective strategy producing value‐added chemicals. Techno‐economic analysis indicates compared RR//OER RR//PET system save 2.8 × 10 kW h −1 in electricity generate ≈6 900 USD revenue per tonne NH .

Язык: Английский

Процитировано

2

Tailoring Electronic and Morphology Features of Iron‐Doped Ni2P Nanoflowers for Enhanced Ammonia Electrosynthesis in Solid Electrolyte Reactors DOI Open Access
Qi Zhang,

Congcong Ni,

Ning Deng

и другие.

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 13, 2025

Abstract Electrochemical nitrate (NO 3 − ) reduction to ammonia (NH presents a promising route for both wastewater treatment and generation but still suffers from sluggish catalytic activity, insufficient mass transfer, the reliance on high‐concentration supporting electrolytes. This work reports an innovative efficient electrosynthesis reactor by integrating self‐assembled iron‐doped Ni 2 P (Fe‐Ni P/NF) nanoflower cathode with solid‐electrolyte (SE). The SE design eliminates need electrolytes, providing highly ion‐conducting pathway enabling direct production of NH NO . Through tailoring electronic surface characteristics Fe‐Ni P/NF, this achieves complete reduction, 96.7% selectivity, 81.8% faradaic efficiency concentration 100 m at current density mA −2 Density functional theory (DFT) calculations reveal that phosphating Fe doping synergistically enhance adsorption increase availability active hydrogen, thus favoring low energy barrier 0.695 eV. Additionally, superhydrophilicity P/NF catalyst promotes transfer facilitating electrolyte access ensuring rapid gas bubble release. study provides sustainable scalable method converting ‐laden into valuable products.

Язык: Английский

Процитировано

2

Enabling High Performance in a Positive Potential of Nitrate‐to‐Ammonia Electrocatalysis Over Mesoporous Core@Shell Cu2O/Cu@PdCu Nanozyme DOI

Lizhi Sun,

Xiaowen Min,

Jingru Wang

и другие.

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 2, 2025

Electrocatalytic tandem nitrate reduction to ammonia (NO3 --to-NH3) offers a promising pathway for energy and environmental sustainability. Although considerable efforts have been presented modulate the reaction pathways enhanced NO3 --to-NH3 electrocatalysis, these advances often require relatively high overpotentials balance yield rate selectivity of NH3, resulting in remarkable inefficiency. Inspired by enzyme catalysis nature, herein enzyme-like electrocatalyst is designed consisting core Cu2O/Cu heterojunction surrounded mesoporous PdCu shell (Cu2O/Cu@mesoPdCu) that accelerated electrocatalysis positive potentials. Impressively, Cu2O/Cu@mesoPdCu nanozymes hold superior performance robust NH3 electrosynthesis fairly potential 0.10 V (versus reversible hydrogen electrode), having Faraday efficiency 96.2%, 13.3 mg h-1 mg-1, half-cell 46.0%. Kinetic studies, situ spectra density functional theory calculations revealed preferentially adsorbed - further reduced *NO2, while active radicals enriched on promoted multistep hydrodeoxygenation *NO2 within "semi-closed" microenvironment, both which synergistically enabled Moreover, this disclosed better more energy-efficient manner when coupling with thermodynamically favorable ethanol oxidation reaction.

Язык: Английский

Процитировано

1

Unveiling the surface reconstruction of CoWO4 on electrocatalytic nitrate reduction reaction DOI

Qingna Gong,

Han Zhao, Wenda Zhang

и другие.

Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 158819 - 158819

Опубликована: Дек. 1, 2024

Язык: Английский

Процитировано

4

Tailored Heterogeneous Catalysts via Space‐Confined Engineering for Efficient Electrocatalytic Oxygen Evolution DOI Open Access

Chenxiao Wu,

Chuang Liu, Ang Gao

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 11, 2025

Abstract Enhancing the intrinsic activity and number of catalytic sites is crucial in developing high‐performing robust electrocatalysts. Reductionism provides a material design concept that progresses from atoms to phases then phase sequences. Herein, well‐recognized high‐active (CoFe)Se 2 multi‐site (CoFe)─N─C are carefully selected creatively combined by space‐confined selenization, resulting @(CoFe)─N─C heterogeneous nanocatalyst. This simultaneously yields “better” “more” active enable stronger reaction kinetics with low overpotential 238 mV at 10 mA cm −2 for oxygen evolution reaction. The surprisingly remained almost unchanged after an ultra‐long 500 h continuous ideal combination effectively optimizes absorption capacity alters rate‐determining step *O→*OOH *OH→*O. work demonstrates principles reductionism confined engineering, opening promising avenue designing constructing efficient multi‐phase nanomaterials.

Язык: Английский

Процитировано

0

Surface reconstruction regulation of catalysts for cathodic catalytic electrosynthesis DOI Creative Commons

Ye Zeng,

Jia Liang,

Weiwei Zhong

и другие.

Applied Catalysis O Open, Год журнала: 2025, Номер unknown, С. 207036 - 207036

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0

Phosphorus‐Modulated Cobalt Nanosheets with Confined Metal Defects for Enhanced Kinetics in Nitrite‐Glycerol Co‐Electrolysis DOI Open Access
Zhangjing Yu, Kai Chen, Yun Tong

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 27, 2025

Abstract Exploring advanced electrocatalysts for the paired electrolysis of nitrite reduction reaction (NO 2 RR) and glycerol oxidation (GOR) is significance co‐production value‐added chemicals, but remains a great challenge. Herein, novel phosphorus‐modulated cobalt nanosheet with low‐coordination metallic sites (P 3 ‐Co) developed as an electrocatalyst efficient nitrite‐glycerol co‐electrolysis. The membrane electrode assembled NO RR‖GOR electrolyzer realizes promising operation performance high Faradaic efficiencies yields NH (98.2%, 29.3 mg h −1 cm −2 ) formate (93.4%, 85.7 at 1.5 V, well superior catalytic stability over long‐term 300 100 mA . in situ characterizations theoretical calculations are employed to reveal origin intrinsic activity P ‐Co, suggesting that metal Co defects P‐modulation beneficial optimizing electronic structure adsorption/activation barriers N‐containing intermediates accelerated conversion kinetics both GOR RR. This work offers guidance exploiting highly‐active generation high‐value‐added products.

Язык: Английский

Процитировано

0

High-efficiency ammonia electrosynthesis from nitrate on ruthenium-induced trivalent cobalt sites DOI Creative Commons
Longcheng Zhang, Yuan Liu, Ling Li

и другие.

Energy & Environmental Science, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

This work highlights the potential of nitrate reduction as a viable and sustainable alternative for green ammonia production, bridging gap between fundamental research industrial application.

Язык: Английский

Процитировано

0

Ammonia-mediated CO2 adsorption for ammonium bicarbonate production via simultaneous CO2 capture and nitrate electroreduction in a flow cell with all sputtered thin film electrodes DOI
Quoc‐Nam Ha,

Yu-Chan Chan,

Dong‐Hau Kuo

и другие.

Applied Catalysis B Environment and Energy, Год журнала: 2025, Номер 376, С. 125477 - 125477

Опубликована: Май 13, 2025

Язык: Английский

Процитировано

0

Ternary Synergy in Layered Double Hydroxides for Efficient and Stable Nitrate Reduction DOI Creative Commons
Jiaqian Kang, Yuxuan Xiao, Lun Li

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 8, 2025

Abstract Nitrate pollution from agricultural runoff and industrial discharge poses severe environmental health risks, necessitating sustainable remediation. Electrocatalytic nitrate reduction reaction (NO 3 RR) offers a promising solution by converting to ammonia, where catalysts with high activity selectivity are needed. Here, it is reported that layered double hydroxides (LDHs) can achieve highly efficient NO RR performance through composition engineering in situ reconstruction. It shown ternary CuZnFe LDH catalyst leverage synergistic effects controlled surface reconstruction for stable of ammonia. During RR, copper compound reduced metallic state enhanced activity, reconstructed iron oxide stabilizes the structure improves zinc selectively leached expose active sites. In ATR‐FTIR spectroscopy reveals initiates nitrate‐to‐nitrite conversion, while drives ammonia formation. As result, achieves Faraday efficiency 95% an yield 51 mg h⁻ 1 cm⁻ 2 , current density 0.64 A at −0.9 V vs. RHE, stability. The findings provide insightful understanding on mechanism, novel strategies design tandem advanced

Язык: Английский

Процитировано

0