Biological Waste-Derived Dual-Site Catalyst Empowers Electro-Fenton Systems to Sustainably Decontaminate Livestock Wastewater DOI
Keyu Chen,

Yun-Xin Huang,

Qian Zhang

и другие.

ACS ES&T Engineering, Год журнала: 2024, Номер unknown

Опубликована: Авг. 15, 2024

Livestock and poultry industries are pivotal for meat production, but produced wastewater with heavy pollution challenges environmental sustainability public health. The electro-Fenton (EF) process, capable of in situ production activation hydrogen peroxide, is promising decontaminating recalcitrant pollutants, yet fabricating a highly active bifunctional cathode catalyst across broad pH range remains bottleneck. Guided by green chemistry principles, we synthesized dual-site from biological waste to facilitate hydroxyl radical production. Combined experimental theoretical investigations unveiled that the Fe2O3 sites facilitated H2O2 generation via catalyzing oxygen reduction reaction, whereas Fe3N promoted into radicals. This electrocatalyst, integrated gas diffusion electrode, achieved stable, aeration-free mineralization antibiotic contaminants at neutral low energy consumption just 0.94 kWh/g removed total organic carbon. further development tandem system coupled anammox bioprocess EF process exhibited exceptional efficiency both nitrogen removal tertiary purification actual livestock wastewater, obviating need adjustments or Fenton reagent additives. These findings underscore potential scalability application our proposed approach promoting sustainable management practices.

Язык: Английский

Advancing H2O2 electrosynthesis: enhancing electrochemical systems, unveiling emerging applications, and seizing opportunities DOI
Zhiping Deng, Seung Joon Choi, Ge Li

и другие.

Chemical Society Reviews, Год журнала: 2024, Номер 53(16), С. 8137 - 8181

Опубликована: Янв. 1, 2024

Hydrogen peroxide (H

Язык: Английский

Процитировано

22
Host-guest-induced electronic state triggers two-electron oxygen reduction electrocatalysis DOI Creative Commons

Hongni Chen,

Chao Wang,

Han Wu

и другие.

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Окт. 25, 2024

Supramolecular polymers possess great potential in catalysis owing to their distinctive molecular recognition and dynamic crosslinking features. However, investigating supramolecular electrocatalysts with high efficiency oxygen reduction reaction hydrogen peroxide (ORHP) remains an unexplored frontier. Herein, we present organic for ORHP by introducing cyclodextrin-containing noncovalent building blocks, affording these supramolecules abundant bonds. The electronic states kinetics are further well-modulated via a host-guest strategy, resulting appropriate regional electron binding force controllable chemical activity. Notably, integrating units into phenyl group-containing model covalent polymer achieves production rate of 9.14 mol g

Язык: Английский

Процитировано

18
Water Spillover to Expedite Two‐Electron Oxygen Reduction DOI Open Access

Qianyi Li,

Zhihao Nie,

Wenqiang Wu

и другие.

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 5, 2025

Abstract Limited by the activity‐selectivity trade‐off relationship, electrochemical activation of small molecules (like O 2 , N 2, and CO ) rapidly diminishes Faradaic efficiencies with elevated current densities (particularly at ampere levels). Nevertheless, some catalysts can circumvent this restriction in a two‐electron oxygen reduction reaction (2e − ORR), sustainable pathway for activating to hydrogen peroxide (H ). Here we report 2e ORR expedited fluorine‐bridged copper metal–organic framework catalyst, arising from water spillover effect. Through operando spectroscopies, kinetic theoretical characterizations, it demonstrates that under neutral conditions, plays dual role accelerating dissociation stabilizing key * OOH intermediate. Benefiting spillover, catalyst expedite density range 0.1–2.0 A cm −2 both high (99–84.9%) H yield rates (63.17–1082.26 mg h −1 Further, feasibility present system has been demonstrated scaling up unit module cell 25 combination techno‐economics simulations showing production cost strongly dependent on densities, giving lowest price $0.50 kg 2.0 . This work is expected provide an additional dimension leverage systems independent oftraditional rules.

Язык: Английский

Процитировано

2
Recent strategies to improve the electroactivity of metal–organic frameworks for advanced electrocatalysis DOI Creative Commons

Runzhi Wei,

Xiao Li, Aziz B. Ibragimov

и другие.

Deleted Journal, Год журнала: 2024, Номер 1(2), С. 181 - 206

Опубликована: Авг. 4, 2024

Abstract Metal–organic frameworks (MOFs) have emerged as promising materials in the realm of electrocatalysis due to their high surface area, tunable porosity, and versatile chemical functionality. However, practical application has been hampered by inherent limitations such low electrical conductivity a limited number active metal sites. Researchers addressed these challenges through various strategies, including enhancing incorporating conductive nanoparticles, modifying structure composition MOFs replacing nodes functionalizing linkers, preparing catalysts thermal processes decarburization conversion into oxides, phosphides (MPs), sulfides (MSs). This review provided comprehensive summary strategies that were employed enhance electroactivity for improved electrocatalytic performance recent years. It also explored future directions potential innovations design synthesis MOF‐based electrocatalysts, offering valuable insights advancing sustainable energy technologies.

Язык: Английский

Процитировано

11
Stability challenges of transition metal-modified cathodes for electro-Fenton process: A mini-review DOI
Chao Wang,

Tao Li,

Qianyin Deng

и другие.

Chemosphere, Год журнала: 2025, Номер 373, С. 144159 - 144159

Опубликована: Янв. 30, 2025

Язык: Английский

Процитировано

1
Carbon powder from sugarcane bagasse: controlled synthesis for on-demand H2O2 electrogeneration DOI
Daniel Couto Sperandio, Júlio César Lourenço, Bruno M. Nogueira

и другие.

Renewable Energy, Год журнала: 2025, Номер unknown, С. 122715 - 122715

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

1
Engineering Asymmetric Electronic Structure of Co─N─C Single‐Atomic Sites Toward Excellent Electrochemical H2O2 Production and Biomass Upgrading DOI Open Access
Kun Yu, Shiyou Guan, Wenbiao Zhang

и другие.

Angewandte Chemie International Edition, Год журнала: 2025, Номер unknown

Опубликована: Март 11, 2025

Abstract To advance electrochemical H 2 O production and unravel catalytic mechanisms, the precise structural coordination of single‐atomic M‐N‐C electrocatalysts is urgently required. Herein, Co─N 5 site with an asymmetric electronic configuration constructed to boost two‐electron oxygen reduction reaction (2e − ORR) compared symmetric 4 , effectively overcoming trade‐off between activity selectivity in production. Both experimental theoretical analyses demonstrate that breaking symmetry sites promotes activation molecules moderates adsorption key *OOH intermediate by disrupting linear scaling relationship for intermediates adsorption. This modulation enables efficient H₂O₂ its effective retention subsequent applications. As a proof concept, achieves rate as high 16.1 mol g cat −1 h flow cell, outperforming most recently reported counterparts. Furthermore, coupling 2e ORR oxidation cellulose‐derived carbohydrates accomplishes formic acid yields (84.1% from glucose 62.0%–92.1% other substrates), underpinning sustainable electro‐refinery biomass valorization at ambient conditions. By elucidating intrinsic 2e⁻ asymmetry sites, this work paves way high‐performance electrosynthesis.

Язык: Английский

Процитировано

1
Atomically Dispersed Co/Mo Sites Anchored on Mesoporous Carbon Hollow Spheres for Highly Selective Oxygen Reduction to Hydrogen Peroxide in Acidic Media DOI Open Access
Min Yang,

Weihao Song,

Chengjin Chen

и другие.

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 14, 2025

Abstract Two‐electron oxygen reduction reaction (2e − ORR) in acidic media is a promising route for the decentralized and on‐site hydrogen peroxide (H 2 O ) generation. Nevertheless, strong interaction between active sites * OOH intermediates usually induces O─O bond cleavage to convert 2e pathway into sluggish 4e ORR. Therefore, it highly necessary optimize electronic structure of ORR electrocatalysts regulation adsorption energy. Herein, we propose utilization atomically dispersed Co/Mo anchored on mesoporous carbon hollow spheres (Co/Mo‐MCHS) via template‐engaged strategy selective H acid. Benefitting from electron‐donating effect Mo atoms, an enriched electron density around Co center Co/Mo‐MCHS observed, resulting optimal key approach apex volcano plot. Moreover, introduction species simultaneously suppresses electroreduction as‐obtained sites. As consequence, delivers high selectivity 90–95% The flow cell based catalyst achieves remarkable yield 2102 mg 150 h. this can be extended other early transition metal elements with similar modifier effects.

Язык: Английский

Процитировано

1
Metal Atom–Support Interaction in Single Atom Catalysts toward Hydrogen Peroxide Electrosynthesis DOI
Hao Zhang, Haitao Xu, Canglang Yao

и другие.

ACS Nano, Год журнала: 2024, Номер 18(33), С. 21836 - 21854

Опубликована: Авг. 7, 2024

Single metal atom catalysts (SACs) have garnered considerable attention as promising agents for catalyzing important industrial reactions, particularly the electrochemical synthesis of hydrogen peroxide (H

Язык: Английский

Процитировано

7
Periodic Single‐Metal Site Catalysts: Creating Homogeneous and Ordered Atomic‐Precision Structures DOI
Tianyu Zhang, Dingsheng Wang, Junfeng Liu

и другие.

Advanced Materials, Год журнала: 2024, Номер 36(41)

Опубликована: Авг. 16, 2024

Abstract Heterogeneous single‐metal‐site catalysts (SMSCs), often referred to as single‐atom (SACs), demonstrate promising catalytic activity, selectivity, and stability across a wide spectrum of reactions due their rationally designed microenvironments encompassing coordination geometry, binding ligands, electronic configurations. However, the inherent disorderliness SMSCs at both atomic scale nanoscale poses challenges in deciphering working principles establishing correlations between performances SMSCs. The rearrangement randomly dispersed single metals into homogeneous atomic‐precisely structured periodic single‐metal site (PSMSCs) not only simplifies chaos systems but also unveils new opportunities for manipulating performance gaining profound insights reaction mechanisms. Moreover, synergistic effects adjacent integration arrangement further broaden industrial application scope This perspective offers comprehensive overview recent advancements outlines prospective avenues research design characterizations PSMSCs, while acknowledging formidable encountered prospects that lie ahead.

Язык: Английский

Процитировано

6