A self-reactivated PdCu catalyst for aldehyde electro-oxidation with anodic hydrogen production DOI Creative Commons
Ming Yang, Yimin Jiang, Chung‐Li Dong

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Nov. 14, 2024

The low-potential aldehyde oxidation reaction can occur at low potential (~0 VRHE) and release H2 the anode, enabling hydrogen production with less than one-tenth of energy consumption required for water splitting. Nevertheless, activity stability Cu catalysts remain inadequate due to oxidative deactivation Cu-based materials. Herein, we elucidate reactivation cycle electrocatalyst develop a self-reactivating PdCu catalyst that exhibits significantly enhanced stability. Initially, in-situ Raman spectroscopy confirm involved in electrochemical non-electrochemical reduction. Subsequently, X-ray absorption fine structure reveal Pd component accelerates rate reduction, thereby enhancing electrocatalyst. Finally, bipolar device is assembled utilizing electrocatalyst, which deliver current 400 mA cm−2 0.42 V operate continuously 120 h. This work offers guidance enhance system. A dual-side system more efficient splitting but suffers from issues. Here, authors report operates stably h, offering an alternative solution energy-efficient production.

Language: Английский

Bifunctional Electrocatalysts for Overall and Hybrid Water Splitting DOI
Quan Li, Hui Jiang,

Guoliang Mei

et al.

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(7), P. 3694 - 3812

Published: March 22, 2024

Electrocatalytic water splitting driven by renewable electricity has been recognized as a promising approach for green hydrogen production. Different from conventional strategies in developing electrocatalysts the two half-reactions of (e.g., and oxygen evolution reactions, HER OER) separately, there growing interest designing bifunctional electrocatalysts, which are able to catalyze both OER. In addition, considering high overpotentials required OER while limited value produced oxygen, is another rapidly exploring alternative oxidation reactions replace hybrid toward energy-efficient generation. This Review begins with an introduction on fundamental aspects splitting, followed thorough discussion various physicochemical characterization techniques that frequently employed probing active sites, emphasis reconstruction during redox electrolysis. The design, synthesis, performance diverse based noble metals, nonprecious metal-free nanocarbons, overall acidic alkaline electrolytes, thoroughly summarized compared. Next, their application also presented, wherein anodic include sacrificing agents oxidation, pollutants oxidative degradation, organics upgrading. Finally, concise statement current challenges future opportunities presented hope guiding endeavors quest sustainable

Language: Английский

Citations

268
Emerging materials and technologies for electrocatalytic seawater splitting DOI Creative Commons
Huanyu Jin, Jun Xu, Hao Liu

et al.

Science Advances, Journal Year: 2023, Volume and Issue: 9(42)

Published: Oct. 18, 2023

The limited availability of freshwater in renewable energy-rich areas has led to the exploration seawater electrolysis for green hydrogen production. However, complex composition presents substantial challenges such as electrode corrosion and electrolyzer failure, calling into question technological economic feasibility direct splitting. Despite many efforts, a comprehensive overview analysis electrolysis, including electrochemical fundamentals, materials, technologies recent breakthroughs, is still lacking. In this review, we systematically examine advances electrocatalytic splitting critically evaluate obstacles optimizing water supply, devices stable production from seawater. We demonstrate that robust materials innovative technologies, especially selective catalysts high-performance devices, are critical efficient electrolysis. then outline discuss future directions could advance techno-economic emerging field, providing roadmap toward design commercialization can enable efficient, cost-effective, sustainable

Language: Английский

Citations

163
Electrochemical hydrogenation and oxidation of organic species involving water DOI
Cuibo Liu, Fanpeng Chen, Bo‐Hang Zhao

et al.

Nature Reviews Chemistry, Journal Year: 2024, Volume and Issue: 8(4), P. 277 - 293

Published: March 25, 2024

Language: Английский

Citations

72
A coupled electrocatalytic system with reduced energy input for CO2 reduction and biomass valorization DOI
Shaoqing Liu, Min‐Rui Gao,

Shuwen Wu

et al.

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(11), P. 5305 - 5314

Published: Jan. 1, 2023

A cathodic electrochemical CO 2 reduction to formate coupled anodic 5-hydroxymethylfurfural electrooxidation 2,5-furandicarboxylic acid pair electrolysis system was developed for conversion and biomass valorization with low energy consumption.

Language: Английский

Citations

51
Seawater electrolysis for fuels and chemicals production: fundamentals, achievements, and perspectives DOI
Lin Chen,

Chang Yu,

Junting Dong

et al.

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(14), P. 7455 - 7488

Published: Jan. 1, 2024

Seawater electrolysis for the production of fuels and chemicals involved in onshore offshore plants powered by renewable energies offers a promising avenue unique advantages energy environmental sustainability. Nevertheless, seawater presents long-term challenges issues, such as complex composition, potential side reactions, deposition poisoning microorganisms metal ions, well corrosion, thus hindering rapid development technology. This review focuses on value-added (hydrogen beyond) fine through electrolysis, step towards sustainable carbon neutrality. The principle related are first introduced, redox reaction mechanisms summarized. Strategies operating anodes cathodes including application chloride- impurity-resistant electrocatalysts/membranes reviewed. We comprehensively summarize (hydrogen, monoxide, sulfur, ammonia,

Language: Английский

Citations

38
Cobalt Single‐Atom Reverse Hydrogen Spillover for Efficient Electrochemical Water Dissociation and Dechlorination DOI

Qian Zheng,

Hengyue Xu, Yancai Yao

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(19)

Published: March 16, 2024

Abstract Efficient water dissociation to atomic hydrogen (H*) with restrained recombination of H* is crucial for improving the utilization electrochemical dechlorination, but currently limited by lack feasible electrodes. Herein, we developed a monolithic single‐atom electrode Co single atoms anchored on inherent oxide layer titanium foam (Co 1 −TiO x /Ti), which can efficiently dissociate into and simultaneously inhibit H*, taking advantage reverse spillover effect. Experimental theoretical calculations demonstrated that could be rapidly generated foam, then overflowed adjacent atom reductive dechlorination. Using chloramphenicol as proof‐of‐concept verification, resulting /Ti exhibited an unprecedented performance almost 100 % dechlorination at −1.0 V, far superior traditional indirect reduction‐driven commercial Pd/C (52 %) direct −N−C (44 %). Moreover, its rate constant 1.64 h −1 was 4.3 8.6 times more active than those (0.38 ) (0.19 ), respectively. Our research sheds light rational design spillover‐related electrocatalysts improve generation, transfer, environmental energy applications.

Language: Английский

Citations

37
Sustainable Electrosynthesis of Cyclohexanone Oxime through Nitrate Reduction on a Zn–Cu Alloy Catalyst DOI Creative Commons
Jonathan Sharp,

Anna Ciotti,

Hayley G. Andrews

et al.

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(5), P. 3287 - 3297

Published: Feb. 15, 2024

Cyclohexanone oxime is an important precursor for Nylon-6 and typically synthesized via the nucleophilic addition–elimination of hydroxylamine with cyclohexanone. Current technologies production are, however, not environment-friendly due to requirement harsh reaction conditions. Here, we report electrochemical method one-pot synthesis cyclohexanone under ambient conditions aqueous nitrate as nitrogen source. A series Zn–Cu alloy catalysts are developed drive reduction nitrate, where intermediate formed in electroreduction process can undergo a chemical present electrolyte produce corresponding oxime. The best performance achieved on Zn93Cu7 electrocatalyst 97% yield 27% Faradaic efficiency at 100 mA/cm2. By analyzing catalytic activities/selectivities different alloys conducting in-depth mechanistic studies situ Raman spectroscopy theoretical calculations, demonstrate that adsorption species plays central role performance. Overall, this work provides attractive strategy build C–N bond organic through reduction, while highlighting importance controlling surface product selectivity electrosynthesis.

Language: Английский

Citations

25
Electroreductive upgradation of biomass into high-value chemicals and energy-intensive biofuels DOI
Keping Wang, Zheng Li, Zhanhu Guo

et al.

Green Chemistry, Journal Year: 2024, Volume and Issue: 26(5), P. 2454 - 2475

Published: Jan. 1, 2024

Recent advances in electroreductive upgradation of biomass to high-value chemicals and energy-intensive biofuels via various transformation routes are showcased.

Language: Английский

Citations

24
Interfacial Electronic Modulation of Dual-Monodispersed Pt–Ni3S2 as Efficacious Bi-Functional Electrocatalysts for Concurrent H2 Evolution and Methanol Selective Oxidation DOI Creative Commons
Qianqian Zhao, Bin Zhao, Xin Long

et al.

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: Jan. 11, 2024

Constructing the efficacious and applicable bi-functional electrocatalysts establishing out mechanisms of organic electro-oxidation by replacing anodic oxygen evolution reaction (OER) are critical to development electrochemically-driven technologies for efficient hydrogen production avoid CO

Language: Английский

Citations

22
Recent Advances and Perspectives on Coupled Water Electrolysis for Energy‐Saving Hydrogen Production DOI Creative Commons
Jiachen Li,

Yuqiang Ma,

Xiaogang Mu

et al.

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 7, 2025

Abstract Overall water splitting (OWS) to produce hydrogen has attracted large attention in recent years due its ecological‐friendliness and sustainability. However, the efficiency of OWS been forced by sluggish kinetics four‐electron oxygen evolution reaction (OER). The replacement OER alternative electrooxidation small molecules with more thermodynamically favorable potentials may fundamentally break limitation achieve production low energy consumption, which also be accompanied value‐added chemicals than or electrochemical degradation pollutants. This review critically assesses latest discoveries coupled various OWS, including alcohols, aldehydes, amides, urea, hydrazine, etc. Emphasis is placed on corresponding electrocatalyst design related mechanisms (e.g., dual hydrogenation N–N bond breaking hydrazine C═N regulation urea inhibit hazardous NCO − NO productions, etc.), along emerging reactions (electrooxidation tetrazoles, furazans, iodide, quinolines, ascorbic acid, sterol, trimethylamine, etc.). Some new decoupled electrolysis self‐powered systems are discussed detail. Finally, potential challenges prospects highlighted aid future research directions.

Language: Английский

Citations

6