Coupling Co-Ni phosphides for energy-saving alkaline seawater splitting

Nano Research, Journal Year: 2024, Volume and Issue: 17(6), P. 4797 - 4806

Published: Feb. 7, 2024

Language: Английский

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Tandem Electrocatalytic Reduction of Nitrite to Ammonia on Rhodium–Copper Single Atom Alloys

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(36)

Published: April 23, 2024

Abstract Electrocatalytic reduction of NO 2 − to NH 3 (NO RR) presents a fascinating approach for simultaneously migrating pollutants and producing valuable . In this study, single‐atom Rh‐alloyed copper (CuRh 1 ) is explored as highly active selective catalyst toward the RR. Combined theoretical calculations in situ FTIR/EPR spectroscopic experiments uncover synergistic effect Rh Cu promote RR energetics CuRh through tandem catalysis pathway, which activates preliminary adsorption hydrogenation → *NO *NOOH *NO), while generated on then transferred substrate promotes rate‐determining step *NHO synthesis. As result, equipped flow cell an unprecedented yield rate 2191.6 µmol h −1 cm −2 ‐Faradaic efficiency 98.9% at high current density 322.5 mA , well long‐term stability 100 electrolysis.

Language: Английский

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5‐Hydroxymethylfurfural and its Downstream Chemicals: A Review of Catalytic Routes

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(37)

Published: May 29, 2024

Abstract Biomass assumes an increasingly vital role in the realm of renewable energy and sustainable development due to its abundant availability, renewability, minimal environmental impact. Within this context, 5‐hydroxymethylfurfural (HMF), derived from sugar dehydration, stands out as a critical bio‐derived product. It serves pivotal multifunctional platform compound, integral synthesizing various chemicals, including furan‐based polymers, fine biofuels. The high reactivity HMF, attributed highly active aldehyde, hydroxyl, furan ring, underscores challenge selectively regulating conversion obtain desired products. This review highlights research progress on efficient catalytic systems for HMF synthesis, oxidation, reduction, etherification. Additionally, it outlines techno‐economic analysis (TEA) prospective directions production chemicals. Despite significant catalysis research, certain process routes demonstrating substantial economics, with key indicators surpassing petroleum‐based products, gap persists between fundamental large‐scale industrialization. is lack comprehensive engineering bio‐based making commercialization distant goal. These findings provide valuable insights further field.

Language: Английский

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Electrochemical Nitrate Reduction to Ammonia on CuCo Nanowires at Practical Level

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(44)

Published: May 27, 2024

Abstract Electrochemical reduction of nitrate (NO 3 RR) holds great promise for environmentally friendly ammonia production. Tandem catalysis is a promising strategy boosting the NO RR and inhibiting side effects, but it still challenged by lacking well‐designed catalysts to drive this catalytic process. Herein, study develops CuCo branched nanowires (CuCo NW) catalyst, which efficiently converts − NH on Co (111) Cu crystal facets through tandem mechanism. The in situ grown NW foam demonstrates remarkable Faraday efficiency 90.3% at 1.0 A cm −2 maintains stable operation 200 h 100 mA flow reactor. Density functional theory calculations suggest that initial absorption subsequent deoxygenation *NO leading formation 2 , followed its transfer further conversion *NH establish an optimal pathway managing rate‐determining steps individual surfaces RR. To showcase practical application scaling‐up prototype reactor continuous production, realizing gram‐level yield rate 1474.09 mg −1 91.26% practical‐level 20.0 A.

Language: Английский

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Advancements in Electrocatalytic Nitrogen Reduction: A Comprehensive Review of Single‐Atom Catalysts for Sustainable Ammonia Synthesis

Small, Journal Year: 2024, Volume and Issue: 20(32)

Published: March 22, 2024

Abstract Electrocatalytic nitrogen reduction technology seamlessly aligns with the principles of environmentally friendly chemical production. In this paper, a comprehensive review recent advancements in electrocatalytic NH 3 synthesis utilizing single‐atom catalysts (SACs) is offered. Into research and applications three categories SACs: noble metals (Ru, Au, Rh, Ag), transition (Fe, Mo, Cr, Co, Sn, Y, Nb), nonmetallic (B) context ammonia delved. In‐depth insights into material preparation methods, coordination patterns, characteristics reaction (NRR) are provided. The systematic comparison capabilities various SAC types offers framework for their integration NRR. Additionally, challenges, potential solutions, future prospects incorporating SACs endeavors discussed.

Language: Английский

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Bioinspired Tandem Electrode for Selective Electrocatalytic Synthesis of Ammonia from Aqueous Nitrate

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(4), P. 2144 - 2152

Published: Jan. 18, 2024

The electrocatalytic nitrate reduction reaction (NO3RR) has recently emerged as a promising technique for readily converting aqueous (NO3–) pollutants into valuable ammonia (NH3). It is vital to thoroughly understand the mechanism of rationally design and construct advanced systems that can effectively selectively drive NO3RR. There are several natural enzymes incorporate molybdenum (Mo) activate NO3–. Based on this, cadmium (Cd) single-atom anchored Mo2TiC2Tx electrocatalyst (referred CdSA-Mo2TiC2Tx) through NO3RR generate NH3 was designed demonstrated. In an H-type electrolysis cell at current density 42.5 mA cm–2, had Faradaic efficiency >95% impressive yield rate 48.5 mg h–1 cm–2. Moreover, conversion NO3– CdSA-Mo2TiC2Tx surface further revealed by operando attenuated total reflection Fourier-transform infrared spectroscopy electrochemical differential mass spectrometer. significantly outperformed well reported state-of-the-art catalysts. Density functional theory calculations decreased ability d-p orbital hybridize with NH3* intermediates, thereby decreasing activation energy potential-determining step. This work not only highlights application prospects heavy metal catalysts in but also provides examples bio-inspired electrocatalysts synthesis NH3.

Language: Английский

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通过镧掺杂调控提升电子缺陷型Co3O4的硝酸盐电还原制氨效率

Science China Materials, Journal Year: 2024, Volume and Issue: unknown

Published: April 30, 2024

Electrocatalytic reduction of nitrate (NO3−) can efficiently transform NO3− into ammonia (NH3), enabling the simultaneous removal pollutant from wastewater and production NH3. Here, we report use rare-earth lanthanum-doped Co3O4 nanowires array on carbon cloth (La-Co3O4/CC) as an efficient electrocatalyst for conversion to The as-synthesized La-Co3O4/CC demonstrates a remarkable NH3 Faradaic efficiency (96.36%) yield (537.44 µmol h−1 cm−2), markedly surpassing its counterpart (87.78%, 279.4 cm−2). Theoretical computations unveil that incorporation La doping promotes adsorption optimizes hydrogenation process, thus enhancing electroreduction activity in selectivity. Furthermore, Zn–NO3− battery incorporating achieved peak power density 9.86 mW cm−2. This work advances application Co3O4-based electrodes electrocatalysis highlights effectiveness rare earth element reactions.

Language: Английский

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Advances in the Energy‐Saving Electro‐Oxidation of 5‐Hydroxymethylfurfural to 2,5‐Furandicarboxylic Acid

Advanced Sustainable Systems, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 5, 2025

Abstract As a pivotal bio‐based building block, 2,5‐furandicarboxylic acid (FDCA) holds immense and broad application potential in the chemistry industry. Its polymeric derivative, polyethylene furandicarboxylate (PEF), emerges as an appealing alternative to conventional petroleum‐based terephthalate (PET). The electrochemical route for oxidizing 5‐hydroxymethylfurfural (HMF) into FDCA presents significant advantages over thermochemical processes, without requirements of high temperature, pressure, chemical oxidants, precious metal catalysts, featuring higher energy efficiency. Furthermore, electrosynthesis at anode can be synergistically integrated with selective reduction reactions cathode, enabling simultaneous production two desirable value‐added products further enhancing overall utilization This work reviews advancements electrocatalytic HMF (EHTF), encompassing catalyst design, reaction mechanisms, coupling strategies, reactor configurations. It also indicates challenges opportunities EHTF provides insights future development directions.

Language: Английский

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Symmetry-Breaking p-Block Antimony Single Atoms Trigger N-Bridged Titanium Sites for Electrocatalytic Nitrogen Reduction with High Efficiency

ACS Nano, Journal Year: 2023, Volume and Issue: 17(21), P. 21838 - 21849

Published: Nov. 1, 2023

The electrochemical nitrogen reduction reaction (eNRR) under mild conditions emerges as a promising approach to produce ammonia (NH

Language: Английский

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CoNiOOH nanosheets array enables highly effective value-added chemicals production via nitrite and sulfide electrolysis

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 155799 - 155799

Published: Sept. 1, 2024

Language: Английский

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