Atomically Dispersed Cu Active Centers: Local Structure and Mechanism Modulation for Carbon Dioxide Reduction

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

Published: Jan. 10, 2025

Abstract Reducing carbon dioxide （CO 2 ）to high‐value products using green renewable energy is a promising approach for addressing and greenhouse effect issues. Consequently, electrocatalytic CO reduction reaction (CO RR) technology has become current research hotspot. Since the discovery of high activity selectivity copper in RR, atomically dispersed Cu catalysts have garnered widespread attention due to their efficient atom utilization, unique electronic structure, outstanding catalytic performance. However, great challenge remains providing rational catalyst design principles achieve regulation product distribution. A clear understanding materials an in‐depth interpretation mechanism as well elucidation strategy progress toward different are keys building solving above problem. Therefore, this review starts with introduction advanced characterization techniques reveal structure mechanisms. Then, various optimization strategies applications producing targeted summarized discussed. Finally, perspectives on RR field future development offered.

Language: Английский

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Towards bridging thermo/electrocatalytic CO oxidation: from nanoparticles to single atoms

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(17), P. 8903 - 8948

Published: Jan. 1, 2024

Proton exchange membrane fuel cells (PEMFCs), as a feasible alternative to replace the traditional fossil fuel-based energy converter, contribute significantly global sustainability agenda. At PEMFC anode, given high current density, Pt/C is deemed catalyst-of-choice ensure that hydrogen oxidation reaction (HOR) occurs at sufficiently fast pace. The performance of Pt/C, however, can only be achieved under premise purity used. For instance, in presence trace level carbon monoxide, typical contaminant during H

Language: Английский

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In‐Situ Anchoring of Co Single‐Atom Synergistically with Cd Vacancy of Cadmium Sulfide for Boosting Asymmetric Charge Distribution and Photocatalytic Hydrogen Evolution

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

Published: Oct. 10, 2024

In the context of reshaping energy pattern, designing and synthesizing high-performance noble metal-free photocatalysts with ultra-high atomic utilization for hydrogen evolution reaction (HER) still remains a challenge. streamlined synthesis process, in-situ single atom anchoring is performed in parallel HER by irradiating precursory defect-state CdS/Co suspension (Co-DCdS-Ss) system under simulated sunlight single-atom Co photocatalyst (Co5:DCdS) exhibits further improved catalytic performance (60.10 mmol g

Language: Английский

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Enhanced Dielectric Loss Induced by Asymmetrically Coordinated Iron Single‐Atoms with Curved Configurations on Turing‐Like Surfaces for Electromagnetic Wave Absorption

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

Published: Sept. 15, 2024

Abstract Curved support can significantly change the electronic structure of a metal single‐atom (M‐SA) and thereby fine tune its intrinsic physicochemical properties. However, constructing asymmetrically coordinated M‐SAs on highly curved supports remains challenging. Here, an efficient strategy driven by different thermal decomposition rates two polymers is proposed to create Turing surface with stripes hollow carbon spheres (HCSs) for anchoring Fe‐N 3 S 1 moieties. Experimental theoretical calculation results reveal that asymmetric atoms strain Fe─N bonds induced efficiently break symmetric distribution charge around Fe enhance dielectric loss HCSs, synergistically improving electromagnetic wave absorption property. Remarkably, film constructed ‐anchored HCSs natural rubber exhibits wide effective bandwidth 7.68 GHz at filling ratio 6%. Moreover, also possesses excellent hydrophobicity, frost‐resistant ability, adhesiveness, flexibility, stretchability, heat‐dispersion which expand practical applications into various environments. This work provides insights synergistic effects configurations their properties offers new method preparation multifunctional films.

Language: Английский

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Thermodynamic stability, catalytic activity, kinetics and electronic properties of Polyoxometalate (TM@V-POM) for efficient electrochemical hydrogen evolution reactions: A DFT understanding

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 117, P. 1 - 11

Published: March 13, 2025

Language: Английский

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Advanced carbon nitride‐based single‐atom photocatalysts

SusMat, Journal Year: 2024, Volume and Issue: 4(5)

Published: July 18, 2024

Abstract Single‐atom catalysts (SACs) have rapidly become a hot topic in photocatalytic research due to their unique physical and chemical properties, high activity, selectivity. Among many semiconductor carriers, the special structure of carbon nitride (C 3 N 4 ) perfectly meets substrate requirements for stabilizing SACs; they can also compensate defects C materials by modifying energy bands electronic structures. Therefore, developing advanced ‐based SACs is great significance. In this review, we focus on elucidating efficient preparation strategies burgeoning applications SACs. We outline prospective enhancing performance future. A comprehensive array methodologies presented identifying characterizing This includes an exploration potential atomic catalytic mechanisms through simulation regulation behaviors synergistic effects single or multiple sites. Subsequently, forward‐looking perspective adopted contemplate future prospects challenges associated with encompasses considerations, such as loading, regulatory design, integration machine learning techniques. It anticipated that review will stimulate novel insights into synthesis high‐load durable SACs, thereby providing theoretical groundwork scalable controllable field.

Language: Английский

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In situ/Operando Investigation for Heterogeneous Electro-Catalysts: From Model Catalysts to State-of-the-Art Catalysts

ACS Energy Letters, Journal Year: 2024, Volume and Issue: 9(9), P. 4414 - 4440

Published: Aug. 17, 2024

Electrochemical reactions, including water splitting, oxygen reduction, hydrogen oxidation, carbon dioxide nitrogen oxide etc., are critical for sustainable energy conversion and storage. Achieving high efficiency in these reactions requires catalysts with superior activity, selectivity, stability, often realized through nanostructured metal catalysts. However, practical challenges such as low selectivity catalytic degradation persist. In situ operando characterization techniques offer real-time insights into catalyst behavior under reaction conditions, enabling a deeper understanding of structure–performance relationships and, therefore, guiding the design optimization electro-catalysts. This review discusses common situ/operando techniques, highlights their applications model catalysts, single-atom single-crystal further explores combinational analysis to study complex nanocatalysts. Finally, we provide suggestions perspectives on development advance field electrochemical catalysis.

Language: Английский

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Joule heating synthesis for single-atomic Fe sites on porous carbon spheres and armchair-type edge defect engineering dominated oxygen reduction reaction performance

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: unknown, P. 124673 - 124673

Published: Oct. 1, 2024

Language: Английский

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Advancing Heterogeneous Organic Synthesis With Coordination Chemistry‐Empowered Single‐Atom Catalysts

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

Published: Sept. 18, 2024

Abstract For traditional metal complexes, intricate chemistry is required to acquire appropriate ligands for controlling the electron and steric hindrance of active centers. Comparatively, preparation single‐atom catalysts much easier with more straightforward effective accesses arrangement control The presence coordination atoms or neighboring functional on supports' surface ensures stability single‐atoms their interactions individual substantially regulate performance Therefore, collaborative interaction between surrounding environment enhances initiation reaction substrates formation transformation crucial intermediate compounds, which imparts significant catalytic efficacy, rendering them a valuable framework investigating correlation structure activity, as well mechanism in organic reactions. Herein, comprehensive overviews both homogeneous complexes reactions are provided. Additionally, reflective conjectures about advancement synthesis also proposed present reference later development.

Language: Английский

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Upcycling of Polyamide Wastes to Tertiary Amines Using Mo Single Atoms and Rh Nanoparticles

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 17, 2024

The pursuit of sustainable practices through the chemical recycling polyamide wastes holds significant potential, particularly in enabling recovery a range nitrogen-containing compounds. Herein, we report novel strategy to upcycle tertiary amines with assistance H

Language: Английский

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