Microenvironment Engineering of Single/Dual‐Atom Catalysts for Electrocatalytic Application

Advanced Materials, Год журнала: 2023, Номер 35(31)

Опубликована: Фев. 23, 2023

Single/dual-metal atoms supported on carbon matrix can be modulated by coordination structure and neighboring active sites. Precisely designing the geometric electronic uncovering structure-property relationships of single/dual-metal confront with grand challenges. Herein, this review summarizes latest progress in microenvironment engineering single/dual-atom sites via a comprehensive comparison single-atom catalyst (SACs) dual-atom catalysts (DACs) term design principles, modulation strategy, theoretical understanding structure-performance correlations. Subsequently, recent advances several typical electrocatalysis process are discussed to get general reaction mechanisms finely-tuned SACs DACs. Finally, full-scaled summaries challenges prospects given for This will provide new inspiration development atomically dispersed electrocatalytic application.

Язык: Английский

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The reformation of catalyst: From a trial-and-error synthesis to rational design

Nano Research, Год журнала: 2023, Номер 17(4), С. 3261 - 3301

Опубликована: Сен. 27, 2023

Язык: Английский

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Proximity Electronic Effect of Ni/Co Diatomic Sites for Synergistic Promotion of Electrocatalytic Oxygen Reduction and Hydrogen Evolution

Advanced Functional Materials, Год журнала: 2022, Номер 33(4)

Опубликована: Ноя. 13, 2022

Abstract The modulation effect manifests an encouraging potential to enhance the performance of single‐atom catalysts; however, in‐depth study about this for isolated diatomic sites (DASs) remains a great challenge. Herein, proximity electronic (PEE) Ni/Co DASs is proposed that anchored in N‐doped carbon (N‐C) substrate (NiCo DASs/N‐C) synergistic promoting electrocatalytic oxygen reduction reaction (ORR) and hydrogen evolution (HER). Benefiting from PEE adjacent Ni by four nitrogen (Ni‐N 4 ) moiety, NiCo DASs/N‐C catalyst exhibits superior ORR HER activity. In situ characterization results suggest Co (Co‐N as main active site O 2 adsorption‐activation process, which promotes formation key *OOH desorption *OH intermediate accelerate multielectron kinetics. Theoretical calculation reveals Ni‐N modulator can effectively adjust localization Co‐N site, *H adsorption on thereby boosting process significantly. This opens new opportunity rationally regulating catalytic centers well provides guidance designing high‐efficiency bifunctional electrocatalysts promising applications.

Язык: Английский

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Review of Carbon Support Coordination Environments for Single Metal Atom Electrocatalysts (SACS)

Advanced Materials, Год журнала: 2023, Номер 36(1)

Опубликована: Апрель 20, 2023

This topical review focuses on the distinct role of carbon support coordination environment single-atom catalysts (SACs) for electrocatalysis. The article begins with an overview atomic configurations in SACs, including a discussion advanced characterization techniques and simulation used understanding active sites. A summary key electrocatalysis applications is then provided. These processes are oxygen reduction reaction (ORR), evolution (OER), hydrogen (HER), nitrogen (NRR), dioxide (CO

Язык: Английский

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Atomically precise electrocatalysts for oxygen reduction reaction

Chem, Год журнала: 2023, Номер 9(2), С. 280 - 342

Опубликована: Фев. 1, 2023

Язык: Английский

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Versatile Photoelectrocatalysis Strategy Raising Up the Green Production of Hydrogen Peroxide

Advanced Energy Materials, Год журнала: 2023, Номер 13(14)

Опубликована: Март 1, 2023

Abstract H 2 O plays an irreplaceable role in many aspects of human society, such as paper bleaching, medical disinfection, wastewater treatment, organic synthesis, hydrometallurgy and the electronic industry. However, unsustainability current industrial production process traditional anthraquinone has a serious conflict with green sustainable development. The photo/electrocatalytic from renewable energy advantages being more economical, low‐carbon green, line requirements economy. These catalytic methods have played demonstrative development small molecules, contributing to fundamental understanding general catalysis providing scientific perspective for future new cycles. In this review, authors aim integrate reaction mechanism photocatalytic electrocatalytic production, summarize application recent years, assess modern technologies promoted research, including flux equipment coproduction, etc. This review intends provide clear logic profile directions calls researchers insights into field.

Язык: Английский

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Tuning the Coordination Environment of Carbon‐Based Single‐Atom Catalysts via Doping with Multiple Heteroatoms and Their Applications in Electrocatalysis

Advanced Materials, Год журнала: 2023, Номер 35(38)

Опубликована: Фев. 13, 2023

Abstract Carbon‐based single‐atom catalysts (SACs) are considered to be a perfect platform for studying the structure–activity relationship of different reactions due adjustability their coordination environment. Multi‐heteroatom doping has been demonstrated as an effective strategy tuning environment carbon‐based SACs and enhancing catalytic performance in electrochemical reactions. Herein, recently developed strategies multi‐heteroatom doping, focusing on regulation active sites by heteroatoms shells, summarized. In addition, correlation between activity investigated through representative experiments theoretical calculations various Finally, concerning certain shortcomings current multi‐heteroatoms, some suggestions put forward promote development field electrocatalysis.

Язык: Английский

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Bifunctional Single Atom Catalysts for Rechargeable Zinc–Air Batteries: From Dynamic Mechanism to Rational Design

Advanced Materials, Год журнала: 2023, Номер 35(35)

Опубликована: Июнь 7, 2023

Ever-growing demands for rechargeable zinc-air batteries (ZABs) call efficient bifunctional electrocatalysts. Among various electrocatalysts, single atom catalysts (SACs) have received increasing attention due to the merits of high utilization, structural tunability, and remarkable activity. Rational design SACs relies heavily on an in-depth understanding reaction mechanisms, especially dynamic evolution under electrochemical conditions. This requires a systematic study in mechanisms replace current trial error modes. Herein, fundamental oxygen reduction is first presented combining situ and/or operando characterizations theoretical calculations. By highlighting structure-performance relationships, rational regulation strategies are particularly proposed facilitate SACs. Furthermore, future perspectives challenges discussed. review provides thorough SACs, which expected pave avenue exploring optimum effective ZABs.

Язык: Английский

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Self-Tandem Electrocatalytic NO Reduction to NH₃ on a W Single-Atom Catalyst

Nano Letters, Год журнала: 2023, Номер 23(5), С. 1735 - 1742

Опубликована: Фев. 14, 2023

We design single-atom W confined in MoO3-x amorphous nanosheets (W1/MoO3-x) comprising W1-O5 motifs as a highly active and durable NORR catalyst. Theoretical operando spectroscopic investigations reveal the dual functions of to (1) facilitate activation protonation NO molecules (2) promote H2O dissociation while suppressing *H dimerization increase proton supply, eventually resulting self-tandem mechanism W1/MoO3-x greatly accelerate energetics NO-to-NH3 pathway. As result, exhibits highest NH3-Faradaic efficiency 91.2% NH3 yield rate 308.6 μmol h-1 cm-2, surpassing that most previously reported catalysts.

Язык: Английский

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Carbon-based catalyst supports for oxygen reduction in proton-exchange membrane fuel cells

Trends in Chemistry, Год журнала: 2022, Номер 4(10), С. 886 - 906

Опубликована: Авг. 26, 2022

Язык: Английский

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