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

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(31)

Published: Feb. 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.

Language: Английский

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Versatile Photoelectrocatalysis Strategy Raising Up the Green Production of Hydrogen Peroxide

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(14)

Published: March 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.

Language: Английский

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Solvent Engineering of Oxygen‐Enriched Carbon Dots for Efficient Electrochemical Hydrogen Peroxide Production

Small, Journal Year: 2023, Volume and Issue: 19(43)

Published: June 27, 2023

The development of cost-effective and reliable metal-free carbon-based electrocatalysts has gained significant attention for electrochemical hydrogen peroxide (H2 O2 ) generation through a two-electron oxygen reduction reaction. In this study, scalable solvent engineering strategy is employed to fabricate oxygen-doped carbon dots (O-CDs) that exhibit excellent performance as electrocatalysts. By adjusting the ratio ethanol acetone solvents during synthesis, surface electronic structure resulting O-CDs can be systematically tuned. amount edge active CO group was strongly correlated with selectivity activity O-CDs. optimum O-CDs-3 exhibited extraordinary H2 up 96.55% (n = 2.06) at 0.65 V (vs RHE) achieved remarkably low Tafel plot 64.8 mV dec-1 . Furthermore, realistic productivity yield flow cell measured high 111.18 mg h-1 cm-2 duration 10 h. findings highlight potential universal approach enabling electrocatalytic materials improved performance. Further studies will undertaken explore practical implications advancing field electrocatalysis.

Language: Английский

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Clean Production of Hydrogen Peroxide: A Heterogeneous Solar‐Driven Redox Process

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(36)

Published: Aug. 6, 2023

Abstract Hydrogen peroxide is an essential chemical that attracting strong attention for energy and environmental applications. However, the struggle between growing market demand unsustainability of conventional anthraquinone method motivates exploration alternative H 2 O production processes. Although several new processes have been proposed, environmental‐friendly solar‐driven attracts most because only inputs water, oxygen, light energy. The rational design functional photo‐responsive catalysts promotes in photocatalytic photoelectrocatalytic approaches. These are, general, achieved by facilitating preferential adsorption key intermediates OOH*/OH*/O*, enhancing absorption, promoting charge separation, accelerating surface transfer with selective number involved charges. This review systematically summarizes strategies photo(electro)catalysts toward via both water oxidation oxygen reduction pathways. Though route perceived as more popular community, emerging a convincing alternative. Furthermore, prevailing hypotheses, state‐of‐the‐art catalysts, critical challenges, perspectives are discussed depth. aims to enhance comprehension this research field promote interest sustainable production.

Language: Английский

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Visual growth of nano-HOFs for low‐power memristive spiking neuromorphic system

Nano Energy, Journal Year: 2023, Volume and Issue: 109, P. 108274 - 108274

Published: Feb. 11, 2023

Language: Английский

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Recent Advances of Electrocatalyst and Cell Design for Hydrogen Peroxide Production

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: April 7, 2023

Abstract Electrochemical synthesis of H 2 O via a selective two-electron oxygen reduction reaction has emerged as an attractive alternative to the current energy-consuming anthraquinone process. Herein, progress on electrocatalysts for generation, including noble metal, transition metal-based, and carbon-based materials, is summarized. At first, design strategies employed obtain with high electroactivity selectivity are highlighted. Then, critical roles geometry electrodes type reactor in striking balance boost rate systematically discussed. After that, potential strategy combine complementary properties catalysts optimal overall yield illustrated. Finally, remaining challenges promising opportunities high-efficient electrochemical production highlighted future studies.

Language: Английский

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Covalent organic framework and hydrogen-bonded organic framework for solar-driven photocatalysis

Journal of Materials Chemistry A, Journal Year: 2023, Volume and Issue: 11(24), P. 12521 - 12538

Published: Jan. 1, 2023

The features of COF and HOF in porosity, light harvesting, structural multifunctionality enable their application for photocatalysis. Focusing on the existing merits, rational developing way is helpful constructing more excellent porous photocatalyst.

Language: Английский

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Cobalt Single‐Atom Electrocatalysts Enhanced by Hydrogen‐Bonded Organic Frameworks for Long‐Lasting Zinc‐Iodine Batteries

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(18)

Published: Jan. 11, 2024

Abstract Herein, a hydrogen‐bonded cobalt porphyrin framework is presented that can efficiently host iodine and serve as an electrocatalyst for aqueous zinc‐iodine (Zn‐I 2 ) organic batteries. The Fourier Transform infrared spectroscopy (FT‐IR), X‐ray Photoelectron Spectroscopy (XPS), Density functional theory (DFT) results demonstrate frameworks (HOFs) possess excellent adsorption properties species. In situ Raman illustrates the redox mechanism of Zn‐I battery depends on reaction I/I − , with I 3 /I 5 serving intermediary products. in Ultraviolet‐visible (UV–vis) further reveals HOFs restrict polyiodide solubilization. batteries @PFC‐72‐Co cathodes exhibit rate capability, achieving 134.9 mAh g −1 at 20 C. Additionally, these long‐term cycle stability, enduring > 5000 cycles impressive electrochemical performance be attributed to cooperative Co single‐atom (CoSA) HOF‐Co structure. Moreover, benzene ring structure carboxyl group strong ability adsorb iodide. Owing synergistic effects, cathode performance.

Language: Английский

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Selective oxygen reduction reaction: mechanism understanding, catalyst design and practical application

Chemical Science, Journal Year: 2024, Volume and Issue: 15(29), P. 11188 - 11228

Published: Jan. 1, 2024

The oxygen reduction reaction (ORR) is a key component for many clean energy technologies and other industrial processes. However, the low selectivity sluggish kinetics of ORR catalysts have hampered conversion efficiency real application these new mentioned before. Recently, tremendous efforts been made in mechanism understanding, electrocatalyst development system design. Here, comprehensive critical review provided to present recent advances field electrocatalytic ORR. two-electron four-electron transfer catalytic mechanisms evaluation parameters are discussed first. Then, up-to-date synthetic strategies

Language: Английский

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Advancing H₂O₂ electrosynthesis: enhancing electrochemical systems, unveiling emerging applications, and seizing opportunities

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(16), P. 8137 - 8181

Published: Jan. 1, 2024

Hydrogen peroxide (H

Language: Английский

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