Selective hydrogen peroxide conversion tailored by surface, interface, and device engineering

Joule, Journal Year: 2021, Volume and Issue: 5(6), P. 1432 - 1461

Published: May 21, 2021

Language: Английский

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Recent advances in electrocatalytic oxygen reduction for on-site hydrogen peroxide synthesis in acidic media

Journal of Energy Chemistry, Journal Year: 2021, Volume and Issue: 67, P. 432 - 450

Published: Oct. 28, 2021

Language: Английский

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Recent advances and trends of heterogeneous electro-Fenton process for wastewater treatment-review

Chinese Chemical Letters, Journal Year: 2021, Volume and Issue: 33(2), P. 653 - 662

Published: July 23, 2021

Language: Английский

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Theory-guided design of hydrogen-bonded cobaltoporphyrin frameworks for highly selective electrochemical H2O2 production in acid

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: May 17, 2022

The pursuit of selective two-electron oxygen reduction reaction to H

Language: Английский

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Strategies and challenges on selective electrochemical hydrogen peroxide production: Catalyst and reaction medium design

Chem Catalysis, Journal Year: 2022, Volume and Issue: 2(8), P. 1919 - 1960

Published: June 22, 2022

Language: Английский

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Photocatalytic and Electrocatalytic Generation of Hydrogen Peroxide: Principles, Catalyst Design and Performance

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

Published: March 28, 2023

Hydrogen peroxide (H2O2) is a high-demand organic chemical reagent and has been widely used in various modern industrial applications. Currently, the prominent method for preparation of H2O2 anthraquinone oxidation. Unfortunately, it not conducive to economic sustainable development since complex process involves unfriendly environment potential hazards. In this context, numerous approaches have developed synthesize H2O2. Among them, photo/electro-catalytic ones are considered as two most promising manners on-site synthesis These alternatives that only water or O2 required. Namely, oxidation (WOR) oxygen reduction (ORR) reactions can be further coupled with clean energy. For generation, design catalysts extremely important extensively conducted an aim obtain ultimate catalytic performance. This article overviews basic principles WOR ORR, followed by summary recent progresses achievements on performance photo/electro-catalysts generation. The related mechanisms these highlighted from theoretical experimental aspects. Scientific challenges opportunities engineering generation also outlined discussed.

Language: Английский

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Designing Oxide Catalysts for Oxygen Electrocatalysis: Insights from Mechanism to Application

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

Published: July 29, 2023

Abstract The electrochemical oxygen reduction reaction (ORR) and evolution (OER) are fundamental processes in a range of energy conversion devices such as fuel cells metal–air batteries. ORR OER both have significant activation barriers, which severely limit the overall performance that utilize ORR/OER. Meanwhile, is another very important involving has been widely investigated. occurs aqueous solutions via two pathways: direct 4-electron or 2-electron pathways from O 2 to water (H O) hydrogen peroxide ). Noble metal electrocatalysts often used catalyze ORR, despite fact noble certain intrinsic limitations, low storage. Thus, it urgent develop more active stable low-cost electrocatalysts, especially for severe environments (e.g., acidic media). Theoretically, an ideal electrocatalyst should provide adequate binding species. Transition metals not belonging platinum group metal-based oxides substance could give d orbital species binding. As result, transition regarded substitute typical precious electrocatalysts. However, development oxide catalysts reactions still faces challenges, e.g., catalytic activity, stability, cost, mechanism. We discuss principles underlying design catalysts, including influence crystal structure, electronic structure on their performance. also challenges associated with developing potential strategies overcome these challenges.

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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Oxygen reduction reaction on Pt-based electrocatalysts: Four-electron vs. two-electron pathway

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Journal Year: 2022, Volume and Issue: 43(6), P. 1433 - 1443

Published: April 14, 2022

Oxygen reduction reaction (ORR) has attracted extensive attention as an important component for sustainable energy storage and conversion technologies. However, the sluggish kinetics hampered practical application. Pt-based nanomaterials have triggered much interest most promising electrocatalyst to facilitate of ORR. Nonetheless, a major challenge electrocatalysts is precisely control selectivity pathways possible products (H2O or H2O2) with reduced loading amount precious Pt. This review systematically summarizes strategies regulate ORR performances by accommodating adsorption spatial structure. Further discussion implemented about key factors accelerate 4e-ORR 2e-ORR pathways. Finally, we demonstrate challenges perspectives further development novel electrocatalysts.

Language: Английский

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Promising Materials for Photocatalysis‐Self‐Fenton System: Properties, Modifications, and Applications

Small Structures, Journal Year: 2023, Volume and Issue: 4(7)

Published: Feb. 15, 2023

Photocatalysis‐self‐Fenton system (PSFs), which integrates photocatalysis with Fenton technology, is investigated thoroughly in wastewater treatment due to the virtues of no addition H 2 O and accelerated circulation Fe 2+ /Fe 3+ . Several kinds materials that mainly include metal‐free graphite carbon nitride (g‐C 3 N 4 ), metal oxides (Fe sulfide (CdS, FeS ) have demonstrated extensive development potential. Nevertheless, most developed catalysts are unable satisfy requirements PSFs. Therefore, a comprehensive review committed modification methods PSFs put forward. First, concrete mechanism from two aspects reaction discussed. Second, properties, modifications (morphology modulation, heterojunction construction as well doping), applications (contaminants degradation disinfection) promising emphasized. Finally, novel directions for future research looked forward to. This opens up new horizon enhancing practical application future.

Language: Английский

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