Piezo-Photocatalytic Flowing Synthesis of Hydrogen Peroxide in Water Using a Piezoelectric Heterojunction

ACS Sustainable Chemistry & Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 13, 2025

Language: Английский

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UTILIZATION OF HYDROGEN PENTOXIDE AND HYDROGEN PEROXIDE IN TRANSPORTATION SECTOR: A COMPREHENSIVE ASSESSMENT STUDY

Computers & Chemical Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 109088 - 109088

Published: March 1, 2025

Language: Английский

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Nitrogen-rich carbon nitride activated peroxymonosulfate for the efficient photodegradation of 2, 4-dichlorophenol: Performance and mechanism insight

Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 121406 - 121406

Published: March 1, 2025

Language: Английский

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Molecularly Tunable Donor–Acceptor Integrated Carbon Nitride for Sunlight‐Driven H₂O₂ Synthesis: Mechanism and Performance Insights

Small, Journal Year: 2025, Volume and Issue: unknown

Published: March 16, 2025

Abstract Graphite phase carbon nitride (CN) emerges as a promising catalyst for sunlight‐driven H 2 O synthesis owing to its merits of stable physicochemical properties, distinctive electronic structure, adjustable bandgap, etc., yet poor charge behavior, especially high carrier recombination and low migration rate, limit photocatalytic activity. Herein, molecularly tunable donor‐acceptor (D‐A) integrated CN is fabricated via cytosine doping combined with molten salt‐assisted calcination. The utilized achieves the highest H₂O₂ yield 8.07 mmol g −1 h , which exceeds initial by factor 40.4, surpassing numerous reported CN‐based photocatalysts. Series characterizations/tests (e.g., transient absorption, steady‐state SPV spectra, KPFM) theoretical calculations HOMO/LUMO, adsorption energy) confirm that incorporation K + ‐C≡N pyrimidine ring disrupts symmetry establishes D‐A significantly augmenting separation photogenerated charges. capture experiment rotating disk electrode test affirm two‐step single electron oxygen reduction pathway occurs in process synthesis. This work offers novel approaches profound revelations development

Language: Английский

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Breakthroughs in Photocatalytic Hydrogen Peroxide Production Through Advanced Mechanisms and Catalytic Systems

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

Published: May 22, 2025

Abstract With the rapid development of clean energy, photocatalytic hydrogen peroxide (H₂O₂) production has emerged as a transformative strategy to decarbonize chemical industry, offering sustainable alternative fossil fuel‐dependent anthraquinone process. Nevertheless, in pathway H₂O₂ production, there are still series negative issues, such insufficient supply protons, difficulty separating electron–hole pair, and low utilization spatial reactive active sites. Therefore, is an urgent need for systematic review latest advancements further enhance production. In this review, three systems comprehensively discussed, oxygen reduction reaction (ORR) system with without sacrificial agents, water oxidation (WOR) accompanied by evolution reaction, dual coupling ORR WOR. By bridging molecular‐scale mechanistic insights system‐level innovation, not only explains fundamental mechanisms but also bridges lab‐scale breakthroughs industrial viability, positioning cornerstone green chemistry renewable energy storage, implications environmental remediation carbon‐neutral synthesis.

Language: Английский

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Dual-pathway photosynthesis H2O2 realized by carbon nitride with strong built-in electric field and awakened n-π* electron transition: Based on theoretical calculation guidance

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 164108 - 164108

Published: May 1, 2025

Language: Английский

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Enhancement of Photo‐ and Electrocatalytic H₂O₂ Production by the Reversible Catechol‐to‐o‐Benzoquinone Transformation in Polydopamine

ChemistrySelect, Journal Year: 2025, Volume and Issue: 10(20)

Published: May 1, 2025

Abstract H 2 O is an environmentally benign oxidant widely used in organic synthesis, wastewater treatment, disinfection, and the pulp paper industry. While industrial anthraquinone process enables large‐scale production of concentrated (30–70 wt%), it remains energy‐ capital‐intensive due to its multi‐step nature, involving hydrogenation, oxidation, separation, concentration, purification. Consequently, there increasing interest developing sustainable decentralized methods for producing dilute (0.1–20 wt%) directly from or . Light‐ electricity‐driven reduction and/or oxidation processes have emerged as promising strategies efficient cost‐effective generation. However, these approaches often suffer low selectivity competing side reactions. Recent studies suggest that reversible catechol‐to‐ o ‐benzoquinone transformation polydopamine (PDA) can enhance photo‐ electrocatalytic production. Despite potential, underlying mechanisms responsible this improvement remain poorly understood. A deeper investigation into redox thus crucial optimizing systems. This mini‐review highlights recent advances PDA‐based catalysts production, focusing on key factors improve selectivity. Building insights, we propose a generalized catalyst design strategy achieve high such

Language: Английский

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Interface Modification of Single Atom‐Nanocluster Synergistic Sites to Break the Activity‐Selectivity‐Stability Trade‐Off in Selective Hydrogenations

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

Published: May 29, 2025

Abstract Synergistic sites (M 1 +M n ) integrating single atoms and clusters exhibit tremendous promise for overcoming linear scaling relationships. However, metal entities spatial segregation within synergistic impedes the overall optimization structure‐property analysis, support interface of M critical intermediate adsorption‐transfer kinetics has yet unexplored. Here, first time, interfacial modification strategy is proposed to modulate electronic structure sites. This systematically altered that Pd +Pd from hydroxyapatite (HAP) nitrogen‐doped carbon‐modified HAP (NC/HAP) pure NC, with all maintaining comparable size content. In semi‐hydrogenation alkynes, volcano‐type correlations between varying interfaces hydrogenation activities are observed, peaking those supported on NC/HAP. The obtained @NC/HAP exhibits superior activity alkynol‐to‐enol conversion, achieving a formation rate up 3707.7 mol −1 h while 97.2% selectivity. Comprehensive investigations propose d‐band center different as descriptor elucidate correlation various selective reactions. Interfacial can optimize their structure, adeptly managing substrates adsorption–desorption kinetic H‐spillover segregated sites, thereby breaking − activity‐selectivity‐stability trade‐off.

Language: Английский

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Triphase Photocatalysis: Beyond Conventional Diphase Photocatalytic Reactions

Small, Journal Year: 2025, Volume and Issue: unknown

Published: June 4, 2025

Abstract Poor light absorption, recombination of photogenerated charges, low surface area, and insufficient catalytically active sites are the most studied conventional bottlenecks photocatalysis processes, which hinder efficiency photocatalytic materials. However, there other less factors such as solubility diffusion reactants in reaction system, also responsible for sluggish kinetics can alter selectivity. The diphase reactions at liquid–solid interface suffer from poor slow transport a medium. emerging triphase photocatalysis, occurs gas–liquid‐solid liquid–liquid–solid has shown potential addressing these less‐studied issues achieved better performance than reactions. This review article mainly focuses on understanding mechanism basic difference between along with requirements photocatalysis. Several examples including CO 2 reduction, N fixation, H O production, organic pollutant degradation discussed detail this review. Finally, summary future directions field provided to guide researchers design remarkable systems excellent efficiencies.

Language: Английский

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