Computational insight into the mechanism of O2 to H2O2 reduction on amino-groups-containing g-C3N4

Goclon, Jakub; Winkler, Krzysztof

doi:10.1016/j.apsusc.2018.08.070

Cited by 29 publications

(18 citation statements)

References 46 publications

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“…[52] Some studies have clearly demonstrated the advantages of introducing defects in g-C 3 N 4 photocatalysts for the increased production of H 2 O 2 . [53] Fore xample,L ia nd co-workers [54] reported the creation of carbon vacancies in g-C 3 N 4 by thermal annealing in an oxygen-deficient environment (Ar flow). As shown in Figure 9a,t he formation of carbon vacancies in g-C 3 N 4 (Cv-g-C 3 N 4 )w as accompanied by the appearance of amino groups.…”

Section: Defect Controlmentioning

confidence: 99%

“…The defects in/on g‐C 3 N 4 photocatalysts are often formed by introducing nitrogen and carbon vacancies, which also alter the optical and electronic properties . Some studies have clearly demonstrated the advantages of introducing defects in g‐C 3 N 4 photocatalysts for the increased production of H 2 O 2 …”

Section: Advanced Photocatalysts For the Production Of H2o2mentioning

confidence: 99%

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Production of Hydrogen Peroxide by Photocatalytic Processes

2020

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Hydrogen peroxide (H2O2) has received increasing attention because it is not only a mild and environmentally friendly oxidant for organic synthesis and environmental remediation but also a promising new liquid fuel. The production of H2O2 by photocatalysis is a sustainable process, since it uses water and oxygen as the source materials and solar light as the energy. Encouraging processes have been developed in the last decade for the photocatalytic production of H2O2. In this Review we summarize research progress in the development of processes for the photocatalytic production of H2O2. After a brief introduction emphasizing the superiorities of the photocatalytic generation of H2O2, the basic principles of establishing an efficient photocatalytic system for generating H2O2 are discussed, highlighting the advanced photocatalysts used. This Review is concluded by a brief summary and outlook for future advances in this emerging research field.

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Section: Defect Controlmentioning

confidence: 99%

Section: Advanced Photocatalysts For the Production Of H2o2mentioning

confidence: 99%

Production of Hydrogen Peroxide by Photocatalytic Processes

2020

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“…The calculation results demonstrated that the energy barrier for O 2 adsorption for the amino-groupscontaining PCN system was obviously lower than that for the PCN system. [55] The XPS and TPD-MS results confirmed that the amino content within PCN gradually decreased with the increase of the polymerization temperature. Therefore, based on the experimental analysis and theory calculation, we can conclude that amino groups within the PCN surface are probably beneficial to the adsorption of O 2 .…”

Section: Evaluation Of the Catalytic Performancementioning

confidence: 74%

Two‐photon Absorption in a Defect‐engineered Carbon Nitride Polymer Drives Red‐light Photocatalysis

et al. 2020

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Exploiting photocatalysts that harvest the solar spectrum as broadly as possible remains a high‐priority target, but is a grand challenge. Herein, for the first time, we found that bulky polymer carbon nitride (denoted as PCN) possessed excellent two‐photon absorption behavior and confirmed that the bulky PCN can efficiently drive red‐light photocatalysis by two‐photon absorption processes. Long‐wavelength‐excited fluorescence measurements and confocal laser scanning microscopy clearly revealed the existence of two‐photon absorption in PCN. Moreover, we created nitrogen vacancies on the PCN surface by increasing the polymerization temperature and confirmed the nitrogen vacancies can efficiency accelerate charge separation. As a result, bulky PCN with nitrogen vacancies showed unexpected pollutant degradation and water splitting activity under 660 nm. Additionally, PCN obtained from other precursors also exhibited competent red‐light photocatalytic performance. This work represents an important step toward developing two‐photon‐absorption PCN photocatalysts for wide solar‐spectrum utilization.

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“…Defekte in und auf g‐C 3 N 4 ‐Photokatalysatoren werden oft durch Einführung von Stickstoff‐ oder Kohlenstoff‐Fehlstellen erzeugt und beeinflussen die optischen und elektronischen Eigenschaften des Materials . Die Vorteile eingeführter Defekte in g‐C 3 N 4 ‐Photokatalysatoren für die Vermittlung der H 2 O 2 ‐Produktion konnten in mehreren Arbeiten klar beleget werden …”

Section: Photokatalysatoren Für Die Produktion Von H2o2unclassified

Produktion von Wasserstoffperoxid durch photokatalytische Prozesse

2020

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Wasserstoffperoxid (H2O2) steht verstärkt im Fokus der Forschung, da es nicht nur ein mildes und umweltschonendes Oxidationsmittel für die organische Synthese und Umweltsanierung ist, sondern auch ein aussichtsreicher flüssiger Brennstoff. Die Herstellung von H2O2 mittels Photokatalyse ist ein nachhaltiger Prozess, da dabei Wasser und Sauerstoff als Ausgangsmaterialien und Sonnenlicht als Energiequelle genutzt werden. In den letzten zehn Jahren wurden ermutigende Fortschritte in der Entwicklung von Prozessen zur photokatalytischen H2O2‐Produktion erzielt. In diesem Aufsatz bieten wir eine umfassende Zusammenfassung der Fortschritte auf dem Gebiet der photokatalytischen Produktion von H2O2. Nach einer kurzen Einleitung, in der die Vorteile der photokatalytischen H2O2‐Synthese herausgestellt werden, diskutieren wir die grundlegenden Prinzipien der Entwicklung effizienter photokatalytischer Systeme zur Produktion von H2O2 und stellen moderne Photokatalysatoren vor. Wir schließen den Aufsatz mit einer kurzen Zusammenfassung und einem Ausblick über die Fortschritte in diesem wachsenden Forschungsgebiet ab.

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Computational insight into the mechanism of O2 to H2O2 reduction on amino-groups-containing g-C3N4

Cited by 29 publications

References 46 publications

Production of Hydrogen Peroxide by Photocatalytic Processes

Production of Hydrogen Peroxide by Photocatalytic Processes

Two‐photon Absorption in a Defect‐engineered Carbon Nitride Polymer Drives Red‐light Photocatalysis

Produktion von Wasserstoffperoxid durch photokatalytische Prozesse

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