Sustained production of H2O2 in alkaline water solution using borate and phosphate-modified Au/TiC2 photocatalysts

Xiong, Xianqiang; Zhang, Xiao; Liu, Shengwei; Zhao, Jianjun; Xu, Yiming

doi:10.1039/c8pp00177d

Cited by 31 publications

(17 citation statements)

References 30 publications

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“…This may allow efficient e À /h + separation while promoting smooth e À transfer from TiO 2 to the alloy.I na ddition, the electron density of the Au atoms increased because Au is more electronegative than Ag, which promoted the efficient two-electron reduction of O 2 for the production of H 2 O 2 .Moreover,the steady production of H 2 O 2 could also be achieved by employing some anions in the reaction liquid. In arecent study,Xiong et al [25] reported the sustained production of H 2 O 2 by using aT iO 2 photocatalyst loaded with Au particles by adding borate or phosphate anions into the air-saturated methanol/water solution. The amount of H 2 O 2 generated by the Au/TiO 2 /phosphate photocatalyst reached 1.06 mm after 3hours of photoirradiation (l > 320 nm), which was higher than the amounts achieved with Au/TiO 2 /borate (0.91 mm)a nd Au/TiO 2 (0.73 mm).…”

Section: Loading With Noble Metal Nanoparticles and Further Modificationmentioning

confidence: 99%

“…Moreover, the steady production of H 2 O 2 could also be achieved by employing some anions in the reaction liquid. In a recent study, Xiong et al . reported the sustained production of H 2 O 2 by using a TiO 2 photocatalyst loaded with Au particles by adding borate or phosphate anions into the air‐saturated methanol/water solution.…”

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: Loading With Noble Metal Nanoparticles and Further Modificationmentioning

confidence: 99%

Section: Advanced Photocatalysts For the Production Of H2o2mentioning

confidence: 99%

Production of Hydrogen Peroxide by Photocatalytic Processes

2020

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“…[47] With the deposition of Ag 3 Au, Ag 2 Au 2 , and AgAu 3 nanoclusters, the bandgap of TiO 2 decreased from 3.0 to 1.00, 1.24, and 1. 40 [69,73] however, Pt/TiO 2 could alternatively photogenerate H 2 O 2 via the 2e − WOR route. For example, Daskalaki et al reported H 2 O 2 generation on Pt/TiO 2 photocatalysts via both the 2e − ORR and 2e − WOR pathways.…”

Section: Deposition Of Metal Nanoparticlesmentioning

confidence: 99%

“…For example, Teranishi et al applied ) for surface complexation on pristine TiO 2 and TiO 2 modified with reduced graphene oxide (rGO/ TiO 2 ) considering its lower toxicity than F − . [80] The authors further added Co 2+ into the suspension of PO [73] The authors proposed that borate and phosphate could mediate hole transfer to facilitate charge transfer and separation, which was evidenced by the higher [72] Copyright 2012, American Chemical Society.…”

Section: Surface Complexationmentioning

confidence: 99%

Inorganic Metal‐Oxide Photocatalyst for H₂O₂ Production

Wang

Zhang

et al. 2021

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Hydrogen peroxide (H 2 O 2 ) is a mild but versatile oxidizing agent with extensive applications in bleaching, wastewater purification, medical treatment, and chemical synthesis. The state-of-art H 2 O 2 production via anthraquinone oxidation is hardly considered a cost-efficient and environment-friendly process because it requires high energy input and generates hazardous organic wastes. Photocatalytic H 2 O 2 production is a green, sustainable, and inexpensive process which only needs water and gaseous dioxygen as the raw materials and sunlight as the power source. Inorganic metal oxide semiconductors are good candidates for photocatalytic H 2 O 2 production due to their abundance in nature, biocompatibility, exceptional stability, and low cost. Progress has been made to enhance the photocatalytic activity toward H 2 O 2 production, however, H 2 O 2 photosynthesis is still in the laboratory research phase since the productivity is far from satisfaction. To inspire innovative ideas for boosting the H 2 O 2 yield in photocatalysis, the most well-studied metal oxide photocatalysts are selected and the modification strategies to improve their activity are listed. The mechanisms for H 2 O 2 production over modified photocatalysts are discussed to highlight the facilitating role of the modification methods. Besides, methods for the quantification of H 2 O 2 and associated radical intermediates are provided to guide future studies in this field.

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“…Darüber hinaus konnte die stetige Produktion von H 2 O 2 auch durch Einsatz von Anionen in der flüssigen Reaktionsmischung erreicht werden. In einer aktuellen Arbeit berichten Xiong et al . von der kontinuierlichen Produktion von H 2 O 2 an einem mit Au‐Partikeln beladenen TiO 2 ‐Photokatalysator durch Zugabe von Borat‐ und Phosphatanionen zu einer luftgesättigten Methanol‐Wasser‐Lösung.…”

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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Sustained production of H2O2 in alkaline water solution using borate and phosphate-modified Au/TiC2 photocatalysts

Cited by 31 publications

References 30 publications

Production of Hydrogen Peroxide by Photocatalytic Processes

Production of Hydrogen Peroxide by Photocatalytic Processes

Inorganic Metal‐Oxide Photocatalyst for H₂O₂ Production

Produktion von Wasserstoffperoxid durch photokatalytische Prozesse

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Sustained production of H2O2 in alkaline water solution using borate and phosphate-modified Au/TiC2 photocatalysts

Cited by 31 publications

References 30 publications

Production of Hydrogen Peroxide by Photocatalytic Processes

Production of Hydrogen Peroxide by Photocatalytic Processes

Inorganic Metal‐Oxide Photocatalyst for H2O2 Production

Produktion von Wasserstoffperoxid durch photokatalytische Prozesse

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Product

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Inorganic Metal‐Oxide Photocatalyst for H₂O₂ Production