Highly crystalline poly(heptazine imides) by mechanochemical synthesis for photooxidation of various organic substrates using an intriguing electron acceptor – Elemental sulfur

Savateev, Aleksandr; Dontsova, Dariya; Kurpil, Bogdan; Antonietti, Markus

doi:10.1016/j.jcat.2017.02.029

Cited by 72 publications

(78 citation statements)

References 43 publications

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“…S2a †). 20,21 The valence band maximum (VBM) in K-PHI determined by ultraviolet photoelectron spectroscopy (UPS) is located at $2.5 V ( Fig. S2e †).…”

Section: Resultsmentioning

confidence: 99%

Green radicals of potassium poly(heptazine imide) using light and benzylamine

et al. 2019

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“…S2a †). 20,21 The valence band maximum (VBM) in K-PHI determined by ultraviolet photoelectron spectroscopy (UPS) is located at $2.5 V ( Fig. S2e †).…”

Section: Resultsmentioning

confidence: 99%

Green radicals of potassium poly(heptazine imide) using light and benzylamine

et al. 2019

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“…The O 2 ‐based approach quite often suffers from low selectivity due to overoxidation of the aldehyde to the carboxylic acid . The selectivity of the process can thereby be significantly enhanced by replacing O 2 with elemental sulfur (S 8 ) (Scheme ) …”

Section: Application Of Ionic Carbon Nitrides In Photocatalysismentioning

confidence: 99%

“…Photo‐Hantzsch synthesis of pyridines has been developed using K‐PHI (Scheme ) . Herein, instead of handling the aliphatic aldehyde under air free conditions, it is produced right before consumption from the respective alcohol in a first step.…”

Section: Application Of Ionic Carbon Nitrides In Photocatalysismentioning

confidence: 99%

Ionic Carbon Nitrides in Solar Hydrogen Production and Organic Synthesis: Exciting Chemistry and Economic Advantages

Savateev

Antonietti

2019

ChemCatChem

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Molecular photoredox complexes from the platinum group paved the way of organic photocatalysis. However, high price and difficulties related to removal and recycling hamper application of such complexes on the larger scale. Carbon nitride semiconductor photocatalysts are deprived at large extent of such limitations. Herein, we summarize application of ionic carbon nitrides in photocatalysis. A salt-like structure of ionic carbon nitrides comprising negatively charged poly (heptazine imide) anion and positively charged alkali metal cations gives rise to a number of unique properties and high activity in photocatalysis. The performance of ionic carbon nitrides in H 2 generation is up to 100 times higher compared with the covalent graphitic carbon nitrides. Eleven photocatalytic reactions mediated by ionic carbon nitrides and their long-lived radicals are reviewed. Economy of using carbon nitride photocatalysts in comparison with the photoredox complexes from the platinum group has been analyzed.

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“…Due to this structural peculiarity, the valence band position becomes significantly more positive (+2.6 eV vs. RHE) ( Figure 1). K-PHI is highly effective for different photooxidation processes such as oxygen evolution reaction [18], oxidation of alcohols followed by Hantzsch pyridine synthesis [19].…”

Section: Introductionmentioning

confidence: 99%