Open Access
Molecules, volume 28, issue 6, pages 2469
Comparative Studies of g-C3N4 and C3N3S3 Organic Semiconductors—Synthesis, Properties, and Application in the Catalytic Oxygen Reduction
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Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
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Publication type: Journal Article
Publication date: 2023-03-08
Organic Chemistry
Drug Discovery
Physical and Theoretical Chemistry
Pharmaceutical Science
Molecular Medicine
Analytical Chemistry
Chemistry (miscellaneous)
Abstract
Exfoliated g-C3N4 is a well-known semiconductor utilized in heterogenous photocatalysis and water splitting. An improvement in light harvesting and separation of photogenerated charge carriers may be obtained by polymer doping with sulfur. In this work, we incorporate sulfur into the polymer chain by chemical polymerization of trithiocyanuric acid (C3N3S3H3) to obtain C3N3S3. The XRD measurements and TEM images indicated that C3N3S3, in contrast to g-C3N4, does not exist in the form of a graphitic structure and is not exfoliated into thin lamellas. However, both polymers have similar optical properties and positions of the conduction and valence bands. The comparative studies of electrochemical oxygen reduction and hydrogen evolution indicated that the overpotentials for the two processes were smaller for C3N3S3 than for g-C3N4. The RDE experiments in the oxygen-saturated solutions of 0.1 M NaOH have shown that O2 is electrochemically reduced via the serial pathway with two electrons involved in the first step. The spectroscopic experiments using NBT demonstrated that both polymers reveal high activity in the photocatalytic reduction of oxygen to superoxide anion radical by the photogenerated electrons.
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Citations by publishers
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Wierzyńska E. et al. Comparative Studies of g-C3N4 and C3N3S3 Organic Semiconductors—Synthesis, Properties, and Application in the Catalytic Oxygen Reduction // Molecules. 2023. Vol. 28. No. 6. p. 2469.
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Wierzyńska E., Pisarek M., Łęcki T., Skompska M. Comparative Studies of g-C3N4 and C3N3S3 Organic Semiconductors—Synthesis, Properties, and Application in the Catalytic Oxygen Reduction // Molecules. 2023. Vol. 28. No. 6. p. 2469.
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TY - JOUR
DO - 10.3390/molecules28062469
UR - https://doi.org/10.3390/molecules28062469
TI - Comparative Studies of g-C3N4 and C3N3S3 Organic Semiconductors—Synthesis, Properties, and Application in the Catalytic Oxygen Reduction
T2 - Molecules
AU - Wierzyńska, Ewelina
AU - Pisarek, Marcin
AU - Łęcki, Tomasz
AU - Skompska, Magdalena
PY - 2023
DA - 2023/03/08 00:00:00
PB - Multidisciplinary Digital Publishing Institute (MDPI)
SP - 2469
IS - 6
VL - 28
SN - 1420-3049
SN - 1420-3049
ER -
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@article{2023_Wierzyńska,
author = {Ewelina Wierzyńska and Marcin Pisarek and Tomasz Łęcki and Magdalena Skompska},
title = {Comparative Studies of g-C3N4 and C3N3S3 Organic Semiconductors—Synthesis, Properties, and Application in the Catalytic Oxygen Reduction},
journal = {Molecules},
year = {2023},
volume = {28},
publisher = {Multidisciplinary Digital Publishing Institute (MDPI)},
month = {mar},
url = {https://doi.org/10.3390/molecules28062469},
number = {6},
pages = {2469},
doi = {10.3390/molecules28062469}
}
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Wierzyńska, Ewelina, et al. “Comparative Studies of g-C3N4 and C3N3S3 Organic Semiconductors—Synthesis, Properties, and Application in the Catalytic Oxygen Reduction.” Molecules, vol. 28, no. 6, Mar. 2023, p. 2469. https://doi.org/10.3390/molecules28062469.
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