Understanding the effect of saturated gases on catalytic performance of graphitic‐carbon nitride (g‐C<sub>3</sub>N<sub>4</sub>) for H<sub>2</sub>O<sub>2</sub> generation and dye degradation in the presence of ultrasound
Journal article
Karunakaran, A., Nguyen, H.P., Bowen, C.R., Marken, F., Narayan, B., Dunn, S., Zhang, Y., Jia, M., Zhao, Y., Nguyen, N.P., Le, B.T. and Pham, T.T. (2024). Understanding the effect of saturated gases on catalytic performance of graphitic‐carbon nitride (g‐C<sub>3</sub>N<sub>4</sub>) for H<sub>2</sub>O<sub>2</sub> generation and dye degradation in the presence of ultrasound. Advanced Engineering Materials. https://doi.org/10.1002/adem.202301958
| Authors | Karunakaran, A., Nguyen, H.P., Bowen, C.R., Marken, F., Narayan, B., Dunn, S., Zhang, Y., Jia, M., Zhao, Y., Nguyen, N.P., Le, B.T. and Pham, T.T. |
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| Abstract | This paper examines the effect of saturated gases on H2O2 generation and dye degradation using graphitic‐carbon nitride (g‐C3N4) as a piezoelectric catalyst. A detailed catalytic evaluation was carried out using a double‐bath sono‐reactor, where the performance of g‐C3N4 for H2O2 production and degradation of rhodamine B and indigo carmine dyes was evaluated for a range of catalyst dosage levels and saturated gases. Specific gases were selected to understand their role in the sonochemical production of reactive oxygen species (ROS) and reactive nitrogen species (RNS) and to elucidate the potential catalytic mechanism. The use of an Ar‐O2 gas mixture led to the highest yield for H2O2 production and dye degradation due to the positive effect of argon and oxygen in the generation of H2O2 and reactive oxygen species, respectively. The presence of nitrogen in both air and in an Ar‐air mixture increased H2O2 generation since reactive nitrogen species improved the conversion of •OH into H2O2. In contrast, air and Ar‐air negatively influenced the generation of ROS, which resulted in a low rate of dye degradation. This work provides new insights of the mechanisms of sonochemical and piezocatalytic processes in the use of graphitic‐carbon nitride in catalytic applications.This article is protected by copyright. All rights reserved. |
| Keywords | Condensed Matter Physics; General Materials Science |
| Year | 2024 |
| Journal | Advanced Engineering Materials |
| Publisher | Wiley |
| ISSN | 1438-1656 |
| 1527-2648 | |
| Digital Object Identifier (DOI) | https://doi.org/10.1002/adem.202301958 |
| Web address (URL) | https://onlinelibrary.wiley.com/journal/15272648 |
| Publication dates | |
| Online | 02 Apr 2024 |
| Publication process dates | |
| Accepted | 30 Mar 2024 |
| Deposited | 03 May 2024 |
| Publisher's version | License File Access Level Open |
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| Adv Eng Mater - 2024 - Karunakaran - Understanding the Effect of Saturated Gases on Catalytic Performance of Graphitic.pdf | ||
| License: CC BY 4.0 | ||
| File access level: Open | ||
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