science
Study Shows Mechanical Compaction of Melamine Improves Carbon Nitride for Dye Photodegradation
Researchers have found that mechanically compacting melamine alters the structure of graphitic carbon nitride, enhancing its photocatalytic performance. The method improves degradation of Acid Orange 7 under visible light. The findings were published in Scientific Reports on April 17, 2026.
Apr 16, 8:00 PM·1m read1 source
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Researchers in the Czech Republic have developed a method to enhance the photocatalytic properties of graphitic carbon nitride (g-C3N4) by mechanically compacting melamine before thermal polymerization. The study highlights how synthesis pathways influence the performance of this metal-free photocatalyst.
Changes The process involves compacting melamine powder under pressure, followed by thermal treatment to form g-C3N4.
This results in a more ordered structure with reduced defects, as confirmed by X-ray diffraction (XRD) and Fourier-transform infrared spectroscopy (FTIR) analyses. The authors noted that these changes increase the material's surface area and light absorption capabilities. The research team conducted experiments showing that the compacted version degraded AO7 more efficiently than standard g-C3N4.
Degradation rates were measured under controlled conditions, with the enhanced material achieving higher removal percentages in shorter times.
The improved photocatalyst has potential applications in water purification, particularly for removing organic pollutants like dyes from industrial wastewater.
The study references prior work on similar systems, such as combining g-C3N4 with iron(III) and persulfate for phenol degradation. NET 3 Call 2024 project. Additional support was provided by the Ministry of Education, Youth and Sports of the Czech Republic through the Large Research Infrastructure ENREGAT.
Details The article is open access, licensed under Creative Commons Attribution-NonCommercial-NoDerivatives 4.
0 International. 1038/s41598-026-48990-6.
