Fabrication of Na-W Co-Doped Exfoliated G-C3N4 Nanoparticles for Methylene Blue Removal

Journal of Advanced Materials and Processing

دوره 10، شماره 4، بهمن 2022، صفحه 3-11   

نوع مقاله: Research Paper

نویسندگان

Mohammad Javad Hakimi-Tehrani؛ Seyed Ali Hassanzadeh Tabrizi^* ؛ Narjes Koupaei؛ Ali Saffar؛ Mahdi Rafiei

Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran.

چکیده

Bulk g-C₃N₄ has very poor photocatalytic activity. Many methods have been utilized to increase the photocatalytic performance of this semiconductor. Here, a simple preparation was used to create exfoliated g-C₃N₄ that was co-doped with sodium and tungsten. The produced Na-W co-doped exfoliated g-C₃N₄ was characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), UV-vis spectroscopy, and Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS). The doping samples with Na and W changed the band structure of the g-C₃N₄ lattice, which increased light absorption and caused a reduction in the band gap. The samples had layered morphology. After exfoliation and sodium and tungsten co-doping of the samples, the methylene blue photodegradation was greatly enhanced. The doping of the samples also had an impact on the dye adsorption capacity. The dye removal activity of the Na-W co-doped exfoliated g-C₃N₄ sample is higher than those of pure bulk g-C₃N₄ and pure exfoliated g-C₃N₄. The rate reaction constant (k) of the Na-W co-doped exfoliated g-C₃N₄ is up to 3.3 times greater than that of bulk g-C₃N₄. The produced photocatalyst may be utilized for the treatment of wastewater comprising methylene blue as the pollutant agent.

کلیدواژه‌ها

Nanomaterials؛ Carbon nitride؛ Doping؛ Photocatalyst

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