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Synthesis and characterization of CuO@S-doped g-C(3)N(4) based nanocomposites for binder-free sensor applications

This study presents the simultaneous exfoliation and modification of heterostructured copper oxide incorporated sulfur doped graphitic carbon nitride (CuO@S-doped g-C(3)N(4)) nanocomposites (NCs) synthesized via chemical precipitation and pyrolysis techniques. The results revealed that the approach...

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Detalles Bibliográficos
Autores principales: Alebachew, Nigussie, Murthy, H. C. Ananda, Abdissa, Bedassa, Demissie, Taye B., von Eschwege, Karel G., Langner, Ernst H. G., Coetsee-Hugo, Liza
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9580512/
https://www.ncbi.nlm.nih.gov/pubmed/36321104
http://dx.doi.org/10.1039/d2ra04752g
Descripción
Sumario:This study presents the simultaneous exfoliation and modification of heterostructured copper oxide incorporated sulfur doped graphitic carbon nitride (CuO@S-doped g-C(3)N(4)) nanocomposites (NCs) synthesized via chemical precipitation and pyrolysis techniques. The results revealed that the approach is feasible and highly efficient in producing 2-dimensional CuO@S-doped g-C(3)N(4) NCs. The findings also showed a promising technique for enhancing the optical and electrical properties of bulk g-C(3)N(4) by combining CuO nanoparticles (NPs) with S-doped g-C(3)N(4). The crystallite and the average size of the NCs were validated using X-ray diffraction (XRD) studies. Incorporation of the cubical structured CuO on flower shaped S-doped-g-C(3)N(4) was visualized and characterized through XRD, HR-SEM/EDS/SED, FT-IR, BET, UV-Vis/DRS, PL, XPS and impedance spectroscopy. The agglomerated NCs had various pore sizes, shapes and nanosized crystals, while being photo-active in the UV-vis range. The synergistic effect of CuO and S-doped g-C(3)N(4) as co-modifiers greatly facilitates the electron transfer process between the electrolyte and the bare glassy carbon electrode. Specific surface areas of the NCs clearly revealed modification of bulk S-doped g-C(3)N(4) when CuO NPs are incorporated with S-doped g-C(3)N(4), providing a suitable environment for the binder-free decorated electrode with sensing behavior for hazardous pollutants. This was tested for the preparation of a 4-nitrophenol sensor.