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

Autor: Alebachew N; Department of Applied Chemistry, School of Applied Natural Sciences, Adama Science and Technology University P.O. Box 1888 Adama Ethiopia anandkps350@gmail.com., Murthy HCA; Department of Applied Chemistry, School of Applied Natural Sciences, Adama Science and Technology University P.O. Box 1888 Adama Ethiopia anandkps350@gmail.com.; Department of Prosthodontics, Saveetha Dental College & Hospital, Saveetha Institute of Medical and Technical Science (SIMAT), Saveetha University Chennai-600077 Tamil Nadu India., Abdissa B; Department of Applied Chemistry, School of Applied Natural Sciences, Adama Science and Technology University P.O. Box 1888 Adama Ethiopia anandkps350@gmail.com., Demissie TB; Department of Chemistry, University of Botswana Pbag UB 00704 Gaborone Botswana demissiet@ub.ac.bw., von Eschwege KG; Department of Chemistry, University of the Free State P.O Box 339 Bloemfontein South Africa., Langner EHG; Department of Chemistry, University of the Free State P.O Box 339 Bloemfontein South Africa., Coetsee-Hugo L; Department of Chemistry, University of the Free State P.O Box 339 Bloemfontein South Africa.
Jazyk: angličtina
Zdroj: RSC advances [RSC Adv] 2022 Oct 19; Vol. 12 (46), pp. 29959-29974. Date of Electronic Publication: 2022 Oct 19 (Print Publication: 2022).
DOI: 10.1039/d2ra04752g
Abstrakt: 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.
Competing Interests: The authors have no conflicts of interest to declare.
(This journal is © The Royal Society of Chemistry.)
Databáze: MEDLINE
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