Green synthesis and investigation of novel SiC/PZ-rGO nanoheterostructure as promising photocatalyst via empirical analysis

Abass, Olusegun K. and Abass, Gbemi F. and Lou, Yaoyin and Ajayi, Oluwasegun E. and Onyia, Wright J. and Bassey, Peace H. and Faloye, Oluwaseun T. and Bala, David Green synthesis and investigation of novel SiC/PZ-rGO nanoheterostructure as promising photocatalyst via empirical analysis. Current Research in Green and Sustainable Chemistry.

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Abstract

Nucleophilic substitution-based synthesis is gaining prominence as it imparts unique properties on hybrid organic–inorganic nanomaterials and is playing an increasingly important role in catalysis and solar energy conversion process. Herein, we report a novel, three-steps green synthesis of magnesio-thermically synthesized silicon carbide (SiC) nanoparticles nucleophilically grafted on piperazine-modified reduced graphene oxide (PZrGO) nanosheets. This method yielded 20–200 nm SiC nanoparticles decorated on several nano-thin layers of PZrGO nanosheets. Subsequently, the interfacial and optical properties of SiC/PZ-rGO nanoheterostructure (NHS) were investigated via electronic and structural characterization techniques. The SiC/PZ-rGO NHS exhibits a narrower band gap than its constituent components, with an energy gap of 3.10 eV, in contrast to the individual band gaps of 4.01 eV for SiC and 3.97 eV for PZ-rGO. The reconstruction of the Fermi level to 0.09 eV in the SiC/ PZ-rGO NHS indicates charge transfer and band bending at the interface, which is attributed to the formation of type-II (staggered) heterostructure following band alignment at the SiC/PZ-rGO interface. Moreover, for the two heterostructures (SiC and PZ-rGO), the electron transitions predominantly occur between the distinct compo­ nents, significantly enhancing the effective separation of photogenerated charge carriers. This study not only demonstrates that the SiC/PZ-rGO NHS is a promising photocatalyst but also provides valuable insights into the underlying mechanisms governing the photocatalytic behavior of SiC/PZ-rGO hybrid semiconductor nanomaterials.

Item Type: Article
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Medicine, Health and Life Sciences > School of Biological Sciences
Depositing User: Mr DIGITAL CONTENT CREATOR LMU
Date Deposited: 26 Jan 2026 14:31
Last Modified: 27 Jan 2026 11:33
URI: https://eprints.lmu.edu.ng/id/eprint/5680

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