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Triple S-scheme BiOBr@LaNiO3/CuBi2O4/Bi2WO6 heterojunction with plasmonic Bi-induced stability: deviation from quadruple S-scheme and mechanistic investigation

Mope E. MalefaneInstitute for Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa, Johannesburg, Florida, 1709, South AfricaJoyce Tsepiso KhutlaneSchool of Physical & Chemical Sciences, North-West University Potchefstroom, Potchefstroom, South AfricaMuthumuni ManagaInstitute for Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa, Johannesburg, Florida, 1709, South AfricaCornelia Gertina Catharina Elizabeth van SittertSchool of Physical & Chemical Sciences, North-West University Potchefstroom, Potchefstroom, South AfricaThabo T.I. NkambuleInstitute for Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa, Johannesburg, Florida, 1709, South AfricaAlex T. KuvaregaInstitute for Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa, Johannesburg, Florida, 1709, South Africa

2024en

ABI

Annotatsiya

Abstract The investigation and understanding of heterointerfaces formation and charge transfer dynamics in two or more semiconductor heterojunctions increased ensuing establishment of S-scheme and dual S-scheme heterojunctions. However, investigations of possible charge transfer at interfaces and their type in four component systems are limited. Herein, a four-component heterojunction was investigated to postulate and demonstrate deviation between quadruple and triple S-scheme heterojunctions possibilities using LaNiO 3 , BiOBr, CuBi 2 O 4 , and Bi 2 WO 6 . DFT and XPS were used to construct the band structure and support the charge transfer at the interfaces to follow S-S strategy during OTC and SMX degradation under visible light. IEF, bend bending systematically modulated charge transfer, and the core-shell strategy restricted possible junctions’ formation to three to accord triple S-scheme heterojunction. This work demonstrated the construction of Triple S-scheme heterostructures as a promising strategy for efficient charge separation making it a suitable candidate for elimination of pollutants.

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DOI: 10.1007/s42114-024-01014-1

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