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Construction of magnetic core-ring-structured porous hexagonal NiCo2O4 nanoplates/carbon fibers hybrid with enhanced visible-light photocatalytic performance
- Zhang, Danfeng, Zhang, Lei, Zhang, Guozhen, Liu, Tong
- Journal of materials science 2019 v.54 no.10 pp. 7617-7627
- adsorption, carbon fibers, magnetism, mass transfer, photocatalysis, pollutants, remediation
- Eco-friendly magnetic core-ring-structured porous hexagonal NiCo₂O₄ nanoplates combined with carbon fibers (CPH-NiCo₂O₄/CFs) were successfully constructed by using hydrothermal-calcination technique. Notably, CPH-NiCo₂O₄/CFs exhibited high utilization of visible light, good mass transfer property and adsorption ability for pollutants, which were because of the unique core-ring hexagonal nanoplates’ morphology and introduction of CFs. Furthermore, the formation of CPH-NiCo₂O₄/CFs heterojunction was benefited to the efficient separation of photogenerated charges, improving the photocatalytic properties. The hybrid with good stability and magnetic recyclability exhibited satisfactory efficiency in photocatalytic degradation pollutants under visible light (λ > 420 nm). The possible mechanism for improved photocatalytic degradation was elucidated in detail. This work provided a promising way to exploit inexpensive, high-performance, visible-light-driven photocatalytic materials for remediation of environmental organic contaminants.