Unveiling morphology altered photoactivity of microspherical carbon nitride scaffolds
Source abstract
Abstract
Abstract Rapid charge-carrier recombination and low surface area barriers of bulk graphitic carbon nitride (g-C3N4) photocatalyst are mitigated by morphological alteration approach. To expose excess active surface area, and enhance the lifetime of photo-excitons, two-dimensional g-C3N4 sheets are moulded into three-dimensional microspherical assemblies via solvothermal assisted synthesis. Furthermore, urea coating of g-C3N4 microspheres followed by thermal polycondensation generated uniform surface pores and exposed large surface-active sites. Compared to bulk g-C3N4, and spherical g-C3N4, the morphology tuned porous g-C3N4 microspheres exhibited significantly higher photoactivity in dye degradation, and N2 photo-fixation reaction. The advancement in photoactivity of porous g-C3N4 microspherical photocatalysts is ascribed to multiple surface-active sites and improved photoexcited electron lifetime. The structure-property relationship of catalyst, and a possible mechanism for enhanced photoactivity are discussed in detail. The present work may set the foundation to emphasize and understand the morphology dependent photophysical properties.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Ga2O3 and related materials · Perovskite Materials and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (48)
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