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- W3135720376 endingPage "100040" @default.
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- W3135720376 abstract "Lignin is a valuable bio-resource in the manufacturing of carbon-based functional materials, because of its large carbon content (~60%), various phenolic structural units, abundancy and sustainability. Here, we explored its use in photocatalytic and self-propelling applications. First, hydroxyl-abundant lignin-based carbon precursor particles, HCLSs, were produced by hydrothermal carbonization of lignin-based microcapsules (LCs). Then, by heating urea coated HCLSs, carbon spheres with a layer of graphitic carbon nitride (g-C3N4) were produced. The presence of surface available -OH groups on the HCLSs, were critical in the formation mechanism. Under visible-light irradiation, the photocatalytic spheres exhibited enhanced activity (49% of the model pollutant remained after 60 min, at 100 mW cm−2) and possessed a three times higher average removal rate constant compared to that of g-C3N4 powder. The g-C3N4 powder was obtained when heating urea only. Additionally, by introducing a Pt/Pd coating on only one side of the composite spheres, the spheres were made self-propelling in the presence of a fuel (H2O2). This work provides new insights into the preparation principles of lignin-based photocatalytic spheres for effective solar photocatalysis applications." @default.
- W3135720376 created "2021-03-15" @default.
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- W3135720376 date "2021-04-01" @default.
- W3135720376 modified "2023-10-16" @default.
- W3135720376 title "Self-assembled carbon spheres prepared from abundant lignin and urea for photocatalytic and self-propelling applications" @default.
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- W3135720376 doi "https://doi.org/10.1016/j.cartre.2021.100040" @default.
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