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UV protection from cotton fabrics finished with boron and nitrogen co-doped carbon dots

Zuo, Danying, Liang, Na, Xu, Jing, Chen, Dongzhi, Zhang, Hongwei
Cellulose 2019 v.26 no.6 pp. 4205-4212
Fourier transform infrared spectroscopy, boron, carbon quantum dots, cellulose, clothing, cotton, cotton fabric, durability, fluorescence, hydrothermal carbonization, laundry, nitrogen, polyvinyl alcohol, scanning electron microscopes, transmission electron microscopes, transmittance, ultraviolet-visible spectroscopy
Ultraviolet (UV)-protective cotton fabrics are necessary for outdoor cotton clothing. In this study, boron and nitrogen co-doped carbon dots (BN-CD) are synthesized by one-pot hydrothermal carbonization, and consequently served as UV-absorber for cotton textiles. Fourier transform infrared, transmission electron microscope, scanning electron microscope and UV–Vis spectroscopy are used to characterize the structure and properties of BN-CDs and cotton fabrics finished by BN-CDs. The UV protection property and laundering durability of treated cotton fabrics are also measured. The results show that as-prepared BN-CD has high fluorescence and down-conversion fluorescence emission. The cotton fabric finished by the BN-CD and poly(vinyl alcohol) exhibits a UV transmittance of less than 4% in the range of 280–400 nm, a UV protection factor value of up to 38.6 and good laundering durability, indicating a promising potential of BN-CD as UV absorbers for finishing cotton fabrics.