In order to improve the self-cleaning performance of clothing fabrics under sunlight, nitrogen-doped carbon quantum dots ( N-CQDs) were prepared from citric acid and urea, and the composite photocatalytic textiles were created through hydrothermal treatment of viscose fabrics loaded with nitrogen-doped carbon quantum dots and nano titanium dioxide. The viscose fabrics were characterized by means of scanning electron microscope, infrared spectrometer, and ultraviolet-visible photometer, and heir optical absorption, photocatalytic degradation and stability were tested. The synergistic mechanism of degradation of Rhodamine B ( RhB) by N-CQDs, TiO2 and their composite systems were studied. The results show that the decolorization rate of fabric loaded with N-CQDs/TiO2 is 76. 5%, which is 49. 1% higher than that of fabric loaded with TiO2 , and the decolorization rate can still reach 62. 34% after 6 cycles of photocatalytic degradation of RhB.
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