Abstract:

In order to investigate the degradation efficiency of the dyes in the presence of Bi2WO6 coated polyester fabric, the polyester fabrics were treated by butyl acrylate, and then coated with the mixture of sodium dodecyl sulfate (SDS) and Bi2WO6 (denoted as SDS-Bi2WO6), and Bi2WO6, respectively. The surface morphology, crystal structure, particle size and chemical structure of the coated polyester fabrics were characterized by scanning electron microscopy, X-ray diffraction and fourier transform infrared spectroscopy. In addition, the water-repellent property and UV protection of SDS-Bi2WO6 and Bi2WO6 coated polyester fabrics were examined. The photocatalytic activity was evaluated by the degradation of methylene blue (MB) under ultraviolet light irradiation. The results show that the as-synthesis Bi2WO6 particles are orthorhombic phase and are uniformly coated on the surface of polyester fabric. Compared with the SDS-Bi2WO6 coated polyester fabric, the Bi2WO6 coated polyester fabric possesses the excellent UV protection and hydrophobicity properties. Bi2WO6 coated polyester fabric possesses the better photocatalytic activity than the SDS-Bi2WO6 coated polyester fabric. The degradation rate of methylene blue reaches 92% after UV illuminating for 7 h.

Key words: Bi2WO6, polyester fabric, photocatalytic, UV protection, hydrophobic