The microstructures of the as prepared

2b with high magnification, the MWNTs were visible and they were interlaced between the Bi2WO6 nanosheets. The good attachment of MWNTs with the microspheres would favor the separation of photogenerated hole–electron pairs due to the excellent mobility of charge carriers on the MWNTs surface [19]. On the other hand, MWNTs could provide more active sites for TC adsorption, which improved the contact of TC with Bi2WO6 and then degradation efficiency [11].