Chlorine Induced In-Situ Growth of TiO2 Nanoparticles on PVC Nano Fibers

Abstract

PVC-TiO2-DBD nanocomposites were synthesized via combined approaches of electrospinning, H2 plasma treatment and hydrothermal reaction. The spinning solution composition and the amount of PVC were investigated and optimized in order to obtain membranes with uniform structure and high chemical activity. It was found that TiO2 NPs were distributed homogeneously on the surface of the PVC fibers. Chemical bonds such as Ti-Cl and C-O-Ti bonds were formed to tightly immobilize the TiO2 NPs on the PVC surface. The effect of H2 plasma treatment on the surface of the PVC membranes was studied. Meanwhile, using ABS and PS as substrates, the influence of various groups, including chlorine bonds, C=C double bonds, cyano and phenyl groups on the possible promotion mechanism of different chemical bonds for the TiO2 deposition was also studied. Possible mechanisms for the enhancement of the deposition of TiO2 were given.