Preparation and photo Fenton-like activities of high crystalline CuO fibers
CuO fibers were successfully fabricated by a simple electrospinning method, followed by calcination. Some experimental parameters such as the content of Cu(NO 3 ) 2 ∙3H 2 O, the content of PVP, the stirring time, the applied voltage, as well the calcination temperature were investigated, respectively, and their influences on the morphologies of fibers and the spinnability of precursor solution were analyzed. The CuO fibers calcined at 550 °C consisted of numerous CuO grains exhibited a well-crystalline structure. Furthermore, the CuO fibers demonstrated effective photo-Fenton degradation to methyl orange with the assist of H 2 O 2 and the adding volume of H 2 O 2 affects the degradation activities greatly. The degradation rate of methyl orange by the CuO fibers in the presence of 238.8 mmol/L H 2 O 2 is 3.8 times as much as one by P25 alone under the irradiation of Xe lamp. The degradation ratio of methyl orange could achieve 83% in 180 min. The enhanced photocatalytic activities of the CuO fibers were attributed to two aspects: one is the well-crystalline of CuO fibers; the other is that H 2 O 2 accepted the photogenerated electrons and holes effectively, which not only prevented the recombination of charge carriers but also produced additional OH. In this work, the formation and photocatalysis mechanisms of CuO fibers were also investigated.
危险品化学品经营许可证（带存储）