在太阳光照射和不外加酸下TiO2双功能催化剂光催化还原Cr(VI)离子

利用硫酸氧钛铵的热分解控制制备了氮和硫共同掺杂的TiO₂双功能光催化剂. TiO₂双功能光催化剂同时具备光催化性能和较强的Br?nsted酸性,因此能够在太阳光照射和不外加酸下有效光催化还原Cr(VI)离子. 其光催化还原Cr(VI)离子的活性要优于通过外加硫酸调节到等同pH值和太阳光照射下P25光催化剂光催化还原Cr(VI)离子的活性.     

Nanocomposite materials based on poly(vinyl chloride) and bovine serum albumin modified ZnO through ultrasonic irradiation as a green technique: Optical,thermal, mechanical and morphological properties

In this project, physicochemical properties of poly(vinyl chloride) (PVC) reinforced by ZnO nanoparticles (NPs) were studied. Firstly, ZnO NPs were modified with bovine serum albumin (BSA) as an organo-modifier and biocompatible substance through ultrasound irradiation as environmental friendly, low cost and rapid means. Nanocomposite (NC) films were prepared by loadings of various ratios of ZnO/BSA NPs (3, 6 and 9 wt%) inside the PVC. Structural morphology and physical properties of the ZnO-BSA NPs and NC films were investigated via Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis (TGA), transmission electron microscopy and field emission scanning electron microscopy. According to the obtained information from the TGA, an increase in the thermal stability can be clearly observed. Also the results of contact angle analysis indicated with increasing percent of ZnO/BSA NPs into PVC the hydrophilic behaviors of NCs were increased.