SiO_2-BiVO_4负载涤纶织物光催化性能的影响因素

通过浓碱对涤纶织物进行碱减量处理,再用低温浸渍法将SiO_2-Bi VO4粉体复合光催化剂负载在碱减量后的涤纶布表面,制备出涤纶负载SiO_2-Bi VO4光催化功能织物。考察染料初始浓度、盐浓度、p H值、表面活性剂浓度和H2O2浓度对涤纶负载SiO_2-Bi VO4光催化功能织物光催化效果影响,同时进行了粉体和涤纶负载布光催化性能的对比。

Polyethersulfone/hydroxyapatite composite membrane was prepared by using phase inversion meth-od for different pre-evaporation time, N,N-dimethylacetamide as solvent, polyvinylpyrrolidone as pore-forming a-gent, pure water as coagulation bath.The effects of pre-evaporation time on the structure and performance of composite membranes such as pure water flux, shrinkage rate, porosity, average pore size and BSA adsorption were studied.The results indicated that the morphology of finger-like pores of cross section of composite mem-branes changed from straight to oblique with prolonging pre-evaporation time, the pure water flux and average pore size increased gradually, the porosity decreased, and the shrinkage rate kept unchanged.The study of BSA adsorption property of composite membrane showed that BSA adsorption capacity decreased with prolonging pre-e-vaporation time.