纤维素负载纳米Ag_2O复合材料对甲基橙降解性能研究

印染废水已经对环境构成严重威胁,传统吸附法对其降解性能有限,而电化学催化氧化法则需耗费许多电能,不符合当前节能环保要求,因此,无需耗能的光催化氧化在处理印染废水领域备受关注。纤维素具有较好的耐久性,价格低廉、有良好的生物降解性,是良好的载体。以纤维素负载Ag_2O/TiO_2纳米复合粒子制得具有光催化性能的净化薄膜,研究其对甲基橙的降解性能,结果发现中性环境有利于甲基橙的降解,负载型Ag_2O/TiO_2纳米复合粒子对甲基橙的降解性能均远优于Ag_2O和TiO_2各自对甲基橙的降解性能。

Study on the Degradation of Methyl Orange by Cellulose-loaded Nano-Ag_2O Composites

With dye wastewater posing a serious threat to the environment, the traditional methods according to adsorb-degradation have suffered great restriction, while the approach referring to electro-catalytic oxidation would cause massive electric energy consumption and could not meet the current requirements of energy conservation and environmental protection, It is thus the way, involving photo-catalytic oxidation and scarcely energy consumption, that has been concerned increasingly about dye wastewater treatment. Cellulose has been recognized as a category preeminent carrier, attributed to its merit of good durability, low price and good biodegradability and so on. Herein, purification membranes were prepared with cellulose employed to load Ag_2O/TiO_2 composited nanoparticles, subsequently, of which properties in photo-catalytic and degradation of methyl-orange were investigated. The results demonstrated that the performance of methyl-orange degradation appreciated neutral environment more, and of their membranes referring to supporting Ag_2O/TiO_2 composited nanoparticles was far better than that of Ag_2O and TiO_2 respectively.