微米级多孔金属氧化物的制备及应用研究

Study on Preparation and Application of Micrometer Porous Metal Oxide

针对制药废水难以生化降解的现状,通过氧化沉淀的方法制备了锰铁二元复合金属氧化物,并研究了其对水中难降解医药品(安替比林)的催化臭氧化性能。结果表明:该催化剂是由纳米片和颗粒组装而成的花状微米球,具有介孔结构,比表面积为309 m^2/g,从而能够提供较多的表面活性位并促进臭氧分解产生强氧化性自由基。该催化剂在较宽的pH范围内均有较好的催化臭氧化性能,可以有效矿化分解水中的安替比林。在投加量为0.1 g/L、污染物浓度为40 ppm时催化效率最佳。

Respect to the situation that pharmaceutical wastewater is difficult to biodegrade,ferromanganese binary complex metal oxide is prepared by oxidation precipitation method,and its performance of catalyzing and ozonizing refractory pharmaceuticals（ antipyrine） in water is studied. The results show that the catalyst is flower-shaped microspheres composed of nanosheets and granules. It has mesoporous structure,and specific surface area is 309 m^2/ g. Therefore,it is possible to provide more active sites and promote decomposition of ozone to generate strong oxidizing free radicals. This catalyst has good performance of catalytic ozonation over a wide pH range. It can effectively mineralize and decompose antipyrine in water.When the dosage is 0. 1 g / L and the density of pollutants is 40 ppm,the catalyst has the best catalytic efficiency.