TiO_2/CaSiO_3复合型光催化剂的制备及其性能研究

Fabrication of CaSiO_3-stabilized TiO_2 Composites and Their Photocatalytic Properties

采用碱浸粉煤灰获得硅酸钠水溶液,进一步通过化学沉淀反应得到多孔硅酸钙材料,通过SEM和XRD测试结果表明所得产品为多孔蜂窝状的无定形态材料。通过物理吸附过程获得一系列不同负载量的Ti O_2/CaSiO_3复合催化剂。在紫外光条件下光催化降解甲基橙考察催化性能,实验结果表明8wt%Ti O_2/Ca SiO_3样品具有最佳的催化活性。

Fly ash was used to extract sodium silicate solution and then obtained microcellular structure calcium metasilicate material via chemical reaction. A range of calcium metasilicate- silver promoted- anatase（ Ti O2- Ca Si O3）photocatalysts was obtained physisorption methods. The photocatalytic results showed that the 8wt% Ti O2/ Ca Si O3 products had higher activity during the reaction.