TiO2@SiO2 混合支持被大音阶的第五音降水方法作为一个模板用 n-octylamine 准备。光催化剂锰酞毒 tetrasulfonic 酸(MnPcS ) 在支持上被使不能调动形成 MnPcS-TiO2@SiO2。X 光检查衍射(XRD ) 和紫外可见的弥漫的反射系列(紫外力的医生) 被采用描绘催化剂。玫瑰精 B (RhB ) 和在可见轻照耀下面的 o-phenylenediamine (OPDA ) 的催化氧化的 photocatalytic 降级被用作探查反应。矿化作用效率和降级机制用化学的氧需求(CODCr ) 被评估试金和电子旋转回声(ESR ) 分别地。RhB 被使不能调动的 MnPcS-TiO2@SiO2 高效地在可见轻照耀下面降级。在照耀和 64.02% CODCr 移动的 240 min 发生在照耀的 24 h 以后以后, RhB 的完全的 decolorization 发生了。ESR 结果显示氧化过程被氢氧根激进分子统治(d,在 2009 年 12 月在一冬季天测量了。这提供的 di?
A TiO2@SiO2 hybrid support was prepared by the sol-precipitation method using n-octylamine as a template. The photocatalyst manganese phthalocyanine tetrasulfonic acid (MnPcS) was immobilized on the support to form MnPcS-TiO2@SiO2. X-ray diffraction (XRD) and UV-Visible diffuse reflectance spectra (UV-Vis DRS) were employed to characterize the catalyst. The photocatalytic degradation of rhodamine B (RhB) and the catalytic oxidation of o-phenylenediamine (OPDA) under visible light irradiation were used as probe reactions. The mineralization efficiency and the degradation mechanism were evaluated using chemical oxygen demand (CODcr) assays and electron spin resonance (ESR), respectively. RhB was efficiently degraded by immobilized MnPcS-TiO2@SiO2 under visible light irradiation. Complete decolorization of RhB occurred after 240 min of irradiation and 64.02% CODcr removal occurred after 24 h of irradiation. ESR results indicated that the oxidation process was dominated by the hydroxyl radical (. OH) and superoxide radical (O2- ) generated in the system.