Synthesis and characterization of natural zeolite supported Cr-doped TiO2 photocatalysts
Synthesis and characterization of natural zeolite supported Cr-doped TiO2 photocatalysts
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DOI：
10.1016/j.apsusc.2011.12.108
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发表时间：
2012-03
影响因子：
6.7
通讯作者：
Cheng Wang;Huisheng Shi;Yan Li
中科院分区：
文献类型：
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作者：
Cheng Wang;Huisheng Shi;Yan Li
为了提高TiO2的回收率和光催化效率，合成了天然沸石负载的掺cr TiO2光催化剂。采用x射线衍射（XRD）、布鲁诺尔-埃米特-泰勒（BET）表面积、傅里叶变换红外光谱（FT-IR）、扫描电镜（SEM）、x射线光电子能谱（XPS）、紫外-可见漫反射光谱（UV-vis DRS）和光致发光（PL）对材料进行了表征。通过对水溶液中甲基橙的降解来评价其光催化活性。结果表明，Cr浓度和煅烧温度对样品的微观结构和光催化活性有重要影响。在400℃下煅烧的10mol% cr掺杂的TiO2/沸石比其他样品具有更高的光催化活性。
Natural zeolite supported Cr-doped TiO2photocatalysts were synthesized for the sake of improving the recovery and photocatalytic efficiency of TiO2. The materials were characterized by X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET) surface areas, Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), ultraviolet-visible diffuse reflection spectroscopy (UV–vis DRS) and photoluminescence (PL). The photocatalytic activity was evaluated by the degradation of methyl orange in aqueous solution. The results show that the Cr concentration and the calcination temperature play important role on the microstructure and photocatalytic activity of the samples. The 10mol% Cr-doped TiO2/zeolite calcined at 400°C exhibits higher photocatalytic activity than that of the other samples.