Synthesis of nanometer Bi2WO6 synthesized by sol–gel method and its visible-light photocatalytic activity for degradation of 4BS
Synthesis of nanometer Bi2WO6 synthesized by sol–gel method and its visible-light photocatalytic activity for degradation of 4BS
复制标题
DOI：
10.1016/j.jpcs.2009.12.041
复制
发表时间：
2010-04
影响因子：
4
通讯作者：
Gaoke Zhang;Fan Lu;Ming Li;Junling Yang;Xiaoyang Zhang;Baibiao Huang
中科院分区：
文献类型：
--
作者：
Gaoke Zhang;Fan Lu;Ming Li;Junling Yang;Xiaoyang Zhang;Baibiao Huang
在EDTA存在下，采用溶胶-凝胶法制备了具有可见光响应性的纳米bi2wo6催化剂。采用x射线衍射（XRD）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）、紫外-可见漫反射光谱、傅里叶变换红外光谱（FTIR）、布鲁诺尔-埃米特-泰勒（BET）等方法对制备的样品进行了表征。与固态反应得到的样品相比，制备样品的紫外-可见漫反射光谱显示出明显的蓝移。在可见光（λ>400nm）下制备的样品比固相反应合成的样品具有更高的光催化活性，且在450°C下制备的样品具有最高的光催化活性。
Nanometer Bi2WO6catalyst with visible-light responsive was prepared by a sol–gel method in the presence of EDTA. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV–vis diffuse reflectance spectrum, Fourier transform infrared (FTIR) spectrum, Brunauer–Emmet–Teller (BET). The UV–vis diffuse reflectance spectrum of the as-prepared sample shows a markedly blue-shift as compared to that of the sample obtained by a solid-state reaction. The as-prepared samples exhibited higher activities than that synthesized by the solid-state reaction for 4BS photodegradation under visible-light irradiation (λ>400nm) and the sample prepared at 450°C exhibited the highest photocatalytic activity.