并流沉淀法合成Fe掺杂ZnO及其光催化脱氮性能

发布时间：2018-05-15 06:50

本文选题：Fe掺杂ZnO + 合成　；参考：《化工学报》2017年01期

【摘要】：以Zn(NO_3)_2·6H_2O与NH_3·H_2O为原料,采用并流沉淀法合成了Fe掺杂ZnO,通过X射线衍射(XRD)、场发射扫描电镜(FE-SEM)、透射电子显微镜(TEM)、紫外可见漫反射(UV-vis DRS)及比表面积(BET)等测试方法对产物的结构与形貌进行了表征;并以吡啶(Py)石油醚溶液为模拟污染物,考察了其光催化脱氮性能。结果表明,当Fe掺杂量不高于1.0%时,所有复合物均拥有单一的六方晶系纤锌矿结构,尚未出现其他物相。Fe掺杂可有效抑制ZnO晶粒的生长,增大产品的比表面积,并拓宽其光响应范围,显著提高催化剂的光催化活性。处理初始浓度为10μg·g~(-1)的Py石油醚溶液,0.50%Fe光催化剂投加量为0.6 g·L~(-1),光照距离10 cm,经150 W高压汞灯照射50 min,Py的降解率达到65.3%。
[Abstract]:Using Zn(NO_3)_2 6H_2O and NH_3 H2O as raw materials, Fe doped ZnO was synthesized by co-current precipitation method. The structure and morphology of the products were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (SEM), transmission electron microscope (TEM), UV-vis diffuse reflectance (UV-vis DRS) and specific surface area (BET). The photocatalytic denitrification of pyridine petroleum ether solution was investigated. The results show that all the complexes have a single hexagonal wurtzite structure when the amount of Fe doping is less than 1.0, and no other phase. Fe doping can effectively inhibit the growth of ZnO grains and increase the specific surface area of the product. The photocatalytic activity of the catalyst was improved significantly by broadening the range of its photocatalytic response. When the initial concentration of Py petroleum ether solution was 10 渭 g / g ~ (-1), the dosage of 0.50 photocatalyst was 0.6 g / L ~ (-1), the illumination distance was 10 cm, and the degradation rate of Py was up to 65.3% under 150 W high pressure mercury lamp irradiation for 50 min.
【作者单位】：东北石油大学化学化工学院;渤海大学化学化工学院;
【分类号】：O643.36

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