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首页> 外文期刊>Environmental engineering and management journal >DECONTAMINATION OF PESTICIDE RESIDUES IN WATER SAMPLES USING COPPER AND ZINC CO-DOPED TITANIA NANOCATALYST
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DECONTAMINATION OF PESTICIDE RESIDUES IN WATER SAMPLES USING COPPER AND ZINC CO-DOPED TITANIA NANOCATALYST

机译：用铜和锌掺杂二氧化钛纳米催化剂去污水样中的农药残留物

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摘要

Copper and Zinc co-doped titania nano photocatalyst (Cu-Zn-TiO2 NPC) was fabricated and characterized using room temperature X-ray diffraction (XRD), field emission electron microscopy (FESEM) with high-resolution transmission electron microscopy (HRTEM) and energy dispersion X-ray (EDX). X-ray diffraction studies of the Cu2+-Zn2+/TiO2 show the presence of anatase phase TiO2 and in the sample prepared from 0.05, 0.10, 0.15 and 0.20 mmol have also shown the presence of anatase phase only. The photocatalytic efficiency of the synthesized catalysts was investigated by the photocatalytic degradation of aqueous bispyribac sodium under sun light irradiation, and it was found that the Cu and Zn co-doped TiO2 catalysts has better photocatalytic activity. It can be also showed that with the addition of dopants to titania hinders the growth of nanoparticles. This can be attributed of the fact that there is a more efficient electron-hole creation in Cu and Zn co-doped TiO2 in sunlight, contrary to un-doped TiO2 which can be excited only in UV irradiation. Photocatalytic studies of bispyribac sodium at various conditions such as acidic, basic and neutral reveals that the activity is enormously increased with co-doped TiO2 is proved to be effective for photocatalysis of bispyribac sodium and is more effective in basic medium.
机译：使用高分辨率透射电子显微镜（HRTEM）和高分辨率透射电子显微镜（HRTEM）制备铜和锌共掺杂二氧化钛纳米光催化剂（Cu-Zn-TiO2 NPC），并表征了高分辨率透射电子显微镜（HRTEM）的场发射电子显微镜（FESEM）能量分散X射线（EDX）。 Cu2 + -Zn2 + / TiO2的X射线衍射研究显示出锐钛矿相TiO 2的存在和在0.05,0.10,0.15和0.20mmol制备的样品中也显示出锐钛矿阶段的存在。通过在阳光照射下的光催化降解的光催化降解了合成催化剂的光催化效率，发现Cu和Zn共掺杂TiO2催化剂具有更好的光催化活性。还可以表明，随着掺杂剂的掺杂剂阻碍了纳米颗粒的生长。这可以归因于Cu和Zn在阳光下在Cu和Zn共掺杂TiO 2中产生更有效的电子孔产生，这与不掺杂的TiO 2相反，其仅在紫外线照射中可以兴奋。在酸性，碱性和中性如酸性，碱性和中性等各种条件下的光催化研究表明，通过共掺杂的TiO 2，活性增加了活性，因此对碧桂酸钠的光催化是有效的，并且在基础培养基中更有效。

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