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CoAl 2 O 4 –TiO 2 nanocomposite photocatalyst for effective destruction of herbicide imazapyr under visible light
Applied Nanoscience Pub Date : 2021-01-03 , DOI: 10.1007/s13204-020-01644-z
R. M. Mohamed , Z. I. Zaki

Mesoporous CoAl2O4–TiO2 nanocomposites have been tested in this investigation to photo-destruct imazapyr herbicide waste. Numerous percentages of CoAl2O4 were utilized in the preparation of mesoporous CoAl2O4–TiO2 nanocomposites through the sol–gel method. It is terminated from Raman spectra and XRD data that practicing lower CoAl2O4 percentage brings about the progression of intensely crystalline anatase TiO2 phase, which is diminished by extending CoAl2O4 ratio. The surface texture investigation showed that specific surface areas of fabricated TiO2 NPs and 3.0% CoAl2O4–TiO2 nanocomposites are 180 and 160 m2 g−1, respectively, revealing that inclusion of CoAl2O4 has a negative effect on the surface area of TiO2 NPs. Photo-destruction of imazapyr herbicide has been selected to evaluate photocatalytic efficacy of the formulated CoAl2O4–TiO2 nanocomposites, and at the same time, it has been correlated with commercial P25 Degussa covered by irradiation of visible light. CoAl2O4–TiO2 nanocomposite, including 3.0 mass% CoAl2O4 has been established as the optimal composite to achieve the most favorable destruction. Indeed, the photo-destruction of imazapyr herbicide was 100% after 180 min of the reaction. Also, it was found that CoAl2O4–TiO2 nanocomposite incorporating 3.0 mass% of CoAl2O4 photodegraded the imazapyr herbicide 10.2 and 5.1 times faster correlated to P25 Degussa and mesoporous TiO2, respectively.



中文翻译:

CoAl 2 O 4 -TiO 2纳米复合光催化剂在可见光下可有效杀灭除草剂吡虫啉

 在这项研究中,已经测试了介孔CoAl 2 O 4 -TiO 2纳米复合材料对光敏灭草灵除草剂废料的光降解作用。 通过溶胶-凝胶法,大量百分比的CoAl 2 O 4用于制备介孔CoAl 2 O 4 -TiO 2纳米复合材料。从拉曼光谱和XRD数据可以看出,降低CoAl 2 O 4的含量会导致强烈结晶的锐钛矿型TiO 2 相的发展,而锐钛矿型TiO 2相的延伸则通过扩展CoAl 2 O 4来减小。 比。表面纹理研究表明,所制备的TiO 2 NPs和3.0%CoAl 2 O 4 -TiO 2 纳米复合材料的比 表面积分别为180和160 m 2 g -1,这表明CoAl 2 O 4的加入对纳米碳管有负面影响。 TiO 2 NPs的表面积。已选择光敏灭草灵除草剂来评估配制的CoAl 2 O 4 -TiO 2 纳米复合材料的光催化功效,同时,它还与可见光照射下的商用P25 Degussa相关。煤炭已经建立了 包含3.0质量%CoAl 2 O 4的2 O 4 -TiO 2纳米复合材料,作为实现最佳破坏的最佳复合材料。实际上,反应180分钟后,吡虫啉除草剂的光毁率为100%。另外,还发现 掺入3.0质量%CoAl 2 O 4的CoAl 2 O 4 -TiO 2纳米复合物 光降解了吡虫啉除草剂10.2,与P25德固赛和中孔TiO 2的降解速度分别为5.1倍。

更新日期:2021-01-03
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