Al Bilad Bank Scholarly Chair for Food Security in Saudi Arabia, The Deanship of Scientific Research, The Vice Presidency for Graduate Studies and Scientific Research, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia.
Department of Physics, College of Science, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia.
Molecules. 2022 Jun 7;27(12):3673. doi: 10.3390/molecules27123673.
Energy and water related problems have attracted strong attention from scientists across the world because of deficient energy and water pollution. Following this line, new strategy depended on preparing nanolayers of Al/Zn and magnetic nanoparticles of cobalt iron oxides nanocomposite in addition to long chains of hydrocarbons of stearic acid to be used as roofs, fillers and pillars; respectively, to design optical-active nanohybrids in sunlight for removing the colored pollutants from water in few minutes. By using long chains of hydrocarbons of stearic acid, X-ray diffraction (XRD) results and TEM images showed expansion of the interlayered spacing from 0.76 nm to 2.02 nm and insertion of magnetic nanoparticles among the nanolayers of Al/Zn. The optical properties and activities showed that the nanohybrid structure based on zinc oxide led to clear reduction of the band gap energy from 3.3 eV to 2.75 eV to be effective in sunlight. Photocatalytic degradation of the dye of acid green 1 confirmed the high activity of the prepared zinc oxide nanohybrids because of a complete removal of the dye after ten minutes in sunlight. Finally, this strategy was effective for producing photo-active nanohybrids for using renewable and non-polluting energy for purifying water.
由于能源短缺和水污染问题，能源和水资源相关问题引起了全世界科学家的强烈关注。基于这一思路，我们提出了一种新策略，即在准备纳米 Al/Zn 层和 CoFe2O4 磁性纳米粒子复合材料的同时，还利用硬脂酸的长链烃作为屋顶、填充剂和支柱，分别设计在阳光下具有光学活性的纳米杂化材料，以在几分钟内去除水中的有色污染物。通过使用硬脂酸的长链烃，X 射线衍射（XRD）结果和 TEM 图像显示，层间间距从 0.76nm 扩展到 2.02nm，并且磁性纳米粒子插入到 Al/Zn 的纳米层之间。光学性质和活性表明，基于氧化锌的纳米杂化结构导致带隙能从 3.3eV 明显降低到 2.75eV，从而在阳光下有效。酸绿 1 染料的光催化降解证实了所制备的氧化锌纳米杂化物具有很高的活性，因为在阳光下十分钟后染料完全被去除。最后，该策略有效地制备了光活性纳米杂化物，利用可再生、无污染的能源来净化水。
