Confinement size effect and tunning optical properties of Zinc oxide quantum dots (ZDs) observed via modified wet chemical preparation method. The purity, high crystallinity, and elongated structure of ZDs investigated by XRD and TEM tests. The crystallized size values, the bandgap energy, and the active surface area for ZD1 and ZD2 determined based on the TEMs, DRSs, and EBTs are 2.9 and 3.6 nm, 3.57 eV and 3.54 eV, and 312.10 m²/g and 278.05 m²/g, respectively. Absorption and fluorescence spectra shifted for ZDs from 340 to 315 nm and from 530 to 500 nm, respectively, due to its confinement effect of their small sizes. The prepared samples revealed that the photocatalytic activity of ZD1 is higher than ZD2 by 20%. Photocatalytic activity of ZDs by the photodegradation process of Coomassie Brilliant Blue R dye as an industrial organic pollutant evaluated (used in textile and dyeing manufactories) by xenon photoreactor and solar photocatalytic processes. The observed results have shown that photocatalytic efficiency increases with crystallite size decreasing. And, the variation between the photocatalytic activity of ZDs prepared samples by the solar photocatalytic process is higher than that observed by the Xenon photoreactor. And their photodegradation rates values are lower than that obtained by the Xenon photoreactor. A similar finding for the recycling process after nine reptation times of using ZDs during all photodegradation processes signified obtained.

通过改进的湿化学制备方法观察到的氧化锌量子点 (ZD) 的限制尺寸效应和调谐光学特性。通过 XRD 和 TEM 测试研究了 ZD 的纯度、高结晶度和细长结构。基于 TEM、DRS 和 EBT 确定的 ZD1 和 ZD2 的结晶尺寸值、带隙能量和活性表面积分别为 2.9 和 3.6 nm、3.57 eV 和 3.54 eV，以及 312.10 m ² /g 和 278.05 m ²/g，分别。由于其小尺寸的限制效应，ZD 的吸收光谱和荧光光谱分别从 340 到 315 nm 和从 530 到 500 nm。制备的样品表明，ZD1 的光催化活性比 ZD2 高 20%。通过氙光反应器和太阳能光催化过程评估作为工业有机污染物的考马斯亮蓝 R 染料（用于纺织和印染厂）的光降解过程中 ZD 的光催化活性。观察到的结果表明，光催化效率随着微晶尺寸的减小而增加。并且，通过太阳能光催化过程制备的 ZDs 样品的光催化活性之间的差异高于氙光反应器观察到的差异。并且它们的光降解率值低于氙光反应器获得的值。在所有光降解过程中使用 ZD 九次后，回收过程的类似发现表明获得了。