Graduate School of Biotechnology, College of Life Sciences, Kyung Hee University, Yongin 17104, Republic of Korea.
Department of Oriental Medicinal Biotechnology, College of Life Sciences, Kyung Hee University, Yongin 17104, Republic of Korea.
J Photochem Photobiol B. 2019 Oct;199:111588. doi: 10.1016/j.jphotobiol.2019.111588. Epub 2019 Aug 9.
Green synthesis of zinc oxide has gained extensive attention as a reliable, sustainable, and eco-friendly protocol to reduce the destructive effects associated with the traditional synthesis methods commonly utilized in laboratory and industry. Here for the first time, we have synthesized quaker ladies flower type ZnO (ZnO/QNF) from panos extract (extract from four panax plants such as Panax ginseng, Acanthopanax senticosus, Kalopanax septemlobus and Dendropanax morbifera). The synthesized ZnO materials was characterized using powder X-ray diffraction, Fourier infrared spectroscopy, X-ray photoelectron spectroscopy and Transmission electron microscope. The newly synthesized ZnO/QNF was applied for the removal of industrial dyes such as methylene blue (MB), Eosin Y (EY) and Malachite green (MG) under UV illumination. The photocatalyst degraded the 15 mg L MB, EY and MG to >99% within 80, 90 and 110 min of contact time, respectively. In addition, the ZnO/QNF photocatalyst removed the low concentrated 5 mg L of MB, EY, and MG within 30, 35 and 40 min of contact time, respectively. The pedal structure provided all the active sites available for the easy interaction with dye molecule under UV, and that enabled fast kinetics of dye degradation than the many other benchmark materials reported previously. The ZnO photocatalyst could be reused minimum of five cycles without any significant loss in degradation efficiency.
氧化锌的绿色合成作为一种可靠、可持续和环保的方法，已经引起了广泛的关注，可以减少传统合成方法对实验室和工业造成的破坏性影响。在这里，我们首次从朝鲜蓟提取物中合成了 Quaker Ladies Flower 型氧化锌（ZnO/QNF）（来自四种人参植物，如人参、刺五加、刺五加和五加）。合成的 ZnO 材料使用粉末 X 射线衍射、傅里叶红外光谱、X 射线光电子能谱和透射电子显微镜进行了表征。新合成的 ZnO/QNF 被用于在紫外光照射下去除工业染料，如亚甲基蓝（MB）、曙红 Y（EY）和孔雀石绿（MG）。光催化剂在 80、90 和 110 分钟的接触时间内分别将 15mg/L 的 MB、EY 和 MG 降解到>99%。此外，ZnO/QNF 光催化剂在 30、35 和 40 分钟的接触时间内分别去除了低浓度的 5mg/L 的 MB、EY 和 MG。踏板结构提供了所有的活性位点，可在紫外光下与染料分子进行容易的相互作用，这使得染料降解的动力学比以前报道的许多其他基准材料更快。ZnO 光催化剂可以重复使用至少 5 次，而不会导致降解效率有任何显著损失。
