研究目的
Investigating the photocatalytic degradation of Methylene Blue using biosynthesized Zinc Oxide Nanoparticles from Bark extract of Kalopanax septemlobus.
研究成果
The study successfully synthesized Ks-ZnO NPs using K. septemlobus bark extract, demonstrating high photocatalytic activity in degrading Methylene Blue under UV light. The green synthesis approach offers a cost-effective and eco-friendly method for producing photocatalysts with potential applications in environmental remediation.
研究不足
The study focuses on the photocatalytic degradation of Methylene Blue under UV light irradiation, which may not be directly applicable to other pollutants or under different light conditions. The scalability and long-term stability of the Ks-ZnO NPs for industrial applications were not extensively explored.
1：Experimental Design and Method Selection:
The study employed a green approach one-pot synthesis for the biosynthesis of ZnO nanoparticles using K. septemlobus bark extract as a capping agent and Zn(OAc)2 as the metal precursor.
2：Sample Selection and Data Sources:
K. septemlobus barks were collected from Ginseng Bank, Kyung Hee University, Republic of Korea.
3：List of Experimental Equipment and Materials:
Zinc acetate (Zn(OAc)2) and sodium hydroxide (NaOH) were purchased from Sigma-Aldrich Chemicals Co. Ltd, USA. Methylene blue (MB) was purchased from Honeywell Fluka, Co. Ltd, Switzerland.
4：Experimental Procedures and Operational Workflow:
The synthesis involved heating the plant extract with zinc acetate solution, centrifugation, washing with ethanol, and drying. Characterization was done using UV-Vis spectroscopy, FTIR, XRD, FE-TEM, and EDX. Photocatalytic activity was assessed under UV light irradiation.
5：Data Analysis Methods:
The degradation percentage of MB was calculated by differentiating optical absorption spectra, and the reaction rate constant was determined using first-order reaction kinetics.
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