Abstract

Zinc ferrite (ZF) was obtained by a green synthesis using the Ginkgo Biloba extract as reductant and fuel. ZF was characterized by XRD, SEM, EDS, and IR-spectroscopy. The XRD analysis indicates that single spinel structure is formed. The crystallite size of ZF is calculated by Scherer formula and Williamson-Hall method. SEM showed agglomerated morphology of ZF particles. Adsorption measurements were carried out using model solutions of Congo red dye with different concentrations. Adsorption process is described by Langmuir and Freundlich models. It was shown that Langmuir model fitted well the adsorption isotherm. This indicates the homogeneous distribution of surface active centers.

摘要

使用银杏叶提取物作为还原剂和燃料，通过绿色合成获得铁酸锌 (ZF)。ZF 通过 XRD、SEM、EDS 和红外光谱表征。XRD分析表明形成了单一尖晶石结构。ZF 的晶粒尺寸通过 Scherer 公式和 Williamson-Hall 方法计算。SEM显示ZF颗粒的团聚形态。使用不同浓度的刚果红染料模型溶液进行吸附测量。吸附过程由 Langmuir 和 Freundlich 模型描述。结果表明，Langmuir 模型与吸附等温线拟合良好。这表明表面活性中心的均匀分布。