Optimization of Fe/Ni, Fe/Cu bimetallic nanoparticle synthesis process utilizing concentrated Camellia sinensis extract solution and activity evaluation through methylene blue removal reaction

Nano Express Pub Date : 2024-06-13 DOI:10.1088/2632-959x/ad5221

Hong Son Nguyen, Van Hoang Nguyen, Thi Thu Huong Nguyen, Ngoc Toan Vu and Ngoc Hoan Le

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Abstract

In this study, we introduce a synthesis process of bimetallic nanoparticles (BNPs) Fe/Ni and Fe/Cu utilizing concentrated Camellia sinenis extract that was optimized with a solvent ratio of ethanol/H2O 4/1 (v/v), a metal ratio of 5/1 (w/w), a total polyphenol content (TPC) in the solution of 12.5 g.l−1, pH = 3–4, 25 °C, and the reaction time ranging from 30 min to 50 min. The structural and morphological characteristics of the resulting materials were determined using several techniques, such as scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive x-ray spectroscopy (EDX), x-ray diffraction (XRD), and x-ray photoelectron spectroscopy (XPS). The maximum removal efficiency of methylene blue (MB) by BNPs Fe/Ni and Fe/Cu materials was found to be 88.60% and 91.06%, respectively, at a concentration of MB = 25 mg.l−1 and 25 °C. According to the results of the kinetic modeling study, the adsorption process of MB on the two BNPs materials followed second-order kinetics, with the maximum adsorption capacities of MB on Fe/Ni and Fe/Cu BNPs being 26.94 mg.g−1and 28.00 mg.g−1, respectively.

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利用浓缩山茶提取物溶液优化铁/镍、铁/铜双金属纳米粒子合成工艺，并通过亚甲基蓝去除反应评估其活性

本研究介绍了一种利用浓缩山茶提取物合成铁/镍和铁/铜双金属纳米粒子（BNPs）的工艺，该工艺经过优化，溶剂比为乙醇/H2O 4/1 (v/v)，金属比为 5/1 (w/w)，溶液中多酚总含量（TPC）为 12.5 g.l-1，pH = 3-4，温度为 25 °C，反应时间为 30 分钟至 50 分钟。利用扫描电子显微镜（SEM）、透射电子显微镜（TEM）、能量色散 X 射线光谱（EDX）、X 射线衍射（XRD）和 X 射线光电子能谱（XPS）等多种技术测定了所得材料的结构和形态特征。研究发现，在 MB 浓度为 25 mg.l-1 和温度为 25 ℃ 时，BNPs 铁/镍和铁/铜材料对亚甲基蓝（MB）的最大去除率分别为 88.60% 和 91.06%。根据动力学模型研究的结果，甲基溴在两种 BNPs 材料上的吸附过程遵循二阶动力学，甲基溴在 Fe/Ni 和 Fe/Cu BNPs 材料上的最大吸附容量分别为 26.94 mg.g-1 和 28.00 mg.g-1。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Nano Express

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