Application of Green Synthesized Silver Nanoparticles for Dye Wastewater Treatment

Materials Science Forum Pub Date : 2024-02-15 DOI:10.4028/p-uifca6

Feb Alexis P. Marquez, E. Fundador, N. G. Fundador

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Abstract

A facile one-pot synthesis of silver nanoparticles (AgNPs) was achieved using the ethanolic extract of Cavendish banana florets as source of reducing agents for the conversion of Ag+ to Ag. The appearance of surface plasmon resonance peak between 410–435 nm in the UV Vis spectra confirmed the formation of AgNPs. The effects of different reaction conditions on the size and concentration of AgNPs were evaluated. The optimum conditions identified were pH 7 at 80 °C. Transmission electron microscopy (TEM) revealed spherical AgNPs with a mean particle size of 13.55 nm. On the other hand, energy-dispersive X-ray (EDX) analysis confirmed the presence of silver (Ag) as the bulk element (87.25%). Other elements such as carbon (C) and oxygen (O) are attributed to the capping agents of AgNPs which agrees with the results in the Fourier-transform infrared spectroscopy (FTIR) analysis. The optimized AgNPs were used for dye degradation using methyl orange (MO) as the model dye under acidified conditions. The maximum MO dye degradation of 96.07% and 77.32% at pH 1.5 and 2 were achieved after 10 min and 1320 min, respectively. This highlights the potential use of green-synthesized AgNPs for dye wastewater treatment.

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绿色合成银纳米粒子在染料废水处理中的应用

以卡文迪许香蕉小花的乙醇提取物为还原剂来源，实现了银纳米粒子（AgNPs）的简单一锅合成。紫外可见光谱在 410-435 纳米之间出现的表面等离子共振峰证实了 AgNPs 的形成。评估了不同反应条件对 AgNPs 尺寸和浓度的影响。确定的最佳条件是 pH 值为 7，温度为 80 °C。透射电子显微镜（TEM）显示，AgNPs 呈球形，平均粒径为 13.55 nm。另一方面，能量色散 X 射线（EDX）分析证实银（Ag）是主要元素（87.25%）。其他元素如碳（C）和氧（O）被认为是 AgNPs 的封端剂，这与傅立叶变换红外光谱（FTIR）分析的结果一致。在酸化条件下，以甲基橙（MO）为模型染料，使用优化的 AgNPs 进行染料降解。在 pH 值为 1.5 和 2 的条件下，分别经过 10 分钟和 1320 分钟后，MO 染料的最大降解率分别达到 96.07% 和 77.32%。这凸显了绿色合成的 AgNPs 在染料废水处理中的潜在用途。

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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Materials Science Forum

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