Abstract

In the recent work, synthesis of nanoparticles (NPs) was carried out by using leaves extract of Polyalthia longifolia and Ficus religiosa separately. Fourier transform infrared spectroscopy illustrated the dominant functional groups in leaves extract and prepared nanoparticles. A single surface plasmon resonance peak is obtained in both cases. SEM revealed that both the synthesized nanoparticles were spherical in shape. Average particle size of NiNPs using extract of Polyalthia longifolia and Ficus religiosa was found to be 42.21 nm and 43.178 nm. Different factors were optimized on comparative basis for removal studies of hexavalent chromium. Optimum response for both the nanoparticles is observed at 25 °C with 10 mg/L of Cr (VI) solution at adsorbent dosage value of 10 mg under acidic conditions (4 pH). In regeneration studies, maximum desorption for Polyalthia longifolia (88.16%) and Ficus religiosa (87.84%) leaves extract based nanoparticles was observed with 0.1 M HCl.

摘要

在最近的工作中，通过分别使用长叶榕和榕树的叶子提取物进行纳米颗粒（NPs）的合成。傅里叶变换红外光谱说明了叶子提取物和制备的纳米颗粒中的主要官能团。在两种情况下都获得了单个表面等离子体共振峰。SEM显示两种合成的纳米颗粒都是球形的。使用Polyalthia longifolia和Ficus religiosa提取物的 NiNPs 的平均粒径发现是 42.21 nm 和 43.178 nm。针对六价铬的去除研究，在比较的基础上优化了不同的因素。在 25 °C 和 10 mg/L Cr (VI) 溶液、10 mg 吸附剂剂量值、酸性条件（4 pH）下观察到两种纳米颗粒的最佳响应。在再生研究中，使用 0.1 M HCl 观察到基于纳米颗粒的Polyalthia longifolia (88.16%) 和Ficus religiosa (87.84%) 叶提取物的最大解吸。