Abstract

In this investigation, Pergularia tomentosa leaves were used as a promising source of bioproducts for the reduction of copper sulfate into copper oxide nanoparticles. The prepared nanoparticles were characterized using Fourier-transform infrared spectroscopy (FT-IR), X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission electron microscopy (TEM), and Thermogravimetric analysis (TGA). FI-IR showed the presence of hydroxyl, ester, and aromatic groups, which are characteristics of phenolics and other bioproducts. SEM features exhibited spherical and agglomerated particles. In EDX data, the peak at 1 Kev, is an index of metallic nanoparticles of copper. The signals related to C and O peaks indicated the presence of phytochemicals in the studied extract. The synthesized copper oxide nanoparticles had a face-centered cubic structure. The size of the nanoparticles varied from 1.7 to 15.2 nm. The adsorption capacity of methylene blue using copper oxide nanoparticles reached 93.2 mg/g (pH = 6, T = 22 °C, adsorbent dose = 0.0125 g). Additionally, methylene blue solution was completely decolorized after 2 min of reaction (pH = 6, 0.0057 mg NaBH₄, C₀ = 10 mg/L, catalyst = 0.005 g).

NOVELTY STATEMENT

In this study, Pergularia tomentosa leaves were used, for the first time, as a biomaterial rich in bioproducts for the reduction of copper sulfate into copper oxide nanoparticles. The prepared particles act as promising materials for the decolorization of contaminated water via both adsorption and degradation processes.

摘要

在本次调查中，Pergularia tomentosa叶子被用作将硫酸铜还原成氧化铜纳米颗粒的有希望的生物产品来源。使用傅里叶变换红外光谱 (FT-IR)、X 射线衍射 (XRD)、扫描电子显微镜 (SEM)、透射电子显微镜 (TEM) 和热重分析 (TGA) 对制备的纳米颗粒进行表征。FI-IR 显示存在羟基、酯和芳香基团，这是酚醛树脂和其他生物制品的特征。SEM 特征表现为球形和团聚颗粒。在 EDX 数据中，1 Kev 处的峰值是铜的金属纳米颗粒的指数。与 C 和 O 峰相关的信号表明所研究的提取物中存在植物化学物质。合成的氧化铜纳米粒子具有面心立方结构。纳米颗粒的尺寸从 1.7 到 15.2 nm 不等。使用氧化铜纳米粒子对亚甲蓝的吸附能力达到 93.2 mg/g (pH = 6,T  = 22 °C，吸附剂剂量 = 0.0125 g)。另外，亚甲蓝溶液在反应2分钟后完全脱色（pH = 6, 0.0057 mg NaBH ₄ , C ₀ = 10 mg/L, 催化剂 = 0.005 g）。

新颖性声明

在这项研究中，首次使用Pergularia tomentosa叶子作为富含生物产品的生物材料，用于将硫酸铜还原成氧化铜纳米颗粒。制备的颗粒可作为通过吸附和降解过程对污染水进行脱色的有前景的材料。