利用胡椒果提取物从废弃太阳能电池板中绿色合成纳米氧化铜及其抗菌活性

Catalysts Pub Date : 2024-07-24 DOI:10.3390/catal14080472
A. Shafiq, Ujin Jeong, Yunseon Han, Youngsik Kim, Joonmin Lee, Beom Soo Kim
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引用次数: 0

摘要

为了促进环境发展和维持资源循环,从电子废物中回收金属至关重要。电子垃圾是重要的二次金属来源,其产量迅速增加,但大部分仍未回收利用。在太阳能电池板中,铜是价值仅次于银的金属。我们提出了一种从废弃太阳能电池板中回收铜的创新方法,并利用绿色合成法将其转化为氧化铜纳米粒子(CuONPs)。与块状材料相比,CuONPs 的表面积较大,因此合成 CuONPs 具有优势。硝酸是一种强氧化剂,用于从废弃太阳能电池板中的固体铜线中沥滤铜。采用自下而上的绿色合成方法,利用胡椒果提取物合成 CuONPs。利用各种定性和定量技术对合成的纳米粒子进行了表征。光谱分析证实了 CuONPs 的形成,透射电子显微镜显示纳米颗粒呈球形,大小可达 60 纳米。在结晶的 CuONPs 表面检测到了来自胡椒提取物的生物分子。采用井扩散法,这些纳米颗粒对革兰氏阴性大肠杆菌和革兰氏阳性金黄色葡萄球菌具有抗菌活性,与金黄色葡萄球菌相比,大肠杆菌的抑菌区更大。这项研究展示了从废弃太阳能电池板中完全回收铜并将其转化为有用的 CuONPs 的过程,而 CuONPs 具有潜在的医药应用价值。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Green Synthesis of Copper Oxide Nanoparticles from Waste Solar Panels Using Piper nigrum Fruit Extract and Their Antibacterial Activity
To promote environmental development and sustain resource circularity, recycling metals from electronic waste is essential. Electronic waste is a significant secondary source of metals, with its production increasing rapidly and most remaining unrecycled. In solar panels, copper is the second-most-valuable metal after silver. We propose an innovative method to recycle copper from waste solar panels and convert it into copper oxide nanoparticles (CuONPs) using a green synthesis method. Synthesizing CuONPs is advantageous due to their large surface area compared to bulk material. Nitric acid, a strong oxidizing agent, was used to leach copper from solid copper wires in waste solar panels. A green synthesis method, following a bottom-up approach, was employed using Piper nigrum fruit extract to synthesize CuONPs. The synthesized nanoparticles were characterized using various qualitative and quantitative techniques. Spectroscopic analysis confirmed the formation of CuONPs, and transmission electron microscopy revealed that the nanoparticles were spherical with sizes up to 60 nm. Biomolecules from the Piper nigrum extract were detected on the surface of the crystalline CuONPs. These nanoparticles exhibited antibacterial activity against Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus using a well-diffusion method, showing a larger zone of inhibition for E. coli compared to S. aureus. This research demonstrates the complete recovery of copper from waste solar panels and its conversion into useful CuONPs, which have potential medicinal applications.
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