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利用葡萄茎秆废料提取物绿色合成银纳米颗粒用于丝网印刷电极的改性

Green Synthesis of Ag Nanoparticles Using Grape Stalk Waste Extract for the Modification of Screen-Printed Electrodes.

作者信息

Bastos-Arrieta Julio, Florido Antonio, Pérez-Ràfols Clara, Serrano Núria, Fiol Núria, Poch Jordi, Villaescusa Isabel

机构信息

Departament d'Enginyeria Química, Escola d'Enginyeria de Barcelona Est (EEBE), Universitat Politècnica de Catalunya, BarcelonaTEch (UPC), Av. Eduard Maristany 16, 08019 Barcelona, Spain.

Physical Chemistry TU Dresden, Zellescher Weg 19, 01062 Dresden, Germany.

出版信息

Nanomaterials (Basel). 2018 Nov 17;8(11):946. doi: 10.3390/nano8110946.

DOI:10.3390/nano8110946
PMID:30453600
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6266962/
Abstract

The chemical synthesis of silver nanoparticles (Ag-NPs) by using an environmentally friendly methodology for their preparation is presented. Thus, considering that plants possess components that can act as reducing agents and stabilizers in nanoparticles' production, the synthesis of Ag-NPs by using an extract aqueous solution of grape stalk waste as a reducing and capping agent is studied. First, the total polyphenols and reducing sugars contained in the produced extracts at different conditions are characterized. After that, Ag-NPs are synthesized regarding the interaction of Ag ions (from silver nitrate) and the grape stalk extract. The effect of temperature, contact time, extract/metal solution volume ratio and pH solution in the synthesis of metal nanoparticles are also studied. Different sets of nanoparticle samples are characterized by means of Electron Microscopy coupled with Energy Dispersive X-Ray for qualitative chemical identification. Ag-NPs with an average diameter of 27.7 ± 0.6 nm are selected to proof their suitability for sensing purposes. Finally, screen-printed electrodes modified with Ag-NPs are tested for the simultaneous stripping voltammetric determination of Pb(II) and Cd(II). Results indicate good reproducibility, sensitivity and limits of detection around 2.7 µg L for both metal ions.

摘要

本文介绍了一种采用环境友好型方法制备银纳米颗粒（Ag-NPs）的化学合成方法。鉴于植物含有可在纳米颗粒生产中充当还原剂和稳定剂的成分，研究了以葡萄茎废弃物的提取水溶液作为还原剂和封端剂来合成Ag-NPs。首先，对在不同条件下所制备提取物中含有的总多酚和还原糖进行了表征。之后，根据银离子（来自硝酸银）与葡萄茎提取物的相互作用合成了Ag-NPs。还研究了温度、接触时间、提取物/金属溶液体积比和溶液pH值对金属纳米颗粒合成的影响。通过结合能量色散X射线的电子显微镜对不同组的纳米颗粒样品进行表征，以进行定性化学鉴定。选择平均直径为27.7±0.6 nm的Ag-NPs来证明其适用于传感目的。最后，对用Ag-NPs修饰的丝网印刷电极进行了测试，用于同时溶出伏安法测定Pb(II)和Cd(II)。结果表明，两种金属离子的重现性、灵敏度良好，检测限约为2.7 μg/L。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ab04/6266962/04f0ccb76fad/nanomaterials-08-00946-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ab04/6266962/314c3b95b10d/nanomaterials-08-00946-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ab04/6266962/5991b1035712/nanomaterials-08-00946-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ab04/6266962/6450395ed4cd/nanomaterials-08-00946-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ab04/6266962/d6041f0fbd72/nanomaterials-08-00946-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ab04/6266962/568a5e99d7ae/nanomaterials-08-00946-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ab04/6266962/a8b823a5194c/nanomaterials-08-00946-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ab04/6266962/04f0ccb76fad/nanomaterials-08-00946-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ab04/6266962/314c3b95b10d/nanomaterials-08-00946-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ab04/6266962/5991b1035712/nanomaterials-08-00946-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ab04/6266962/6450395ed4cd/nanomaterials-08-00946-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ab04/6266962/d6041f0fbd72/nanomaterials-08-00946-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ab04/6266962/568a5e99d7ae/nanomaterials-08-00946-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ab04/6266962/a8b823a5194c/nanomaterials-08-00946-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ab04/6266962/04f0ccb76fad/nanomaterials-08-00946-g007.jpg

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