PREPARATION OF GOLD NANOCOMPOSITES BASED ON PECTIC ACID DIALDEHYDE

International Journal of Applied and Fundamental Research (Международный журнал прикладных и фундаментальных исследований) Pub Date : 2023-01-01 DOI:10.17513/mjpfi.13561

L. Serikova

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Abstract

Nanocomposites with gold nanoparticles based on pectic acid dialdehyde have been synthesized. Pectic acid dialdehyde is a specific carrier obtained by modifying beet pectin. Samples of new multifunctional nanocomposites with gold nanoparticles were studied by UV and IR spectroscopy. The study of IR spectra of the obtained nanobiocomposites shows that under these conditions of synthesis the pectic acid dialdehyde is preserved without any significant transformations; consequently, most of the physicochemical properties and biological activity are preserved as well. The influence of the pH of the medium on the reduction of Ai+ ions is shown. The pH range of 10–11 turned out to be the most optimal for obtaining a nanometallic phase. The appearance of gold nanoparticles is confirmed by a change in the color of solutions. The particle sizes were determined using the scanning electron microscopy method. It is determined that the obtained gold nanocomposites contain spherical nanoparticles with narrowly dispersed sizes. Thus, the use of pectic acid dialdehyde as a reducing agent makes it possible to obtain metal nanoparticles with a certain chemical composition, sizes and shapes, uniformity and stability.

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果胶酸二醛基金纳米复合材料的制备

以果胶酸双醛为基料合成了金纳米复合材料。果胶酸双醛是通过对甜菜果胶进行改性得到的一种特殊载体。采用紫外光谱和红外光谱对新型多功能纳米复合材料进行了研究。红外光谱研究表明，在这些合成条件下，果胶酸双醛未发生明显的转化;因此，大部分的物理化学性质和生物活性也被保存了下来。研究了介质pH值对Ai+还原的影响。结果表明，10-11的pH范围是获得纳米金属相的最佳条件。金纳米颗粒的外观是通过溶液颜色的变化来确定的。采用扫描电镜法测定颗粒大小。结果表明，所制备的金纳米复合材料为球形纳米颗粒，粒径分布较窄。因此，使用果胶酸双醛作为还原剂，可以获得具有一定化学成分、尺寸和形状、均匀性和稳定性的金属纳米颗粒。

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International Journal of Applied and Fundamental Research (Международный журнал прикладных и фундаментальных исследований)

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