Synthesis, characterization and antimicrobial study of cinnamic acid functionalized Ag nanoparticles

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, COMPOSITES Nanocomposites Pub Date : 2022-04-26 DOI:10.1080/20550324.2022.2066827

Congcong Sun, Hongxin Zhi, Han Li, Jingchao Li, K. Shao, Ya-xin Lin, Yujie Fu, Zhiguo Liu

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引用次数: 2

Abstract

Abstract In order to improve the antimicrobial activity of Ag nanomaterial and minimum their toxicity, cinnamic acid has been utilized as both reducing agent and protecting ligand to synthesis of silver (Ag) nanoparticles (NPs). The synthesized cinnamic acid (CA) functionalized Ag nanoparticles (CA-AgNPs) have been characterized by Ultraviolet-visible spectrophotometry (UV), Fourier transform infrared absorption spectra (FTIR), Atomic force microscope (AFM), Transmission electron microscope (TEM). UV absorption results indicated that a strong absorption band peaked at 452 nm which can be ascribed to the surface plasmon resonance (SPR) of AgNPs. FTIR results of CA-AgNPs indicated that cinnamic acid was indeed bound on the AgNPs. TEM measurements indicated that the products are round spherical NPs with the average particle size of 52.8 nm. Antimicrobial activity tests revealed that CA-AgNPs have significant inhibitory effects on E. coli and C. albicans. The CA-AgNPs prepared in this study are expected to be developed as efficient antimicrobial agents. Graphical Abstract

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肉桂酸功能化银纳米颗粒的合成、表征及抗菌研究

摘要为了提高银纳米材料的抗菌活性，降低银纳米材料的毒性，肉桂酸作为还原剂和保护配体用于银纳米材料的合成。采用紫外可见分光光度(UV)、傅里叶变换红外吸收光谱(FTIR)、原子力显微镜(AFM)、透射电子显微镜(TEM)等对合成的肉桂酸(CA)功能化银纳米粒子(CA- agnps)进行了表征。紫外吸收结果表明，AgNPs在452nm处有一个较强的吸收峰，这可归因于AgNPs的表面等离子体共振(SPR)。CA-AgNPs的FTIR结果表明，肉桂酸确实与AgNPs结合。TEM测试表明，产物为圆形球形NPs，平均粒径为52.8 nm。抑菌活性试验表明，CA-AgNPs对大肠杆菌和白色念珠菌有明显的抑制作用。本研究制备的CA-AgNPs有望开发为高效的抗菌药物。图形抽象

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