利用苋菜提取物绿色合成的 Ag/rGO 复合纳米粒子在生物传感器应用中的局部表面等离子体共振特性

IF 6.7 3区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Science: Advanced Materials and Devices Pub Date : 2024-05-20 DOI:10.1016/j.jsamd.2024.100747
Putri Dwi Jayanti , Zurnansyah , Hafil Perdana Kusumah , Larrisa Jestha Mahardhika , Muhammad Riswan , Sari Wahyuni , Nanang Adrianto , Rona Cuana , Nurul Imani Istiqomah , Huma Ali , Daoud Ali , Chotimah , Edi Suharyadi
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引用次数: 0

摘要

采用 Hummers 法,利用苋菜提取物成功合成了绿色 Ag/rGO 复合纳米粒子。利用棱镜/金/Ag/rGO/空气组成的 Kretschmann 构型研究了 Ag/rGO 的局域表面等离子体共振(LSPR)行为。在棱镜系统中加入 Ag/rGO 复合材料旨在确定 rGO 对 SPR 角度的影响。X 射线衍射结果表明,银存在四个衍射峰,分别为晶格平面(111)、(200)、(220)和(311),证明了银的面心立方晶体结构。表征结果表明,Ag NPs 的尺寸为 23.1 nm,Ag/rGO 复合材料的尺寸为 16.7 nm。傅立叶变换红外分析表明,Ag/rGO 复合材料中存在 O-H、C-H、CO、CC 和 C-O-C 官能团,证实了 Ag/rGO 的形成。紫外可见光谱显示,在 257 纳米和 346-412 纳米处出现了吸收峰,带隙能从 3.27 eV 增加到 3.40 eV。同时,LSPR 测量表明,由于添加了 rGO,SPR 角度发生了变化,从 0.33 ° 变为 0.96 °。总之,添加 rGO 可以优化 Ag 的等离子特性,因此它有可能被应用于提高基于 SPR 的生物传感器的性能。
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Localized surface plasmon resonance properties of green synthesized Ag/rGO composite nanoparticles utilizing Amaranthus viridis extract for biosensor applications

The green synthesized Ag/rGO composite nanoparticles were successfully synthesized using the Hummers' method with Amaranthus viridis extract. The localized surface plasmon resonance (LSPR) behavior of the Ag/rGO was studied using the Kretschmann configuration consisting of prism/Au/Ag/rGO/air. The addition of the Ag/rGO composite to the prism system aims to determine the effect of rGO on the SPR angle. X-ray diffraction results showed that there were four diffraction peaks with the presence of lattice planes (111), (200), (220), and (311), proving the face-centered cubic crystal structure of silver. The characterization results showed that the size of Ag NPs was 23.1 nm, and that of Ag/rGO composite was 16.7 nm. The EDX results of the Ag/rGO composite showed the presence of several elements such as C, O, Ag, and N. Fourier transform infrared analysis showed the presence of O–H, C–H, CO, CC, and C–O–C functional groups confirming the formation of Ag/rGO. The UV–Vis spectra showed an absorption peak at 257 nm and 346–412 nm with an increase in band gap energy from 3.27 eV to 3.40 eV. Meanwhile, the LSPR measurements demonstrate a shift in the SPR angle due to the addition of rGO, in which the angle shifts from 0.33 ° to 0.96 °. In conclusion, the addition of rGO can optimize the plasmonic properties of Ag, so that it potentially could be applied to enhance the performance of SPR-based biosensor applications.

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来源期刊
Journal of Science: Advanced Materials and Devices
Journal of Science: Advanced Materials and Devices Materials Science-Electronic, Optical and Magnetic Materials
CiteScore
11.90
自引率
2.50%
发文量
88
审稿时长
47 days
期刊介绍: In 1985, the Journal of Science was founded as a platform for publishing national and international research papers across various disciplines, including natural sciences, technology, social sciences, and humanities. Over the years, the journal has experienced remarkable growth in terms of quality, size, and scope. Today, it encompasses a diverse range of publications dedicated to academic research. Considering the rapid expansion of materials science, we are pleased to introduce the Journal of Science: Advanced Materials and Devices. This new addition to our journal series offers researchers an exciting opportunity to publish their work on all aspects of materials science and technology within the esteemed Journal of Science. With this development, we aim to revolutionize the way research in materials science is expressed and organized, further strengthening our commitment to promoting outstanding research across various scientific and technological fields.
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