Silica nanoparticles surface-decorated with Au-Ag alloy nanoparticles as highly sensitive, reproducible, and stable surface-enhanced Raman scattering (SERS) substrates

被引:0
作者
Cho, Hye-Seong [1 ]
Yang, Cho-Hee [1 ]
Kim, Yoon-Hee [1 ]
Kim, Young Jun [1 ]
Yoo, Kwanghee [1 ]
Shin, Minsup [1 ]
Bae, Han-Joo [1 ]
Jun, Bong-Hyun [1 ]
机构
[1] Konkuk Univ, Dept Integrat Biosci & Biotechnol, Seoul 05029, South Korea
基金
新加坡国家研究基金会;
关键词
Surface-enhanced Raman spectroscopy; Seed-mediated growth; Gold-Silver Alloy; Stability; Pesticides; SILVER NANOPARTICLES; METAL; GOLD; STABILITY; NANOSTRUCTURES; NANOSHELLS; NANORODS; FACILE; IMPACT; GROWTH;
D O I
10.1016/j.jallcom.2024.177523
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The optical properties of metal nanoparticles (NPs) are heavily influenced by their structure and composition, making them useful in surface-enhanced Raman scattering (SERS) applications. In addition, metal-embedded silica NPs have excellent plasmonic characteristics and high reproducibility that further enhance SERS measurements. Although silica NPs have been encapsulated in various metals and alloys, practical applications require strong, stable, and reproducible optical signals. Herein, we synthesized Silica nanoparticles surfacedecorated with Au-Ag alloy nanoparticles (SiO2@AuAg NPs) to perform as excellent SERS substrates. SiO2@AuAg NPs were synthesized by introducing seed Au NPs onto a spherical SiO2 NP core, followed by the addition of Au and Ag ions. From the NP characterization results, we also elucidate the growth mechanism for AuAg alloy NPs depending on the ratio of added Au to Ag ions. SiO2@AuAg NPs synthesized under optimized conditions exhibited a strong SERS signal with high stability, sensitivity, and reproducibility. Finally, SiO2@AuAg NPs successfully detected crystal violet (CV), thiram, and carbaryl at levels of 6.95 x10- 7 M, 5.56 x10- 7 M, and 7.14 x10- 6 M, respectively, which are lower than the pesticide residue limits set by the U.S. Environmental Protection Agency (EPA). The detection reproducibility was also high, with an approximate relative standard deviation (RSD) of only 8.4 % even after 3 days. The SERS substrate not only has high SERS activity and stability but can also be used to detect trace amounts of chemicals, enabling accurate SERS-based applications.
引用
收藏
页数:9
相关论文
共 50 条
  • [1] Highly sensitive and reliable SERS probes based on nanogap control of a Au-Ag alloy on silica nanoparticles
    Pham, Xuan-Hung
    Lee, Minwoo
    Shim, Seongbo
    Jeong, Sinyoung
    Kim, Hyung-Mo
    Hahm, Eunil
    Lee, Sang Hun
    Lee, Yoon-Sik
    Jeong, Dae Hong
    Jun, Bong-Hyun
    RSC ADVANCES, 2017, 7 (12) : 7015 - 7021
  • [2] Green and Controllable Synthesis of Au-Ag Bimetal Nanoparticles by Xylan for Surface-Enhanced Raman Scattering
    Cai, Jihai
    Li, Yichen
    Liu, Chuanfu
    Wang, Xiaoying
    ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 2019, 7 (18): : 15154 - 15162
  • [3] Direct Cross-Linking of Au/Ag Alloy Nanoparticles into Monolithic Aerogels for Application in Surface-Enhanced Raman Scattering
    Gao, Xiaonan
    Esteves, Richard J. Alan
    Nahar, Lamia
    Nowaczyk, Jordan
    Arachchige, Indika U.
    ACS APPLIED MATERIALS & INTERFACES, 2016, 8 (20) : 13076 - 13085
  • [4] Hydrogenated black TiO2 nanowires decorated with Ag nanoparticles as sensitive and reusable surface-enhanced Raman scattering substrates
    Shan, Yufeng
    Yang, Yong
    Cao, Yanqin
    Yin, Hao
    Long, Nguyen Viet
    Huang, Zhengren
    RSC ADVANCES, 2015, 5 (44) : 34737 - 34743
  • [5] Patterned Au@Ag Nanoparticles for Surface-Enhanced Raman Scattering
    Huang, Zhenkai
    Chen, Yutong
    Xu, Liguo
    Peng, Jianping
    Liu, Peijiang
    ACS APPLIED NANO MATERIALS, 2024, 7 (21) : 25099 - 25106
  • [6] Electrospun TiO2 Nanofelt Surface-Decorated with Ag Nanoparticles as Sensitive and UV-Cleanable Substrate for Surface Enhanced Raman Scattering
    Zhao, Yong
    Sun, Lei
    Xi, Min
    Feng, Quan
    Jiang, Chaoyang
    Fong, Hao
    ACS APPLIED MATERIALS & INTERFACES, 2014, 6 (08) : 5759 - 5767
  • [7] Au Nanoparticles Decorated CoP Nanowire Array: A Highly Sensitive, Anticorrosive, and Recyclable Surface-Enhanced Raman Scattering Substrate
    Li, Ling
    Zhang, Longcheng
    Gou, Lichen
    Wei, Siqi
    Hou, Xiandeng
    Wu, Li
    ANALYTICAL CHEMISTRY, 2023, 95 (29) : 11037 - 11046
  • [8] Surface-Enhanced Raman Scattering (SERS) Substrates Based on Ag-Nanoparticles and Ag-Nanoparticles/Poly (methyl methacrylate) Composites
    Matamoros-Ambrocio, Mayra
    Sanchez-Mora, Enrique
    Gomez-Barojas, Estela
    POLYMERS, 2023, 15 (12)
  • [9] Periodic silver nanodishes as sensitive and reproducible surface-enhanced Raman scattering substrates
    Tao, Wenyu
    Zhao, Aiwu
    Sun, Henghui
    Gan, Zibao
    Zhang, Maofeng
    Li, Da
    Guo, Hongyan
    RSC ADVANCES, 2014, 4 (07) : 3487 - 3493
  • [10] Facile Fabrication of Au Nanoparticles-Decorated Ni Nanocone Arrays as Effective Surface-Enhanced Raman Scattering Substrates
    Xia, Yuanyuan
    Mo, Xiu
    Ling, Huiqin
    Hang, Tao
    Li, Ming
    JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2016, 163 (10) : D575 - D578