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Zhao X, Cui C, Ma L, Ding Z, Hou J, Xiao Y, Liu B, Qi B, Zhang J, Lu X, Wei J, Watanabe S, Hao N. Acoustofluidic one-step production of plasmonic Ag nanoparticles for portable paper-based ultrasensitive SERS detection of bactericides. J Colloid Interface Sci 2024; 673:426-433. [PMID: 38878376 DOI: 10.1016/j.jcis.2024.06.076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 05/28/2024] [Accepted: 06/08/2024] [Indexed: 07/26/2024]
Abstract
SERS measurements for monitoring bactericides in dairy products are highly desired for food safety problems. However, the complicated preparation process of SERS substrates greatly impedes the promotion of SERS. Here, we propose acoustofluidic one-step synthesis of Ag nanoparticles on paper substrates for SERS detection. Our method is economical, fast, simple, and eco-friendly. We adopted laser cutting to cut out appropriate paper shapes, and aldehydes were simultaneously produced at the cutting edge in the pyrolysis of cellulose by laser which were leveraged as the reducing reagent. In the synthesis, only 5 μL of Ag precursor was added to complete the reaction, and no reducing agent was used. Our recently developed acoustofluidic device was employed to intensely mix Ag+ ions and aldehydes and spread the reduced Ag nanoparticles over the substrate. The SERS substrate was fabricated in 1 step and 3 min. The standard R6G solution measurement demonstrated the excellent signal and prominent uniformity of the fabricated SERS substrates. SERS detection of the safe concentration of three bactericides, including tetracycline hydrochloride, thiabendazole, and malachite green, from food samples can be achieved using fabricated substrates. We take the least cost, time, reagents, and steps to fabricate the SERS substrate with satisfying performance. Our work has an extraodinary meaning for the green preparation and large-scale application of SERS.
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Affiliation(s)
- Xiong Zhao
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, Shaanxi 710049, PR China; State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Road, Shanghai 200050, PR China
| | - Chenyi Cui
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, Shaanxi 710049, PR China
| | - Li Ma
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, Shaanxi 710049, PR China
| | - Zihan Ding
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, Shaanxi 710049, PR China
| | - Junsheng Hou
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, Shaanxi 710049, PR China
| | - Yaxuan Xiao
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, Shaanxi 710049, PR China; Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, Shaanxi 710049, PR China
| | - Biwu Liu
- Institute of Analytical Chemistry and Instrument for Life Science, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Baojin Qi
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, Shaanxi 710049, PR China
| | - Jinhua Zhang
- Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, Shaanxi 710049, PR China
| | - Xinlan Lu
- Department of Gastroenterology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, PR China
| | - Jinjia Wei
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, Shaanxi 710049, PR China
| | - Satoshi Watanabe
- Department of Chemical Engineering, Kyoto University, Katsura, Nishikyo, Kyoto 615-8510, Japan.
| | - Nanjing Hao
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, Shaanxi 710049, PR China; State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Road, Shanghai 200050, PR China.
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Shao T, Xu J, Zhong H, Hu Y, Chen J. A stable and flexible Au@Ag NPs/PVA SERS platform for thiram residue detection on rough surface. Talanta 2024; 274:126008. [PMID: 38599117 DOI: 10.1016/j.talanta.2024.126008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 02/27/2024] [Accepted: 03/27/2024] [Indexed: 04/12/2024]
Abstract
Flexible and transparent surface-enhanced Raman scattering (SERS) substrates have gained great attention in analysis field as they offer a fast, non-destructive, and highly sensitive platform for in-situ detection. In this work, we present a facile one-pot strategy for synthesizing gold-cored silver shell nanoparticles (Au@Ag NPs) in the polyvinyl alcohol (PVA) colloid. With no other reducing agents, PVA can serve as both reducing and stabilizing agents for forming Au@Ag NPs. Besides, PVA acts as a scaffold to maintain SERS "hot-spots" by preventing nanoparticle aggregation. By using this flexible Au@Ag NPs/PVA colloid, the analytes can be extracted from rough surfaces for SERS measurements with excellent sensitivity, repeatability and stability. The SERS activity of the Au@Ag NPs/PVA remained at 89.8% even after 120 days of storage at room temperature in sealed air atmosphere. The selective detection of thiram residues on the surface of fruits and vegetables was successfully achieved. The limits of detection for thiram residues on apple and tomato surfaces were measured to be 0.58 and 0.56 ng cm-2, respectively, with recovery rate ranging from 91% to 107%. This work demonstrates the immense application potential of SERS colloid platform in the fields of food safety and environmental analysis.
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Affiliation(s)
- Tao Shao
- Science and Technology on Surface Physics and Chemistry Laboratory, Jiangyou, 621908, PR China
| | - Jinsong Xu
- Science and Technology on Surface Physics and Chemistry Laboratory, Jiangyou, 621908, PR China
| | - Hang Zhong
- Science and Technology on Surface Physics and Chemistry Laboratory, Jiangyou, 621908, PR China
| | - Yi Hu
- Science and Technology on Surface Physics and Chemistry Laboratory, Jiangyou, 621908, PR China
| | - Jun Chen
- Science and Technology on Surface Physics and Chemistry Laboratory, Jiangyou, 621908, PR China.
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Cao Y, Sun Y, Yu RJ, Long YT. Paper-based substrates for surface-enhanced Raman spectroscopy sensing. Mikrochim Acta 2023; 191:8. [PMID: 38052768 DOI: 10.1007/s00604-023-06086-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 11/04/2023] [Indexed: 12/07/2023]
Abstract
Surface-enhanced Raman scattering (SERS) has been recognized as one of the most sensitive analytical methods by adsorbing the target of interest onto a plasmonic surface. Growing attention has been directed towards the fabrication of various substrates to broaden SERS applications. Among these, flexible SERS substrates, particularly paper-based ones, have gained popularity due to their easy-to-use features by full contact with the sample surface. Herein, we reviewed the latest advancements in flexible SERS substrates, with a focus on paper-based substrates. Firstly, it begins by introducing various methods for preparing paper-based substrates and highlights their advantages through several illustrative examples. Subsequently, we demonstrated the booming applications of these paper-based SERS substrates in abiotic and biological matrix detection, with particular emphasis on their potential application in clinical diagnosis. Finally, the prospects and challenges of paper-based SERS substrates in broader applications are discussed.
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Affiliation(s)
- Yue Cao
- Department of Forensic Medicine, Nanjing Medical University, Nanjing, 211166, People's Republic of China.
| | - Yang Sun
- Department of Forensic Medicine, Nanjing Medical University, Nanjing, 211166, People's Republic of China
| | - Ru-Jia Yu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China.
- Chemistry and Biomedicine Innovation Center, Nanjing University, Nanjing, 210023, China.
| | - Yi-Tao Long
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
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Ma H, Zhang S, Yuan G, Liu Y, Cao X, Kong X, Wang Y. Surface-Enhanced Raman Spectroscopy (SERS) Activity of Gold Nanoparticles Prepared Using an Automated Loop Flow Reactor. APPLIED SPECTROSCOPY 2023; 77:1163-1172. [PMID: 37654053 DOI: 10.1177/00037028231196907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
This study used automatic control methods to prepare gold nanoparticles (AuNPs) as the substrate and rhodamine 6G molecule as the probe to investigate the enhancement effect, stability, and consistency of surface-enhanced Raman spectroscopy (SERS). The gold nanosols were prepared via automatic control using loop flow-reactor technology, and the synthesis of nanoparticles with different sizes was precisely controlled by optimizing the ratio of the solution required for the reaction between sodium citrate and chloroauric acid during the preparation process. The morphology, structure, and optical properties of the prepared AuNPs were investigated using field-emission scanning electron microscopy, transmission electron microscopy, and ultraviolet visible spectroscopy. Using the proposed method, AuNPs with average particle sizes of 72, 85, 93, and 103 nm were synthesized in a precisely controlled manner. The 93 nm particles exhibited good SERS activity for rhodamine 6G under 785 nm excitation with a detection limit of 2.5 × 10-10 M. The relative standard deviation of the SERS spectra synthesized multiple times was <3.5%, indicating their good sensitivity and reproducibility. The results showed that the AuNPs prepared by the automatic control of the loop-flow method have high sensitivity, stability, and reproducibility. Moreover, they exhibited notable potential for in situ measurement and quantitative analysis using SERS.
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Affiliation(s)
- Haikuan Ma
- College of Information Science and Engineering, Ocean University of China, Qingdao, China
- Institute of Oceanographic Instrumentation, Qilu University of Technology (Shandong Academy of Sciences), Qingdao, China
- Shandong Provincial Key Laboratory of Marine Monitoring Instrument Equipment Technology, Qingdao, China
- National Engineering and Technological Research Center of Marine Monitoring Equipment, Qingdao, China
| | - Shuwei Zhang
- Institute of Oceanographic Instrumentation, Qilu University of Technology (Shandong Academy of Sciences), Qingdao, China
- Shandong Provincial Key Laboratory of Marine Monitoring Instrument Equipment Technology, Qingdao, China
- National Engineering and Technological Research Center of Marine Monitoring Equipment, Qingdao, China
| | - Guang Yuan
- College of Information Science and Engineering, Ocean University of China, Qingdao, China
| | - Yan Liu
- Institute of Oceanographic Instrumentation, Qilu University of Technology (Shandong Academy of Sciences), Qingdao, China
- Shandong Provincial Key Laboratory of Marine Monitoring Instrument Equipment Technology, Qingdao, China
- National Engineering and Technological Research Center of Marine Monitoring Equipment, Qingdao, China
| | - Xuan Cao
- Institute of Oceanographic Instrumentation, Qilu University of Technology (Shandong Academy of Sciences), Qingdao, China
- Shandong Provincial Key Laboratory of Marine Monitoring Instrument Equipment Technology, Qingdao, China
- National Engineering and Technological Research Center of Marine Monitoring Equipment, Qingdao, China
| | - Xiangfeng Kong
- Institute of Oceanographic Instrumentation, Qilu University of Technology (Shandong Academy of Sciences), Qingdao, China
- Shandong Provincial Key Laboratory of Marine Monitoring Instrument Equipment Technology, Qingdao, China
- National Engineering and Technological Research Center of Marine Monitoring Equipment, Qingdao, China
| | - Yang Wang
- Institute of Oceanographic Instrumentation, Qilu University of Technology (Shandong Academy of Sciences), Qingdao, China
- Shandong Provincial Key Laboratory of Marine Monitoring Instrument Equipment Technology, Qingdao, China
- National Engineering and Technological Research Center of Marine Monitoring Equipment, Qingdao, China
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