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Wu Z, Liu J, Wang Z, Chen L, Xu Y, Ma Z, Kong D, Luo D, Liu YJ. Nanosphere Lithography-Enabled Hybrid Ag-Cu Surface-Enhanced Raman Spectroscopy Substrates with Enhanced Absorption of Excitation Light. BIOSENSORS 2023; 13:825. [PMID: 37622911 PMCID: PMC10452600 DOI: 10.3390/bios13080825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/15/2023] [Accepted: 08/15/2023] [Indexed: 08/26/2023]
Abstract
We demonstrated a low-cost, highly sensitive hybrid Ag-Cu substrate with enhanced absorption for the excitation laser beam via the nanosphere lithography technique. The hybrid Ag-Cu surface-enhanced Raman spectroscopy (SERS) substrate consists of a Cu nanoarray covered with Ag nanoparticles. The geometry of the deposited Cu nanoarray is precisely determined through a self-assembly nanosphere etching process, resulting in optimized absorption for the excitation laser beam. Further Raman enhancement is achieved by incorporating plasmonic hotspots formed by dense Ag nanoparticles, grown by immersing the prepared Cu nanoarray in a silver nitrate solution. The structural design enables analytical enhancement factor of hybrid Ag-Cu SERS substrates of 1.13 × 105. The Ag-Cu SERS substrates exhibit a highly sensitive and reproducible SERS activity, with a low detection limit of 10-13 M for Rhodamine 6G detection and 10-9 M for 4,4'-Bipyridine. Our strategy could pave an effective and promising approach for SERS-based rapid detection in biosensors, environmental monitoring and food safety.
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Affiliation(s)
- Zixuan Wu
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China; (Z.W.); (Z.W.); (L.C.); (Y.X.); (Z.M.); (D.K.); (D.L.)
| | - Jianxun Liu
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China; (Z.W.); (Z.W.); (L.C.); (Y.X.); (Z.M.); (D.K.); (D.L.)
- Shenzhen Engineering Research Center for High Resolution Light Field Display and Technology, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zhenming Wang
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China; (Z.W.); (Z.W.); (L.C.); (Y.X.); (Z.M.); (D.K.); (D.L.)
- Shenzhen Engineering Research Center for High Resolution Light Field Display and Technology, Southern University of Science and Technology, Shenzhen 518055, China
| | - Lei Chen
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China; (Z.W.); (Z.W.); (L.C.); (Y.X.); (Z.M.); (D.K.); (D.L.)
- Shenzhen Engineering Research Center for High Resolution Light Field Display and Technology, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yiwei Xu
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China; (Z.W.); (Z.W.); (L.C.); (Y.X.); (Z.M.); (D.K.); (D.L.)
| | - Zongjun Ma
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China; (Z.W.); (Z.W.); (L.C.); (Y.X.); (Z.M.); (D.K.); (D.L.)
- Shenzhen Engineering Research Center for High Resolution Light Field Display and Technology, Southern University of Science and Technology, Shenzhen 518055, China
| | - Delai Kong
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China; (Z.W.); (Z.W.); (L.C.); (Y.X.); (Z.M.); (D.K.); (D.L.)
- Shenzhen Engineering Research Center for High Resolution Light Field Display and Technology, Southern University of Science and Technology, Shenzhen 518055, China
| | - Dan Luo
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China; (Z.W.); (Z.W.); (L.C.); (Y.X.); (Z.M.); (D.K.); (D.L.)
| | - Yan Jun Liu
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China; (Z.W.); (Z.W.); (L.C.); (Y.X.); (Z.M.); (D.K.); (D.L.)
- Shenzhen Engineering Research Center for High Resolution Light Field Display and Technology, Southern University of Science and Technology, Shenzhen 518055, China
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Khan MU, Ullah H, Honey S, Manan A, Sarfaraz M, Ullah S, Ullah M, Gul Z. SERS and Catalytic Performance with Tailored Surface Engineering of Bimetallic Au@Ag Nano-Urchins. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2022. [DOI: 10.1134/s0036024422100120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Vendamani V, Beeram R, Neethish M, Rao SN, Rao SV. Wafer-scale Silver Nanodendrites with Homogeneous Distribution of Gold Nanoparticles for Biomolecules Detection. iScience 2022; 25:104849. [PMID: 35996576 PMCID: PMC9391580 DOI: 10.1016/j.isci.2022.104849] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/15/2022] [Accepted: 07/22/2022] [Indexed: 11/24/2022] Open
Abstract
We report the fabrication and demonstrate the superior performance of robust, cost-effective, and biocompatible hierarchical Au nanoparticles (AuNPs) decorated Ag nanodendrites (AgNDs) on a Silicon platform for the trace-level detection of antibiotics (penicillin, kanamycin, and ampicillin) and DNA bases (adenine, cytosine). The hot-spot density dependence studies were explored by varying the AuNPs deposition time. These substrates’ potential and versatility were explored further through the detection of crystal violet, ammonium nitrate, and thiram. The calculated limits of detection for CV, adenine, cytosine, penicillin G, kanamycin, ampicillin, AN, and thiram were 348 pM, 2, 28, 2, 56, 4, 5, and 2 nM, respectively. The analytical enhancement factors were estimated to be ∼107 for CV, ∼106 for the biomolecules, ∼106 for the explosive molecule, and ∼106 for thiram. Furthermore, the stability of these substrates at different time intervals is being reported here with surface-enhanced Raman spectroscopy/scattering (SERS) data obtained over 120 days. Wafer-scale surface-enhanced Raman spectroscopy/scattering (SERS) substrate of Ag nanodendrites decorated with Au nanoparticles prepared Trace level detection of antibiotics achieved Versatility of these substrates demonstrated by detecting explosive, dye molecules Typical enhancement factors achieved were 105–107
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Affiliation(s)
- V.S. Vendamani
- Advanced Centre for Research in High Energy Materials (ACRHEM), University of Hyderabad, Hyderabad 500046, India
| | - Reshma Beeram
- Advanced Centre for Research in High Energy Materials (ACRHEM), University of Hyderabad, Hyderabad 500046, India
| | - M.M. Neethish
- Department of Physics, Pondicherry University, Puducherry 605014, Puducherry, India
| | - S.V.S. Nageswara Rao
- Centre for Advanced Studies in Electronics Science and Technology (CASEST), University of Hyderabad, Hyderabad 500046, Telangana, India
- School of Physics, University of Hyderabad, Hyderabad 500046, Telangana, India
| | - S. Venugopal Rao
- Advanced Centre for Research in High Energy Materials (ACRHEM), University of Hyderabad, Hyderabad 500046, India
- Corresponding author
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In Situ Identification of Unknown Crystals in Acute Kidney Injury Using Raman Spectroscopy. NANOMATERIALS 2022; 12:nano12142395. [PMID: 35889619 PMCID: PMC9323692 DOI: 10.3390/nano12142395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 07/09/2022] [Accepted: 07/11/2022] [Indexed: 11/17/2022]
Abstract
Raman spectroscopy is a well-established and powerful tool for in situ biomolecular evaluation. Type 2 crystal nephropathies are characterized by the deposition of crystalline materials in the tubular lumen, resulting in rapid onset of acute kidney injury without specific symptoms. Timely crystal identification is essential for its diagnosis, mechanism exploration and therapy, but remains challenging. This study aims to develop a Raman spectroscopy-based method to assist pathological diagnosis of type 2 crystal nephropathies. Unknown crystals in renal tissue slides from a victim suffered extensive burn injury were detected by Raman spectroscopy, and the inclusion of crystals was determined by comparing Raman data with established database. Multiple crystals were scanned to verify the reproducibility of crystal in situ. Raman data of 20 random crystals were obtained, and the distribution and uniformity of substances in crystals were investigated by Raman imaging. A mouse model was established to mimic the crystal nephropathy to verify the availability of Raman spectroscopy in frozen biopsy. All crystals on the human slides were identified to be calcium oxalate dihydrate, and the distribution and content of calcium oxalate dihydrate on a single crystal were uneven. Raman spectroscopy was further validated to be available in identification of calcium oxalate dihydrate crystals in the biopsy specimens. Here, a Raman spectroscopy-based method for in situ identification of unknown crystals in both paraffin-embedded tissues and biopsy specimens was established, providing an effective and promising method to analyze unknown crystals in tissues and assist the precise pathological diagnosis in both clinical and forensic medicine.
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Song X, Ren X, Tang D, Li X. Specific iodide effect on surface-enhanced Raman scattering for ultra-sensitive detection of organic contaminants in water. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 272:120950. [PMID: 35151171 DOI: 10.1016/j.saa.2022.120950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 12/27/2021] [Accepted: 01/22/2022] [Indexed: 06/14/2023]
Abstract
Ultra-sensitive detection of target molecules by surface-enhanced Raman scattering (SERS) is crucial in a wide range of fields but remains a great challenge. In this work, we report a simple and effective protocol for obtaining highly SERS-sensitive probe by mixing iodide with silver sol. The specific iodide effect on the SERS sensitivity is systematically investigated. It is found that, iodide can effectively promote the SERS enhancement of anionic and cationic analytes, and I- ion has a higher activating effect on SERS than that of Cl- ion. The as-prepared SERS-active substrate demonstrates excellent enhancement for rhodamine 6G with a high Raman enhancement factor of 1.8 × 108, which allows the detection limit of 1.0 × 10-13 M. Our findings in this work should be important for the developing of SERS theory and ultra-sensitive detection applications.
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Affiliation(s)
- Xinyue Song
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, State Key Lab of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Xiaohui Ren
- College of Textile and Clothing, Yancheng Institute of Technology, Yancheng 224051, China
| | - Dongyan Tang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, State Key Lab of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Xin Li
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, State Key Lab of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
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Caroleo F, Magna G, Naitana ML, Di Zazzo L, Martini R, Pizzoli F, Muduganti M, Lvova L, Mandoj F, Nardis S, Stefanelli M, Di Natale C, Paolesse R. Advances in Optical Sensors for Persistent Organic Pollutant Environmental Monitoring. SENSORS (BASEL, SWITZERLAND) 2022; 22:s22072649. [PMID: 35408267 PMCID: PMC9002670 DOI: 10.3390/s22072649] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/15/2022] [Accepted: 03/25/2022] [Indexed: 05/17/2023]
Abstract
Optical chemical sensors are widely applied in many fields of modern analytical practice, due to their simplicity in preparation and signal acquisition, low costs, and fast response time. Moreover, the construction of most modern optical sensors requires neither wire connections with the detector nor sophisticated and energy-consuming hardware, enabling wireless sensor development for a fast, in-field and online analysis. In this review, the last five years of progress (from 2017 to 2021) in the field of optical chemical sensors development for persistent organic pollutants (POPs) is provided. The operating mechanisms, the transduction principles and the types of sensing materials employed in single selective optical sensors and in multisensory systems are reviewed. The selected examples of optical sensors applications are reported to demonstrate the benefits and drawbacks of optical chemical sensor use for POPs assessment.
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Affiliation(s)
- Fabrizio Caroleo
- Department of Chemical Science and Technologies, University of Rome “Tor Vergata”, 00133 Rome, Italy; (F.C.); (G.M.); (R.M.); (F.P.); (M.M.); (F.M.); (S.N.); (M.S.); (R.P.)
| | - Gabriele Magna
- Department of Chemical Science and Technologies, University of Rome “Tor Vergata”, 00133 Rome, Italy; (F.C.); (G.M.); (R.M.); (F.P.); (M.M.); (F.M.); (S.N.); (M.S.); (R.P.)
| | - Mario Luigi Naitana
- Department of Science, Roma Tre University, Via della Vasca Navale 84, 00146 Rome, Italy;
| | - Lorena Di Zazzo
- Department of Electronic Engineering, University of Rome “Tor Vergata”, 00133 Rome, Italy; (L.D.Z.); (C.D.N.)
| | - Roberto Martini
- Department of Chemical Science and Technologies, University of Rome “Tor Vergata”, 00133 Rome, Italy; (F.C.); (G.M.); (R.M.); (F.P.); (M.M.); (F.M.); (S.N.); (M.S.); (R.P.)
| | - Francesco Pizzoli
- Department of Chemical Science and Technologies, University of Rome “Tor Vergata”, 00133 Rome, Italy; (F.C.); (G.M.); (R.M.); (F.P.); (M.M.); (F.M.); (S.N.); (M.S.); (R.P.)
| | - Mounika Muduganti
- Department of Chemical Science and Technologies, University of Rome “Tor Vergata”, 00133 Rome, Italy; (F.C.); (G.M.); (R.M.); (F.P.); (M.M.); (F.M.); (S.N.); (M.S.); (R.P.)
| | - Larisa Lvova
- Department of Chemical Science and Technologies, University of Rome “Tor Vergata”, 00133 Rome, Italy; (F.C.); (G.M.); (R.M.); (F.P.); (M.M.); (F.M.); (S.N.); (M.S.); (R.P.)
- Correspondence: ; Tel.: +39-06725974732
| | - Federica Mandoj
- Department of Chemical Science and Technologies, University of Rome “Tor Vergata”, 00133 Rome, Italy; (F.C.); (G.M.); (R.M.); (F.P.); (M.M.); (F.M.); (S.N.); (M.S.); (R.P.)
| | - Sara Nardis
- Department of Chemical Science and Technologies, University of Rome “Tor Vergata”, 00133 Rome, Italy; (F.C.); (G.M.); (R.M.); (F.P.); (M.M.); (F.M.); (S.N.); (M.S.); (R.P.)
| | - Manuela Stefanelli
- Department of Chemical Science and Technologies, University of Rome “Tor Vergata”, 00133 Rome, Italy; (F.C.); (G.M.); (R.M.); (F.P.); (M.M.); (F.M.); (S.N.); (M.S.); (R.P.)
| | - Corrado Di Natale
- Department of Electronic Engineering, University of Rome “Tor Vergata”, 00133 Rome, Italy; (L.D.Z.); (C.D.N.)
| | - Roberto Paolesse
- Department of Chemical Science and Technologies, University of Rome “Tor Vergata”, 00133 Rome, Italy; (F.C.); (G.M.); (R.M.); (F.P.); (M.M.); (F.M.); (S.N.); (M.S.); (R.P.)
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Sun J, Xue D, Shan W, Liu R, Liu R, Zhao H, Li T, Wang Z, Zhang J, Shao B. In Situ Growth Large Area Silver Nanostructure on Metal Phenolic Network Coated NAAO Film and Its SERS Sensing Application for Monofluoroacetic Acid. ACS Sens 2021; 6:2129-2135. [PMID: 34080834 DOI: 10.1021/acssensors.1c00560] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Rapid screening monofluoroacetic acid (FAcOH) is responsible for preventing chemical poisoning and food safety events. Whereas surface enhanced Raman scattering (SERS) spectra is an effective tool for detecting forbidden chemicals, it is difficult to directly detect FAcOH due to its small Raman scattering cross section as well as weak adsorption on SERS substrates. In this work, the metal phenolic supramolecular networks (MPNs, i.e., the tannic acid and Fe3+ complex) were fabricated on the commercial nanoanodic aluminum oxide film (NAAO) for assisting in situ chemical deposition highly uniform Ag nanostructure over large areas (the NAAO@AgNS). The low cost and simple fabrication process made the NAAO@AgNS a single-use consumable. For FAcOH detection, a specific derivative reaction between FAcOH and thiosalicylic acid (TSA) was introduced. By taking TSA as the Raman probe, its SERS signal attenuated constantly with the increasing amount of FAcOH. For improving quantitative accuracy, thiocyanate (SCN-) was introduced on the NAAO@AgNS as an internal standard; thus, the characteristic peak intensity ratios associated with TSA and SCN- (I1035/I2125) were fitted to the concentration of FAcOH. It was demonstrated that the SERS assay achieved good sensitivity and selection toward FAcOH with the limit of quantitation (LOD) as low as 50 nmol L-1. The NAAO@AgNS featured with highly sensitive, uniform, and consistent SERS performances could easily extend to wide SERS applications.
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Affiliation(s)
- Jiefang Sun
- Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food poisoning, Beijing Center for Disease Prevention and Control, Beijing 100013, China
| | - Dingshuai Xue
- State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
| | - Wenchong Shan
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Rui Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Runqing Liu
- School of Public Health, Capital Medical University, Beijing 100069, China
| | - Huachao Zhao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Ting Li
- Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food poisoning, Beijing Center for Disease Prevention and Control, Beijing 100013, China
| | - Zhanhui Wang
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Jing Zhang
- Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food poisoning, Beijing Center for Disease Prevention and Control, Beijing 100013, China
| | - Bing Shao
- Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food poisoning, Beijing Center for Disease Prevention and Control, Beijing 100013, China
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
- School of Public Health, Capital Medical University, Beijing 100069, China
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Cheng ZQ, Li ZW, Yao R, Xiong KW, Cheng GL, Zhou YH, Luo X, Liu ZM. Improved SERS Performance and Catalytic Activity of Dendritic Au/Ag Bimetallic Nanostructures Based on Ag Dendrites. NANOSCALE RESEARCH LETTERS 2020; 15:117. [PMID: 32449120 PMCID: PMC7246272 DOI: 10.1186/s11671-020-03347-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 05/10/2020] [Indexed: 05/16/2023]
Abstract
Bimetallic nanomaterials, which exhibit a combination of the properties associated with two different metals, have enabled innovative applications in nanoscience and nanotechnology. Here, we introduce the fabrication of dendritic Au/Ag bimetallic nanostructures for surface-enhanced Raman scattering (SERS) and catalytic applications. The dendritic Au/Ag bimetallic nanostructures were prepared by combining the electrochemical deposition and replacement reaction. The formation of Au nanoparticle shell on the surface of Ag dendrites greatly improves the stability of dendritic nanostructures, followed by a significant SERS enhancement. In addition, these dendritic Au/Ag bimetallic nanostructures are extremely efficient in degrading 4-nitrophenol (4-NP) compared with the initial dendritic Ag nanostructures. These experimental results indicate the great potential of the dendritic Au/Ag bimetallic nanostructures for the development of excellent SERS substrate and highly efficient catalysts.
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Affiliation(s)
- Zi-Qiang Cheng
- Department of Applied Physics, School of Science, East China Jiaotong University, Nanchang, 330013 People’s Republic of China
- Materials Interfaces Center, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055 People’s Republic of China
| | - Zhi-Wen Li
- Department of Applied Physics, School of Science, East China Jiaotong University, Nanchang, 330013 People’s Republic of China
| | - Rui Yao
- Department of Applied Physics, School of Science, East China Jiaotong University, Nanchang, 330013 People’s Republic of China
| | - Kuang-Wei Xiong
- Department of Applied Physics, School of Science, East China Jiaotong University, Nanchang, 330013 People’s Republic of China
| | - Guang-Ling Cheng
- Department of Applied Physics, School of Science, East China Jiaotong University, Nanchang, 330013 People’s Republic of China
| | - Yan-Hong Zhou
- Department of Applied Physics, School of Science, East China Jiaotong University, Nanchang, 330013 People’s Republic of China
| | - Xin Luo
- Department of Applied Physics, School of Science, East China Jiaotong University, Nanchang, 330013 People’s Republic of China
| | - Zhi-Min Liu
- Department of Applied Physics, School of Science, East China Jiaotong University, Nanchang, 330013 People’s Republic of China
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Wang JR, Xia C, Yang L, Li YF, Li CM, Huang CZ. DNA Nanofirecrackers Assembled through Hybridization Chain Reaction for Ultrasensitive SERS Immunoassay of Prostate Specific Antigen. Anal Chem 2020; 92:4046-4052. [PMID: 32048509 DOI: 10.1021/acs.analchem.9b05648] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Isothermal nucleic acid amplification technology has been widely adopted for analytical chemistry with the purpose of sensitivity improvement. Herein we present an ultrasensitive concatenated hybridization chain reaction (C-HCR) based surface-enhanced Raman scattering (SERS) immunoassay by forming antibody-antigen-aptamer heterosandwich structures with the model analyte of total prostate specific antigens (tPSA). In the C-HCR, two HCRs, one proceeds with two hairpins and the other with four biotin-modified hairpins, are coupled, making the formation of DNA nanofirecrackers with the lengths longer than 200 nm and more than four hundred million binding sites of streptavidin modified enzymes. These types of DNA nanofirecrackers through the aptamer encoded linker strand to form heterosandwich structures could provide a general signal application platform such as enzyme catalysis with high amplification efficiency. As a proof of concept, the Au@Ag core-shell nanostructure based SERS immunoassay with excellent signal amplification has been developed by employing the streptavidin modified alkaline phosphatase (SA-ALP) through its catalysis of 2-phospho-l-ascorbic acid trisodium salt (AAP) to form Au@Ag core-shell nanostructures via the formation of ascorbic acid (AA) to reduce AgNO3 and deposition of silver element on gold nanorods (AuNRs). The newly developed method has a detection limit as low as 0.94 fg/mL and has successfully achieved the detection of serum samples from clinical patients, which was consistent with the clinical test results, showing that this C-HCR strategy to form DNA nanofirecrackers has great potential in clinical applications.
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Affiliation(s)
- Jia Ru Wang
- Key Laboratory of Luminescent and Real-Time Analytical System (Southwest University), Chongqing Science and Technology Bureau, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Chang Xia
- Key Laboratory of Luminescent and Real-Time Analytical System (Southwest University), Chongqing Science and Technology Bureau, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Lin Yang
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Yuan Fang Li
- Key Laboratory of Luminescent and Real-Time Analytical System (Southwest University), Chongqing Science and Technology Bureau, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Chun Mei Li
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Cheng Zhi Huang
- Key Laboratory of Luminescent and Real-Time Analytical System (Southwest University), Chongqing Science and Technology Bureau, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China.,College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
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Wang M, Wang Y, Qiao Y, Wei M, Gao L, Wang L, Yan Y, Li H. High-sensitive imprinted membranes based on surface-enhanced Raman scattering for selective detection of antibiotics in water. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 222:117116. [PMID: 31181508 DOI: 10.1016/j.saa.2019.05.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 05/10/2019] [Accepted: 05/10/2019] [Indexed: 06/09/2023]
Abstract
Poly(vinylidene fluoride) (PVDF) is known as one of the widely used membrane separation materials with excellent physical and chemical properties. In this work, we combine surface-enhanced Raman scattering (SERS) detection technology, membrane separation technology and molecular imprinting technology (MIT) to improve sensitivity and selectivity for selective detection of the enrofloxacin hydrochloride in water. In this investigation, PVDF membranes were used as the support materials and different experiment parameters were investigated to obtain the best property. Meanwhile, the Ag nanoparticles (Ag NPs) modified by 3-methacryloxypropyltrimethoxysilane (KH-570) were used as the SERS substrates and they were uniformly dispersed on the surface of the membrane. Finally, Ag-based SERS imprinted membranes (ASIMs) with specific recognition property were successfully prepared with enrofloxacin hydrochloride as the template molecule, acrylamide (AM) as the functional monomer, ethylene glycol dimethacrylate (EGDMA) as the cross-linker agent and 2,2'-azobis(2-methylpropionitrile) (AIBN) as the initiator by a facile and versatile precipitation polymerization strategy. Under the optimal condition, it was presented good linear relationship (R2 = 0.994) between the Raman signal (at 1390.8 cm-1) and the concentration (10-3 mol·L-1-10-7 mol·L-1) of the templates, and the limit of detection was determined as 10-7 mol·L-1. The morphology and characters were investigated and the results proved that the SERS imprinted membranes could be used into the selective detection of antibiotics and it provided a novel approach of antibiotics detection.
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Affiliation(s)
- Mingchao Wang
- College of Physics, Jilin Normal University, Siping 136000, China
| | - Yan Wang
- College of Chemistry, Jilin Normal University, Siping 136000, China
| | - Yu Qiao
- Key Laboratory of Preparation and Applications of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, Changchun 130103, China; Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
| | - Maobin Wei
- Key Laboratory of Preparation and Applications of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, Changchun 130103, China; Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
| | - Lin Gao
- Key Laboratory of Preparation and Applications of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, Changchun 130103, China; College of Environmental Science and Engineering, Jilin Normal University, Siping 136000, China; Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
| | - Liang Wang
- Key Laboratory of Preparation and Applications of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, Changchun 130103, China; Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China
| | - Yongsheng Yan
- Key Laboratory of Preparation and Applications of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, Changchun 130103, China; Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China.
| | - Hongji Li
- Key Laboratory of Preparation and Applications of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, Changchun 130103, China; College of Environmental Science and Engineering, Jilin Normal University, Siping 136000, China; Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China.
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11
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Nsibande S, Montaseri H, Forbes P. Advances in the application of nanomaterial-based sensors for detection of polycyclic aromatic hydrocarbons in aquatic systems. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.03.029] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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12
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Wei W, Yao Y, Zhao Q, Xu Z, Wang Q, Zhang Z, Gao Y. Oxygen defect-induced localized surface plasmon resonance at the WO 3-x quantum dot/silver nanowire interface: SERS and photocatalysis. NANOSCALE 2019; 11:5535-5547. [PMID: 30860537 DOI: 10.1039/c9nr01059a] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Oxygen defects play a crucial role in a variety of functional transition metal oxides, ranging from photocatalytic materials to photoelectric devices. Tungsten oxide (WO3-x) is a type of transition metal oxide that has rich substoichiometric compositions and possesses oxygen defects. These oxygen defects determine the photon-electron interactions in the WO3-x structures. Therein, WO3-x quantum dots (QDs) exhibit fast carrier-transport for photon-electron interactions due to their strong quantum-size effects. Here, we report the use of non-stoichiometric WO3-x QDs, as a model material, in combination with silver nanowires (Ag NWs) to study photon-electron interactions on the nanoscale. We demonstrate that the incident photon-to-electron conversion efficiency can be increased by 8.5% and that the dye photodegradation performance was improved by 40% in a WO2.72 QD@Ag NW (WO2.72 QDs supported on AgNWs) composite compared to those of individual WO2.72 QDs under simulated AM 1.5G light. Furthermore, the WO3-x QD@Ag NW composite exhibits both photocatalytic activity and surface-enhanced Raman scattering (SERS) features, and the WO3-x QDs can be switched between a "photocatalytic state" and a "SERS state" by changing the stoichiometric ratio. The synergistic effects are ascribed to the "plasmonic state" of WO2.72 QDs upon light irradiation. This work provides new insight into the design of highly efficient transition metal oxide/plasmonic metal nanocomposites for photoelectric devices.
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Affiliation(s)
- Wei Wei
- School of Materials Science and Engineering, Shanghai University, Shanghai 200444, People's Republic of China.
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13
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Formation of Interstitial Hot-Spots Using the Reduced Gap-Size between Plasmonic Microbeads Pattern for Surface-Enhanced Raman Scattering Analysis. SENSORS 2019; 19:s19051046. [PMID: 30823667 PMCID: PMC6427690 DOI: 10.3390/s19051046] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 02/21/2019] [Accepted: 02/21/2019] [Indexed: 12/28/2022]
Abstract
To achieve an effective surface-enhanced Raman scattering (SERS) sensor with periodically distributed "hot spots" on wafer-scale substrates, we propose a hybrid approach combining physical nano-imprint lithography and a chemical deposition method to form a silver microbead array. Nano-imprint lithography (NIL) can lead to mass-production and high throughput, but is not appropriate for generating strong "hot-spots." However, when we apply electrochemical deposition to an NIL substrate and the reaction time was increased to 45 s, periodical "hot-spots" between the microbeads were generated on the substrates. It contributed to increasing the enhancement factor (EF) and lowering the detection limit of the substrates to 4.40 × 10⁶ and 1.0 × 10-11 M, respectively. In addition, this synthetic method exhibited good substrate-to-substrate reproducibility (RSD < 9.4%). Our research suggests a new opportunity for expanding the SERS application.
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14
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Mohammadi A, Nicholls DL, Docoslis A. Improving the Surface-Enhanced Raman Scattering Performance of Silver Nanodendritic Substrates with Sprayed-On Graphene-Based Coatings. SENSORS (BASEL, SWITZERLAND) 2018; 18:E3404. [PMID: 30314312 PMCID: PMC6209902 DOI: 10.3390/s18103404] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 10/03/2018] [Accepted: 10/06/2018] [Indexed: 01/16/2023]
Abstract
This study examines the improvements in surface-enhanced Raman scattering (SERS) performance achieved when silver nanodendritic structures are coated with various graphene-based materials, namely graphene oxide (GO), reduced graphene oxide (rGO), and graphene nanoplatelets (GNPs). The tests are performed on our unique SERS-active substrates, prepared on the surface of planar microelectrode chips using an electric field-guided Ag nanoparticle assembly process. The graphene-based materials are introduced into the substrate by means of an in-house spray-coating technique. The SERS enhancement effect of each coating is examined as a function of spray nozzle passes (N) and optimal values are identified for each coating type. The enhancements found for GO, rGO, and GNP (6⁻9 graphene layers thick) coatings are 2.3 (N = 25), 2.5 (N = 5), and 1.6 (N = 1), respectively. Additionally, in comparison with their uncoated counterparts, substrates coated with rGO (N = 5) are shown to enhance the intensity of the methamphetamine (5 ppb) spectrum in artificial saliva by approximately 3-fold. Overall, it can be concluded that the introduction of GO or rGO to the SERS substrate using spray-coating, a simple and also scalable method, can produce substantial SERS performance enhancement.
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Affiliation(s)
- Aida Mohammadi
- Department of Chemical Engineering, Queen's University, Kingston, ON K7L3N6, Canada.
| | | | - Aristides Docoslis
- Department of Chemical Engineering, Queen's University, Kingston, ON K7L3N6, Canada.
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15
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Tong Q, Wang W, Fan Y, Dong L. Recent progressive preparations and applications of silver-based SERS substrates. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2018.06.018] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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16
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Qu LL, Wang N, Zhu G, Yadav TP, Shuai X, Bao D, Yang G, Li D, Li H. Facile fabrication of ternary TiO 2-gold nanoparticle-graphene oxide nanocomposites for recyclable surface enhanced Raman scattering. Talanta 2018; 186:265-271. [PMID: 29784359 DOI: 10.1016/j.talanta.2018.04.062] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 04/17/2018] [Accepted: 04/20/2018] [Indexed: 11/26/2022]
Abstract
A bi-functional ternary nanocomposite was developed by decorating TiO2 and gold nanoparticles on the reduced graphene oxide nanosheets (TiO2-Au-rGO) for recyclable surface enhanced Raman scattering (SERS) detection. TiO2-Au-rGO nanocomposites have been shown to demonstrate the superior SERS performances, which can be used for highly sensitive detection of rhodamine 6 G with a limit of detection of 1.2 × 10-10 M. Subsequently, the surface can be cleaned automatically by the photocatalytic degradation of the adsorbed analytes into inorganic small molecules under visible light irradiation. This can be attributed to the excellent photocatalytic degradation ability, leading to a recyclable SERS application. After being used four times, their excellent SERS and catalytic performances can still be retained. These results suggest that the TiO2-Au-rGO nanocomposites can provide a new strategy for fabricating recyclable SERS substrates, which are highly desirable for SERS practical application.
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Affiliation(s)
- Lu-Lu Qu
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, PR China
| | - Na Wang
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, PR China
| | - Gen Zhu
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, PR China
| | - T P Yadav
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX 77005, USA
| | - Xinting Shuai
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX 77005, USA
| | - Dandan Bao
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, PR China
| | - Guohai Yang
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, PR China
| | - Dawei Li
- Shanghai Key Laboratory of Functional Materials Chemistry & College of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China.
| | - Haitao Li
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, PR China.
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17
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Lee T, Wi JS, Oh A, Na HK, Lee J, Lee K, Lee TG, Haam S. Highly robust, uniform and ultra-sensitive surface-enhanced Raman scattering substrates for microRNA detection fabricated by using silver nanostructures grown in gold nanobowls. NANOSCALE 2018; 10:3680-3687. [PMID: 29323386 DOI: 10.1039/c7nr08066b] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Highly sensitive and reproducible surface enhanced Raman spectroscopy (SERS) requires not only a nanometer-level structural control, but also superb uniformity across the SERS substrate for practical imaging and sensing applications. However, in the past, increased reproducibility of the SERS signal was incompatible with increased SERS sensitivity. This work presents multiple silver nanocrystals inside periodically arrayed gold nanobowls (SGBs) via an electrochemical reaction at an overpotential of -3.0 V (vs. Ag/AgCl). The gaps between the silver nanocrystals serve as hot spots for SERS enhancement, and the evenly distributed gold nanobowls lead to a high device-to-device signal uniformity. The SGBs on the large sample surface exhibit an excellent SERS enhancement factor of up to 4.80 × 109, with excellent signal uniformity (RSD < 8.0 ± 2.5%). Furthermore, the SGBs can detect specific microRNA (miR-34a), which plays a widely acknowledged role as biomarkers in diagnosis and treatment of diseases. Although the small size and low abundance of miR-34a in total RNA samples hinder their detection, by utilizing the advantages of SGBs in SERS sensing, reliable and direct detection of human gastric cancer cells has been successfully accomplished.
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Affiliation(s)
- Taeksu Lee
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 120-749, Republic of Korea.
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18
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Karuppasamy KR, Devasenathipathy R, Wang SF. A glassy carbon electrode modified with graphene oxide decorated silver phosphate nanodentrites for amperometric determination of dissolved hydrazine. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2237-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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19
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Das R, Vecitis CD, Schulze A, Cao B, Ismail AF, Lu X, Chen J, Ramakrishna S. Recent advances in nanomaterials for water protection and monitoring. Chem Soc Rev 2017; 46:6946-7020. [DOI: 10.1039/c6cs00921b] [Citation(s) in RCA: 353] [Impact Index Per Article: 50.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Nanomaterials (NMs) for adsorption, catalysis, separation, and disinfection are scrutinized. NMs-based sensor technologies and environmental transformations of NMs are highlighted.
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Affiliation(s)
- Rasel Das
- Leibniz Institute of Surface Modification
- D-04318 Leipzig
- Germany
| | - Chad D. Vecitis
- School of Engineering and Applied Sciences
- Harvard University
- Cambridge
- USA
| | - Agnes Schulze
- Leibniz Institute of Surface Modification
- D-04318 Leipzig
- Germany
| | - Bin Cao
- School of Civil and Environmental Engineering
- Nanyang Technological University
- Singapore
| | - Ahmad Fauzi Ismail
- Advanced Membrane Technology Research Centre
- Universiti Teknologi Malaysia
- 81310 Johor
- Malaysia
| | - Xianbo Lu
- CAS Key Laboratory of Separation Science for Analytical Chemistry
- Dalian Institute of Chemical Physics
- Dalian 116023
- China
| | - Jiping Chen
- CAS Key Laboratory of Separation Science for Analytical Chemistry
- Dalian Institute of Chemical Physics
- Dalian 116023
- China
| | - Seeram Ramakrishna
- Centre for Nanofibers and Nanotechnology
- Department of Mechanical Engineering
- National University of Singapore
- Singapore
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20
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Li H, Wang X, Wang Z, Jiang J, Qiao Y, Wei M, Yan Y, Li C. A high-performance SERS-imprinted sensor doped with silver particles of different surface morphologies for selective detection of pyrethroids in rivers. NEW J CHEM 2017. [DOI: 10.1039/c7nj02811c] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Ag-MIPs were prepared through a multistep procedure, in which MPS and LC were selected as the template molecules. These materials could selectively rebind the templates and could be detected using Raman spectroscopy.
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Affiliation(s)
- Hongji Li
- Institute of Green Chemistry and Chemical Technology
- College of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- China
| | - Xiaonan Wang
- College of Chemistry
- Jilin Normal University
- Siping
- China
| | - Zirun Wang
- College of Chemistry
- Jilin Normal University
- Siping
- China
| | - Jiaqi Jiang
- College of Chemistry
- Jilin Normal University
- Siping
- China
| | - Yu Qiao
- Key Laboratory of Preparation and Applications of Environmental Friendly Materials (Jilin Normal University)
- Ministry of Education
- Changchun
- China
| | - Maobin Wei
- College of Physics
- Jilin Normal University
- Siping
- China
| | - Yongsheng Yan
- Institute of Green Chemistry and Chemical Technology
- College of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- China
| | - Chunxiang Li
- Institute of Green Chemistry and Chemical Technology
- College of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- China
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21
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Nabeela K, Thomas RT, Nair JB, Maiti KK, Warrier KGK, Pillai S. TEMPO-Oxidized Nanocellulose Fiber-Directed Stable Aqueous Suspension of Plasmonic Flower-like Silver Nanoconstructs for Ultra-Trace Detection of Analytes. ACS APPLIED MATERIALS & INTERFACES 2016; 8:29242-29251. [PMID: 27709880 DOI: 10.1021/acsami.6b07295] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
The synthesis of shape-tuned silver (Ag) nanostructures with high plasmon characteristics has become of significant importance in in vitro diagnostic applications. Herein, we report a simple aqueous synthetic route using 2,2,6,6-tetramethylpiperidine-1-oxyl-oxidized nanocellulose fibers (T-NCFs) and trisodium citrate (TSC) that results in anisotropically grown flower-like Ag nanoconstructs (AgNFs). A detailed investigation of the concentration and sequence of the addition of reactants in the formation of these anisotropic Ag structures is presented. Our experimental results show that the mechanism underlying the formation of AgNFs is facilitated by the synergistic action of T-NCFs and TSC on the directional growth of Ag nuclei during the primary stage, which later develop into a flower-like structure by the ripening of larger particles consuming smaller Ag particles. As a result the final structure comprises flower-like morphology over which several smaller Ag particles (of size <10 nm) are adhered. The aqueous AgNF colloid exhibits high stability (ζ = -69.4 mV) and long shelf-life at neutral pH (>4 months) by the efficient capping action of T-NCFs. Further, an as-synthesized nanoconstructs shows excellent surface-enhanced Raman scattering activity, which enables ultrasensitive detection of p-aminothiophenol with a concentration down to 10 aM (10-17 M) in a reproducible way. This biosupported synthesis of stable aqueous colloids of AgNF may find potential applications as a biomedical sensing platform for the trace level detection of analyte molecules.
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Affiliation(s)
- Kallayi Nabeela
- Academy of Scientific and Innovative Research , New Delhi 110 001, India
| | | | - Jyothi B Nair
- Academy of Scientific and Innovative Research , New Delhi 110 001, India
| | | | | | - Saju Pillai
- Academy of Scientific and Innovative Research , New Delhi 110 001, India
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22
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Qu LL, Liu YY, Liu MK, Yang GH, Li DW, Li HT. Highly Reproducible Ag NPs/CNT-Intercalated GO Membranes for Enrichment and SERS Detection of Antibiotics. ACS APPLIED MATERIALS & INTERFACES 2016; 8:28180-28186. [PMID: 27670355 DOI: 10.1021/acsami.6b08790] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The increasing pollution of aquatic environments by antibiotics makes it necessary to develop efficient enrichment and sensitive detection methods for environmental antibiotics monitoring. In this work, silver nanoparticles and carbon nanotube-intercalated graphene oxide laminar membranes (Ag NPs/CNT-GO membranes) were successfully prepared for enrichment and surface-enhanced Raman scattering (SERS) detection of antibiotics. The prepared Ag NPs/CNT-GO membranes exhibited a high enrichment ability because of the π-π stacking and electrostatic interactions of GO toward antibiotic molecules, which enhanced the sensitivity of SERS measurements and enabled the antibiotics to be determined at sub-nM concentrations. In addition, the nanochannels created by the intercalation of CNTs into GO layers resulted in an 8-fold enhancement in the water permeance of Ag NPs/CNT-GO membranes compared to that of pure GO membranes. More importantly, the Ag NPs/CNT-GO membranes exhibited high reproducibility and long-term stability. The spot-to-spot variation in SERS intensity was less than 15%, and the SERS performance was maintained for at least 70 days. The Ag NPs/CNT-GO membranes were also used for SERS detection of antibiotics in real samples; the results showed that the characteristic peaks of antibiotics were obviously recognizable. Thus, the sensitive SERS detection of antibiotics based on Ag NPs/CNT-GO offers great potential for practical applications in environmental analysis.
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Affiliation(s)
- Lu Lu Qu
- School of Chemistry and Chemical Engineering, Jiangsu Normal University , Xuzhou, Jiangsu 221116, P. R. China
| | - Ying-Ya Liu
- Shanghai Key Laboratory of Functional Materials Chemistry & College of Chemistry and Molecular Engineering, East China University of Science and Technology , Shanghai 200237, P. R. China
| | - Ming-Kai Liu
- School of Chemistry and Chemical Engineering, Jiangsu Normal University , Xuzhou, Jiangsu 221116, P. R. China
| | - Guo-Hai Yang
- School of Chemistry and Chemical Engineering, Jiangsu Normal University , Xuzhou, Jiangsu 221116, P. R. China
| | - Da-Wei Li
- Shanghai Key Laboratory of Functional Materials Chemistry & College of Chemistry and Molecular Engineering, East China University of Science and Technology , Shanghai 200237, P. R. China
| | - Hai-Tao Li
- School of Chemistry and Chemical Engineering, Jiangsu Normal University , Xuzhou, Jiangsu 221116, P. R. China
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23
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Pal A, Khajornrungruang P, Netzband C, Alety S, Babu SV. Observation of the formation of anisotropic silver microstructures by evanescent wave and electron microscopy. NANOTECHNOLOGY 2016; 27:075708. [PMID: 26789822 DOI: 10.1088/0957-4484/27/7/075708] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Using a well-known galvanic displacement reaction, ∼25-40 μm long silver ribbons grown after mixing ∼50 nm copper particles with AgNO3 solution were observed as a function of Ag(+) concentration and their growth was characterized in real-time and in situ by evanescent wave (EW) microscopy. At low Ag(+) concentration, chain-like structures consisting of both Ag and Cu were observed. When the sequence of mixing these two reactants was reversed, different Ag microstructures (platelets and dendrites) were formed and were also characterized by EW microscopy. Dependence of the morphology of all these microstructures on silver ion concentration was determined by EW microscopy in conjunction with scanning and transmission electron microscopy.
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Affiliation(s)
- Angshuman Pal
- Center of Advance Materials Processing, Clarkson University Potsdam, NY 13676, USA
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24
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Gu HX, Hu K, Li DW, Long YT. SERS detection of polycyclic aromatic hydrocarbons using a bare gold nanoparticles coupled film system. Analyst 2016; 141:4359-65. [DOI: 10.1039/c6an00319b] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A facile approach based on a bare gold nanoparticles (Au NPs) coupled film system as the surface-enhanced Raman scattering (SERS) substrate was developed for the effective detection of polycyclic aromatic hydrocarbons (PAHs).
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Affiliation(s)
- Hai-Xin Gu
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
- Shanghai Fire Research Institute of Ministry of Public Security
| | - Kai Hu
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Da-Wei Li
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Yi-Tao Long
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
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25
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Reversibly Switching Silver Hierarchical Structures via Reaction Kinetics. Sci Rep 2015; 5:14942. [PMID: 26442867 PMCID: PMC4595744 DOI: 10.1038/srep14942] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Accepted: 09/07/2015] [Indexed: 11/09/2022] Open
Abstract
Here we report a study on controllable synthesis of hierarchical silver structures via regulating reaction kinetics. Silver particles with various morphologies are synthesized by a solution-based reduction approach at the addition of amino acids. The amino acid is used to coordinate with silver ions to slow down the reduction of silver ions. With the increase of glycine concentration, the morphologies of silver particles switch from dendrites, to flowers and to compacted spheres, which is attributed to the decrease of reaction rate as a result of the coordination. Three more amino acids are examined and confirms the role of reaction kinetic in shaping silver particles. Furthermore, by increasing the concentration of the reductant, the silver morphologies change from compact spheres to loose flowers as a result of the increase of reaction rate. Therefore the silver hierarchical structure can be reversibly switched by reaction kinetics. The silver particles synthesized are tested for surface enhanced Raman scattering (SERS) property and the dendritic particles present a remarkable SERS activity. This study shows that reaction kinetics is a powerful tool to tune hierarchical structures of silver particles, which is expected to be transferable to other material systems.
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26
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Gu HX, Li DW, Xue L, Zhang YF, Long YT. A portable microcolumn based on silver nanoparticle functionalized glass fibers and its SERS application. Analyst 2015; 140:7934-8. [DOI: 10.1039/c5an01517k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We presented a facile method for the preparation of a portable detection column integrated with silver nanoparticle (Ag NP) functionalized glass fibers for surface-enhanced Raman scattering (SERS).
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Affiliation(s)
- Hai-Xin Gu
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
- Shanghai Fire Research Institute of Ministry of Public Security
| | - Da-Wei Li
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Lin Xue
- Shanghai Fire Research Institute of Ministry of Public Security
- Shanghai 200438
- P. R. China
| | - Yong-Feng Zhang
- Shanghai Fire Research Institute of Ministry of Public Security
- Shanghai 200438
- P. R. China
| | - Yi-Tao Long
- Key Laboratory for Advanced Materials and Department of Chemistry
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
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