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You R, Li M, Liu W, Zhang S, Xiao S, Xiao X, Lin Z, Lu Y. Green in situ immobilisation of gold nanoparticles on bacterial nanocellulose membranes using Tannic acid and its detection of Fe 3. Colloids Surf B Biointerfaces 2023; 230:113485. [PMID: 37556884 DOI: 10.1016/j.colsurfb.2023.113485] [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: 04/03/2023] [Revised: 07/24/2023] [Accepted: 07/29/2023] [Indexed: 08/11/2023]
Abstract
Oxidative stress is one of the factors that promote melanogenesis. Trivalent iron ions play a key role in regulating the iron-catalysed oxidative stress response. A novel SERS flexible membrane sensor based on tannic acid with good sensitivity and uniformity was prepared by green in situ reduction of gold nanoparticles on bacterial cellulose membrane(BCM)with a simple and highly selective method to detect Fe3+. Under alkaline conditions, Fe3+ is adsorbed on the BCM-TA@Au NPs flexible membrane by tannic acid (TA) through chelation, thus enabling the detection of Fe3+. Furthermore, this simple detection system has a wide linear detection range and high sensitivity to effortlessly evaluate Fe3+ at concentrations up to 10-7 M. More importantly, the proposed SERS flexible substrate performed well in determining Fe3+ concentrations in B16 melanocytes, providing new insights into the factors affecting the melanin synthesis pathway and providing a potential biomarker for melanoma treatment.
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Affiliation(s)
- Ruiyun You
- College of Chemistry and Materials Science, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Engineering Research Center of Industrial Biocatalysis, Fujian Province Higher Education Institutes, Fujian Key Laboratory of Polymer Materials, Fujian Normal University, Fuzhou 350007, China
| | - Minling Li
- College of Chemistry and Materials Science, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Engineering Research Center of Industrial Biocatalysis, Fujian Province Higher Education Institutes, Fujian Key Laboratory of Polymer Materials, Fujian Normal University, Fuzhou 350007, China
| | - Wenting Liu
- College of Chemistry and Materials Science, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Engineering Research Center of Industrial Biocatalysis, Fujian Province Higher Education Institutes, Fujian Key Laboratory of Polymer Materials, Fujian Normal University, Fuzhou 350007, China
| | - Shitong Zhang
- College of Chemistry and Materials Science, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Engineering Research Center of Industrial Biocatalysis, Fujian Province Higher Education Institutes, Fujian Key Laboratory of Polymer Materials, Fujian Normal University, Fuzhou 350007, China
| | - Siying Xiao
- College of Chemistry and Materials Science, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Engineering Research Center of Industrial Biocatalysis, Fujian Province Higher Education Institutes, Fujian Key Laboratory of Polymer Materials, Fujian Normal University, Fuzhou 350007, China
| | - Xiufeng Xiao
- College of Chemistry and Materials Science, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Engineering Research Center of Industrial Biocatalysis, Fujian Province Higher Education Institutes, Fujian Key Laboratory of Polymer Materials, Fujian Normal University, Fuzhou 350007, China
| | - Zheng Lin
- College of Life Science, Fujian Normal University, Fuzhou 350117, China.
| | - Yudong Lu
- College of Chemistry and Materials Science, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Engineering Research Center of Industrial Biocatalysis, Fujian Province Higher Education Institutes, Fujian Key Laboratory of Polymer Materials, Fujian Normal University, Fuzhou 350007, China.
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2
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Sun C, Ye L, Wang L, Hu Z, Ding J. Surface-enhanced Raman scattering of a gold core-silver shell-sponge substrate for detection of thiram and diquat. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:4645-4655. [PMID: 37665316 DOI: 10.1039/d3ay00922j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/05/2023]
Abstract
Aiming at the difficulty of traditional pesticide sampling, a low-cost and convenient flexible surface enhanced Raman scattering (SERS) gold core-silver shell-sponge (Au-Ag-sponge) substrate was synthesized by chemical reduction. The SERS substrate consisted of Au-AgNPs and a melamine sponge. The sponge had a rich open pore structure, which could well "capture" Au-AgNPs, generating a large number of "hot spots". The SERS enhancement activity of the flexible substrate was characterized with rhodamine 6G (R6G) Raman probe molecules. The substrate showed good activity to 10-12 M rhodamine 6G with an enhancement factor (EF) of 7.72 × 106. Applying this substrate to the qualitative and quantitative detection of pesticide residues, the results showed that the Raman intensity was well related to the concentration of pesticide solution with the range of 0.1-10 mg L-1 of thiram and 1-10 mg L-1 of diquat. Furthermore, the substrate was analyzed by finite difference time domain (FDTD) simulation and the results were in good agreement with the experimental results. The reason for the difference in Raman signals of pesticide molecules on the same substrate was the different binding modes of Au-AgNPs on the sponge. Finally, we pointed out the advantages of flexible substrates in the field of pesticide residues, as well as future opportunities and challenges.
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Affiliation(s)
- Chao Sun
- College of Intelligent Manufacturing, Jianghan University, Hubei, Wuhan, China.
| | - Li Ye
- College of Intelligent Manufacturing, Jianghan University, Hubei, Wuhan, China.
| | - Lizheng Wang
- College of Intelligent Manufacturing, Jianghan University, Hubei, Wuhan, China.
| | - Zhiming Hu
- College of Intelligent Manufacturing, Jianghan University, Hubei, Wuhan, China.
| | - Jianjun Ding
- College of Intelligent Manufacturing, Jianghan University, Hubei, Wuhan, China.
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3
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Diehl F, Hageneder S, Fossati S, Auer SK, Dostalek J, Jonas U. Plasmonic nanomaterials with responsive polymer hydrogels for sensing and actuation. Chem Soc Rev 2022; 51:3926-3963. [PMID: 35471654 PMCID: PMC9126188 DOI: 10.1039/d1cs01083b] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Indexed: 12/25/2022]
Abstract
Plasmonic nanomaterials have become an integral part of numerous technologies, where they provide important functionalities spanning from extraction and harvesting of light in thin film optical devices to probing of molecular species and their interactions on biochip surfaces. More recently, we witness increasing research efforts devoted to a new class of plasmonic nanomaterials that allow for on-demand tuning of their properties by combining metallic nanostructures and responsive hydrogels. This review addresses this recently emerged vibrant field, which holds potential to expand the spectrum of possible applications and deliver functions that cannot be achieved by separate research in each of the respective fields. It aims at providing an overview of key principles, design rules, and current implementations of both responsive hydrogels and metallic nanostructures. We discuss important aspects that capitalize on the combination of responsive polymer networks with plasmonic nanostructures to perform rapid mechanical actuation and actively controlled nanoscale confinement of light associated with resonant amplification of its intensity. The latest advances towards the implementation of such responsive plasmonic nanomaterials are presented, particularly covering the field of plasmonic biosensing that utilizes refractometric measurements as well as plasmon-enhanced optical spectroscopy readout, optically driven miniature soft actuators, and light-fueled micromachines operating in an environment resembling biological systems.
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Affiliation(s)
- Fiona Diehl
- Macromolecular Chemistry, Department of Chemistry and Biology, University of Siegen, Adolf Reichwein-Straße 2, 57074 Siegen, Germany.
| | - Simone Hageneder
- Biosensor Technologies, AIT-Austrian Institute of Technology GmbH, Konrad-Lorenz-Straße 24, 3430 Tulln an der Donau, Austria.
| | - Stefan Fossati
- Biosensor Technologies, AIT-Austrian Institute of Technology GmbH, Konrad-Lorenz-Straße 24, 3430 Tulln an der Donau, Austria.
| | - Simone K Auer
- Biosensor Technologies, AIT-Austrian Institute of Technology GmbH, Konrad-Lorenz-Straße 24, 3430 Tulln an der Donau, Austria.
- CEST Competence Center for Electrochemical Surface Technologies, 3430 Tulln an der Donau, Austria
| | - Jakub Dostalek
- Biosensor Technologies, AIT-Austrian Institute of Technology GmbH, Konrad-Lorenz-Straße 24, 3430 Tulln an der Donau, Austria.
- FZU-Institute of Physics, Czech Academy of Sciences, Na Slovance 2, Prague 182 21, Czech Republic
| | - Ulrich Jonas
- Macromolecular Chemistry, Department of Chemistry and Biology, University of Siegen, Adolf Reichwein-Straße 2, 57074 Siegen, Germany.
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4
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Yang J, Wang K, Lv Z, Li W, Luo K, Cao Z. Facile Preparation and Dye Adsorption Performance of Poly( N-isopropylacrylamide- co-acrylic acid)/Molybdenum Disulfide Composite Hydrogels. ACS OMEGA 2021; 6:28285-28296. [PMID: 34723025 PMCID: PMC8552478 DOI: 10.1021/acsomega.1c04433] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 10/05/2021] [Indexed: 05/06/2023]
Abstract
Using N-isopropylacrylamide (NIPAM) and acrylic acid (AAc) as monomers, N,N'-methylenebisacrylamide (MBA) as a cross-linking agent, and molybdenum disulfide (MoS2) as functional particles, a P(NIPAM-co-AAc)/MoS2 composite hydrogel was prepared by free radical polymerization initiated by ultraviolet light. The results of Fourier transform infrared spectroscopy, Raman spectroscopy, and scanning electron microscopy show that MoS2 has been successfully introduced into the P(NIPAM-co-AAc) system, and the obtained composite hydrogel has a porous network structure. Studies on the swelling property and dye adsorption performance show that the addition of MoS2 can increase the swelling ratio of P(NIPAM-co-AAc) hydrogels to a certain extent and can significantly improve the ability of the P(NIPAM-co-AAc) hydrogel to adsorb methylene blue (MB). The adsorption process of MB by the composite hydrogels conforms to the pseudo-second-order kinetics and the Langmuir isotherm adsorption models. The estimated equilibrium adsorption capacity (Q m) using the Langmuir isotherm model can reach 1258 mg/g, mainly due to the electrostatic interaction between the negatively charged groups -COO- and MoS2 particles on the network structure and the positively charged dye MB. The adsorption of MB by P(NIPAM-co-AAc)/MoS2 composite hydrogels depends on the temperature during adsorption. Compared with room temperature, a high temperature of 40 °C above the poly(N-isopropylacrylamide) (PNIPAM) phase transition temperature (∼32 °C) leads to a decreased adsorption capacity of the P(NIPAM-co-AAc)/MoS2 composite hydrogel for MB due to the enhanced hydrophobic properties of the network structure and the decrease of the swelling ratio. The prepared hydrogel material can be used as a good adsorbent for dyes, which is promising in wastewater treatment.
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Affiliation(s)
- Jianping Yang
- Department
of Orthopedics, Changzhou Hospital of Traditional
Chinese Medicine, 25 Heping North Road, Changzhou 213000, Jiangsu, P.
R. China
| | - Kailun Wang
- Jiangsu
Key Laboratory of Environmentally Friendly Polymeric Materials, School
of Materials Science and Engineering, Jiangsu Collaborative Innovation
Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, Jiangsu, P. R. China
| | - Zhengxiang Lv
- Department
of Orthopedics, Changzhou Hospital of Traditional
Chinese Medicine, 25 Heping North Road, Changzhou 213000, Jiangsu, P.
R. China
| | - Wenjun Li
- Jiangsu
Key Laboratory of Environmentally Friendly Polymeric Materials, School
of Materials Science and Engineering, Jiangsu Collaborative Innovation
Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, Jiangsu, P. R. China
| | - Keming Luo
- Jiangsu
Key Laboratory of Environmentally Friendly Polymeric Materials, School
of Materials Science and Engineering, Jiangsu Collaborative Innovation
Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, Jiangsu, P. R. China
| | - Zheng Cao
- Jiangsu
Key Laboratory of Environmentally Friendly Polymeric Materials, School
of Materials Science and Engineering, Jiangsu Collaborative Innovation
Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, Jiangsu, P. R. China
- Changzhou
University Huaide College, Jingjiang 214500, P. R. China
- National
Experimental Demonstration Center for Materials Science and Engineering, Changzhou University, Changzhou 213164, P. R.
China
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5
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Jiang C, Wu T, Liu J, Wang Y. Application of a thermo-sensitive imprinted SERS substrate to the rapid trace detection of ofloxacin. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2020; 12:4783-4788. [PMID: 32945296 DOI: 10.1039/d0ay00616e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A novel composite (AgNPs-MIPs) was prepared by combining nano-silver particles with an ofloxacin (OFL) imprinted thermo-sensitive hydrogel. The thermo-sensitive optical properties of the composite were studied and it was used as a Raman substrate for the detection of ofloxacin. The results have shown that the position and intensity of the plasmon resonance absorption peak of the AgNPs-MIPs can be reversibly changed with the change of temperature, and the intensity of the ofloxacin Raman signal increases with the increase of temperature. Because the hydrogel combined Raman enhancement of silver nanoparticles, the selectivity of molecularly imprinted materials and the intelligent response of thermo-sensitive hydrogels, it can realize rapid, in situ, trace and selective detection of ofloxacin. Moreover, the detection limit can reach 10-10 mol L-1.
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Affiliation(s)
- Caiyun Jiang
- College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China.
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6
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Yan Y, Chen M, Ge Q, Cong H, Fan Y, Sun L, Liu M, Tao Z. Enhanced response of benzo[6]urils sustained by graphene oxide for umbelliferones and its applications for quantitative detection of diquat. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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7
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Xu T, Wang X, Huang Y, Lai K, Fan Y. Rapid detection of trace methylene blue and malachite green in four fish tissues by ultra-sensitive surface-enhanced Raman spectroscopy coated with gold nanorods. Food Control 2019. [DOI: 10.1016/j.foodcont.2019.106720] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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8
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Song Y, Zhang Y, Huang Y, Fan Y, Lai K. Rapid Determination of Thiram Residues in Fruit Juice by surface-enhanced Raman Scattering Coupled with a Gold@Silver nanoparticle-graphene Oxide Composite. ANAL LETT 2019. [DOI: 10.1080/00032719.2019.1691220] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Yuying Song
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
| | - Yuanyi Zhang
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
| | - Yiqun Huang
- School of Chemical and Biological Engineering, Changsha University of Science and Technology, Hunan, China
| | - Yuxia Fan
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
- Engineering Research Center of Food Thermal-Processing Technology, Shanghai, China
| | - Keqiang Lai
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
- Engineering Research Center of Food Thermal-Processing Technology, Shanghai, China
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9
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Xie H, Li P, Shao J, Huang H, Chen Y, Jiang Z, Chu PK, Yu XF. Electrostatic Self-Assembly of Ti 3C 2T x MXene and Gold Nanorods as an Efficient Surface-Enhanced Raman Scattering Platform for Reliable and High-Sensitivity Determination of Organic Pollutants. ACS Sens 2019; 4:2303-2310. [PMID: 31385492 DOI: 10.1021/acssensors.9b00778] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A reliable surface-enhanced Raman scattering (SERS) substrate composed of two-dimensional (2D) MXene (Ti3C2Tx) nanosheets and gold nanorods (AuNRs) is designed and fabricated for sensitive detection of organic pollutants. The AuNRs are uniformly distributed on the surface of the 2D MXene nanosheets because of the strong electrostatic interactions, forming abundant SERS hot spots. The MXene/AuNR SERS substrate exhibits high sensitivity and excellent reproducibility in the determination of common organic dyes such as rhodamine 6G, crystal violet, and malachite green. The detection limits are 1 × 10-12, 1 × 10-12, and 1 × 10-10 M, and relative standard deviations determined from 13 areas on each sample are 18.1, 10.1, and 15.6%, respectively. In the determination of more complex organic pesticides and pollutants, the substrate also shows excellent sensitivity and quantitative detection, and the detection limits for thiram and diquat of 1 × 10-10 and 1 × 10-8 M, respectively, are much lower than the contaminant levels stipulated by the US Environmental Protection Agency. The MXene/AuNR composite constitutes an efficient SERS platform for reliable and high-sensitivity environmental analysis and food safety monitoring.
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Affiliation(s)
- Hanhan Xie
- Department of Medical Laboratory, The Second Clinical Medical College (Shenzhen People’s Hospital) of Jinan University, Shenzhen 518020, China
- Integrated Chinese and Western Medicine Postdoctoral Research Station, Jinan University, Guangzhou 510632, China
| | - Penghui Li
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Jundong Shao
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Hao Huang
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Yue Chen
- Department of Medical Laboratory, The Second Clinical Medical College (Shenzhen People’s Hospital) of Jinan University, Shenzhen 518020, China
| | - Zhenyou Jiang
- Integrated Chinese and Western Medicine Postdoctoral Research Station, Jinan University, Guangzhou 510632, China
| | - Paul K. Chu
- Department of Physics and Department of Materials Science and Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong 999077, China
| | - Xue-Feng Yu
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
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10
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Li HL, Qiu F, Ge QM, Liu M, Tao Z, Cong H. Electrochemiluminescence response of a benzouril-constructed electrode to bipyridyl herbicides. NEW J CHEM 2019. [DOI: 10.1039/c8nj06512h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An electrochemiluminescence sensor with modification of macrocyclic benzo[6]uril on the surface of a glass carbon electrode was achieved, which has been applied for the quantitative analysis of paraquat and diquat.
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Affiliation(s)
- Hai-Ling Li
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province
- Guizhou University
- Guiyang 550025
- China
| | - Fei Qiu
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province
- Guizhou University
- Guiyang 550025
- China
| | - Qing-Mei Ge
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province
- Guizhou University
- Guiyang 550025
- China
| | - Mao Liu
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province
- Guizhou University
- Guiyang 550025
- China
| | - Zhu Tao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province
- Guizhou University
- Guiyang 550025
- China
| | - Hang Cong
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province
- Guizhou University
- Guiyang 550025
- China
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11
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Wu R, Ge H, Liu C, Zhang S, Hao L, Zhang Q, Song J, Tian G, Lv J. A novel thermometer-type hydrogel senor for glutathione detection. Talanta 2018; 196:191-196. [PMID: 30683350 DOI: 10.1016/j.talanta.2018.12.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 12/03/2018] [Accepted: 12/09/2018] [Indexed: 01/29/2023]
Abstract
A thermometer-type visual sensor for glutathione (GSH) sensing was developed with stimulus-responsive fluorescent hydrogel which was obtained by using 5, 6-bicarboxylic fluorescein crossli`nked partly ammoniated polyacrylamide. Various experimental parameters such as the particle size of hydrogel, buffer solution and swelling time were optimized. It is accessible to measure the volume change of hydrogel with the sensor by reading the graduation on a pipette like thermometer with naked eye. The concentration of the GSH depended on the volume in a certain range as the signal. Satisfactory agreements between the sensor and HPLC results for atuomolan tablet assays indicated the capability of the thermometer-type sensors for the analysis of real samples. These findings proved the utility of stimulus-responsive, intelligent hydrogel and the suitability of thermometer-style visual sensor design for quantitative assays.
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Affiliation(s)
- Rui Wu
- College of Chemical and Environment Science, Shaanxi key laboratory of catalysis and application, Shaanxi University of Technology, Hanzhong, Shaanxi 723000, PR China.
| | - Hongguang Ge
- College of Chemical and Environment Science, Shaanxi key laboratory of catalysis and application, Shaanxi University of Technology, Hanzhong, Shaanxi 723000, PR China
| | - Cunfang Liu
- College of Chemical and Environment Science, Shaanxi key laboratory of catalysis and application, Shaanxi University of Technology, Hanzhong, Shaanxi 723000, PR China
| | - Shenghai Zhang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi 710062, PR China
| | - Liang Hao
- College of Chemical and Environment Science, Shaanxi key laboratory of catalysis and application, Shaanxi University of Technology, Hanzhong, Shaanxi 723000, PR China
| | - Qiang Zhang
- College of Chemical and Environment Science, Shaanxi key laboratory of catalysis and application, Shaanxi University of Technology, Hanzhong, Shaanxi 723000, PR China
| | - Juan Song
- College of Chemical and Environment Science, Shaanxi key laboratory of catalysis and application, Shaanxi University of Technology, Hanzhong, Shaanxi 723000, PR China
| | - Guanghui Tian
- College of Chemical and Environment Science, Shaanxi key laboratory of catalysis and application, Shaanxi University of Technology, Hanzhong, Shaanxi 723000, PR China.
| | - Jiagen Lv
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, Shaanxi 710062, PR China.
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12
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Wu H, Luo Y, Huang Y, Dong Q, Hou C, Huo D, Zhao J, Lei Y. A Simple SERS-Based Trace Sensing Platform Enabled by AuNPs-Analyte/AuNPs Double-Decker Structure on Wax-Coated Hydrophobic Surface. Front Chem 2018; 6:482. [PMID: 30460223 PMCID: PMC6232669 DOI: 10.3389/fchem.2018.00482] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 09/21/2018] [Indexed: 11/24/2022] Open
Abstract
In this work, a simple and versatile SERS sensing platform enabled by AuNPs-analyte/AuNPs double-decker structure on wax-coated hydrophobic surface was developed using a portable Raman spectrometer. Wax-coated silicon wafer served as a hydrophobic surface to induce both aggregation and concentration of aqueous phase AuNPs mixed with analyte of interest. After drying, another layer of AuNPs was drop-cast onto the layer of AuNPs-analyte on the substrate to form double-decker structure, thus introducing more “hot spots” to further enhance the Raman signal. To validate the sensing platform, methyl parathion (pesticide), and melamine (a nitrogen-enrich compound illegally added to food products to increase their apparent protein content) were employed as two model compounds for trace sensing demonstration. The as-fabricated sensor showed high reproducibility and sensitivity toward both methyl parathion and melamine detection with the limit of detection at the nanomolar and sub-nanomolar concentration level, respectively. In addition, remarkable recoveries for methyl parathion spiked into lake water samples were obtained, while reasonably good recoveries for melamine spiked into milk samples were achieved. These results demonstrate that the as-developed SERS sensing platform holds great promise in detecting trace amount of hazardous chemicals for food safety and environment protection.
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Affiliation(s)
- Huixiang Wu
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, China.,Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, CT, United States
| | - Yi Luo
- Department of Chemistry, University of Connecticut, Storrs, CT, United States
| | - Yikun Huang
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT, United States
| | - Qiuchen Dong
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT, United States
| | - Changjun Hou
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, China
| | - Danqun Huo
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, China
| | - Jing Zhao
- Department of Chemistry, University of Connecticut, Storrs, CT, United States
| | - Yu Lei
- Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, CT, United States.,Department of Biomedical Engineering, University of Connecticut, Storrs, CT, United States
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