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Luo Y, Su W, Rabbi MF, Wan Q, Xu D, Wang Z, Liu S, Xu X, Wu J. Quantitative analysis of microplastics in water environments based on Raman spectroscopy and convolutional neural network. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 926:171925. [PMID: 38522540 DOI: 10.1016/j.scitotenv.2024.171925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 02/22/2024] [Accepted: 03/21/2024] [Indexed: 03/26/2024]
Abstract
With the increasing interest in microplastics (MPs) pollutants, quantitative analysis of MPs in water environment is an important issue. Vibrational spectroscopy, represented by Raman spectroscopy, is widely used in MP detection because they can provide unique fingerprint characteristics of chemical components of MPs, but it is difficult to provide quantitative information. In this paper, an ingenious method for quantitative analysis of MPs in water environment by combining Raman spectroscopy and convolutional neural network (CNN) is proposed. It is innovatively proposed to collect the average mapping spectra (AMS) of the samples to improve the uniformity of Raman spectroscopy detection, and to increase the effective detection range of concentration by filtering different volumes of the same MP solutions. In order to verify the universality and effectiveness of the proposed method, 6 different sizes of Polyethylene (PE) MPs were used as detection objects and mixed into 5 different actual water environments. The R2 and RMSE of CNN for identifying the concentration of PE solutions could reach 0.9972 and 0.033, respectively. Meanwhile, by comparing machine learning models such as Random Forest (RF) and Support Vector Machine (SVM) were compared, and CNN combined with Raman spectroscopy has significant advantages in identifying the concentration of MPs.
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Affiliation(s)
- Yinlong Luo
- College of Mechanics and Engineering Science, Hohai University, Nanjing 210098, China; College of Mechanical and Electrical Engineering, Hohai University, Changzhou 213200, China
| | - Wei Su
- College of Mechanics and Engineering Science, Hohai University, Nanjing 210098, China; College of Mechanical and Electrical Engineering, Hohai University, Changzhou 213200, China.
| | - Mir Fazle Rabbi
- College of Mechanical and Electrical Engineering, Hohai University, Changzhou 213200, China
| | - Qihang Wan
- College of Mechanics and Engineering Science, Hohai University, Nanjing 210098, China
| | - Dewen Xu
- College of Mechanics and Engineering Science, Hohai University, Nanjing 210098, China; College of Mechanical and Electrical Engineering, Hohai University, Changzhou 213200, China
| | - Zhenfeng Wang
- College of Mechanics and Engineering Science, Hohai University, Nanjing 210098, China; College of Mechanical and Electrical Engineering, Hohai University, Changzhou 213200, China
| | - Shusheng Liu
- College of Mechanics and Engineering Science, Hohai University, Nanjing 210098, China; College of Mechanical and Electrical Engineering, Hohai University, Changzhou 213200, China
| | - Xiaobin Xu
- College of Mechanical and Electrical Engineering, Hohai University, Changzhou 213200, China
| | - Jian Wu
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410003, China
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2
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Hu P, Zhang Y, Wei H, Zhang W, Song L, Zhang M, Meng X, Shang M, Wang C. Point-of-Use SERS Approach for Efficient Determination and Removal of Phthalic Acid Esters Based on a Metal-Organic Framework-Coated Melamine Sponge. ACS APPLIED MATERIALS & INTERFACES 2024; 16:11528-11536. [PMID: 38386864 DOI: 10.1021/acsami.3c17729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
Phthalic acid esters (PAEs) are ubiquitous environmental contaminants, and their real-time monitoring and removal remain challenging. Herein, a point-of-use (POU) device integrating adsorption, surface-enhanced Raman spectroscopy (SERS), and removal strategy was developed and realized ultrafast on-site determination of PAEs and cleanup of them from water. A piece of flexible melamine sponge (MS) was coated with gold nanostars (AuNSs) and metal-organic frameworks (MOFs), thus obtaining SERS activity and adsorption capacity. Based on this multifunctional AuNSs@MOFs/MS composite, clear trends were observed between SERS signal intensity and concentration of di(2-ethylhexyl)phthalate (DEHP) and dibutyl phthalate (DBP). The method detection limits of DEHP and DBP were calculated to be 0.75 × 10-7 and 0.67 × 10-7 M in water, respectively, proving good sensitivity. Furthermore, this POU device exhibited satisfactory adsorption capacity (∼82.3 g/g for DBP and ∼90.0 g/g for DEHP), high adsorption efficiency (equilibrium in 100 s), and good regeneration capability (removal efficiency >70% after 5 cycles). The applicability of this device was verified by its good determination and removal performance in real environmental water matrices. The whole process could be completed within 5 min. This approach provides a new POU alternative for real-time monitoring and removal of PAEs in water.
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Affiliation(s)
- Peishan Hu
- Physical and Chemical Laboratory, Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250000, China
| | - Yuxuan Zhang
- The First Clinical Medical College, Nanjing Medical University, Nanjing 211166, China
| | - Haiyan Wei
- Physical and Chemical Laboratory, Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250000, China
| | - Wei Zhang
- Physical and Chemical Laboratory, Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250000, China
| | - Liqun Song
- Physical and Chemical Laboratory, Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250000, China
| | - Mengping Zhang
- Physical and Chemical Laboratory, Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250000, China
| | - Xiao Meng
- Physical and Chemical Laboratory, Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250000, China
| | - Ming Shang
- Shandong Provincial Key Laboratory of Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250000, China
| | - Cuijuan Wang
- Physical and Chemical Laboratory, Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250000, China
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3
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Chen H, Han C, Zhang L, Wu Y. Porous rod-shaped Fe 2O 3/Ag/BP: a novel substrate for highly sensitive SERS detection of persistent organic pollutants. NANOTECHNOLOGY 2024; 35:195710. [PMID: 38330462 DOI: 10.1088/1361-6528/ad27ab] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 02/08/2024] [Indexed: 02/10/2024]
Abstract
A surface enhanced Raman scattering (SERS) substrate of porous rod-shaped ferric oxide (Fe2O3) combined with silver nanoparticles (Ag NPs) and black phosphorus (Fe2O3/Ag/BP) was fabricated to detect the persistent organic pollutants (POPs) at low concentration. The organic pollutant Rhodamine 6G (R6G) was used as the probe molecule to study the performances of Fe2O3/Ag/BP, and 4-chlorobiphenyl (PCB-3) was the target of detection. The limit of detection (LOD) of R6G based on this novel SERS substrate Fe2O3/Ag/BP was as low as 1.0 × 10-15M, which was five orders of magnitude lower than that of Fe2O3/Ag (10-10M). The enhancement factor (EF) of Fe2O3/Ag/BP was 6.44 × 108, which was 3.1 times higher than that of porous rod-shaped Fe2O3/Ag (2.08 × 108). The Raman signal of R6G based on Fe2O3/Ag/BP had a good homogeneity, and the relative standard deviation (RSD) of Raman signal intensities of R6G at 1643 cm-1was only 5.97%. Furthermore, the Fe2O3/Ag/BP substrate exhibited a recyclability through the photocatalytic degradation of R6G. The LOD of PCB-3 based on Fe2O3/Ag/BP was 10-9M. Besides, Fe2O3/Ag/BP had a high SERS activity even it was kept in a centrifuge tube without requiring complicated treatment. These results highlight the potential application of Fe2O3/Ag/BP for ultra-trace detection of POPs in the environment.
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Affiliation(s)
- Hang Chen
- School of Physics and Electronic Engineering, Jiangsu Key Laboratory of Advanced Laser Materials and Devices, Jiangsu Normal University, Xuzhou, Jiangsu 221116, People's Republic of China
- Jiangsu Xiyi Advanced Materials Research Institute of Industrial Technology, Xuzhou 221400, People's Republic of China
| | - Caiqin Han
- School of Physics and Electronic Engineering, Jiangsu Key Laboratory of Advanced Laser Materials and Devices, Jiangsu Normal University, Xuzhou, Jiangsu 221116, People's Republic of China
| | - Le Zhang
- School of Physics and Electronic Engineering, Jiangsu Key Laboratory of Advanced Laser Materials and Devices, Jiangsu Normal University, Xuzhou, Jiangsu 221116, People's Republic of China
- Jiangsu Xiyi Advanced Materials Research Institute of Industrial Technology, Xuzhou 221400, People's Republic of China
| | - Ying Wu
- School of Physics and Electronic Engineering, Jiangsu Key Laboratory of Advanced Laser Materials and Devices, Jiangsu Normal University, Xuzhou, Jiangsu 221116, People's Republic of China
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4
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Du B, Liu Y, Tan J, Wang Z, Ji C, Shao M, Zhao X, Yu J, Jiang S, Zhang C, Man B, Li Z. Thermoelectrically Driven Dual-Mechanism Regulation on SERS and Application Potential for Rapid Detection of SARS-CoV-2 Viruses and Microplastics. ACS Sens 2024; 9:502-513. [PMID: 38193423 DOI: 10.1021/acssensors.3c02507] [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] [Indexed: 01/10/2024]
Abstract
Electric-induced surface-enhanced Raman scattering (E-SERS) has been widely studied for its flexible regulation of SERS after the substrate is prepared. However, the enhancement effect is not sufficiently high in the E-SERS technology reported thus far, and no suitable field of application exists. In this study, a highly sensitive thermoelectrically induced SERS substrate, Ag/graphene/ZnO (AGZ), was fabricated using ZnO nanoarrays (NRs), graphene, and Ag nanoparticles (NPs). Applying a temperature gradient to the ZnO NRs enhanced the SERS signals of the probe molecules by a factor of approximately 20. Theoretical and experimental results showed that the thermoelectric potential enables the simultaneous modulation of the Fermi energy level of graphene and the plasma resonance peak of Ag NPs, resulting in a double enhancement in terms of physical and chemical mechanisms. The AGZ substrate was then combined with a mask to create a wearable thermoelectrically enhanced SERS mask for collecting SARS-CoV-2 viruses and microplastics. Its SERS signal can be enhanced by the temperature gradient created between a body heat source (∼37 °C) and a cold environment. The suitability of this method for virus detection was also examined using a reverse transcription-polymerase chain reaction and SARS-CoV-2 virus antigen detection. This work offers new horizons for research of E-SERS, and its application potential for rapid detection of the SARS-CoV-2 virus and microplastics was also studied.
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Affiliation(s)
- Baoqiang Du
- School of Physical and Electronic, Shandong Normal University, Jinan 250014, China
| | - Yalin Liu
- School of Physical and Electronic, Shandong Normal University, Jinan 250014, China
| | - Jibing Tan
- School of Physical and Electronic, Shandong Normal University, Jinan 250014, China
| | - Zhanning Wang
- School of Physical and Electronic, Shandong Normal University, Jinan 250014, China
| | - Chang Ji
- School of Physical and Electronic, Shandong Normal University, Jinan 250014, China
| | - Mingrui Shao
- School of Physical and Electronic, Shandong Normal University, Jinan 250014, China
| | - Xiaofei Zhao
- School of Physical and Electronic, Shandong Normal University, Jinan 250014, China
| | - Jing Yu
- School of Physical and Electronic, Shandong Normal University, Jinan 250014, China
| | - Shouzhen Jiang
- School of Physical and Electronic, Shandong Normal University, Jinan 250014, China
| | - Chao Zhang
- School of Physical and Electronic, Shandong Normal University, Jinan 250014, China
| | - Baoyuan Man
- School of Physical and Electronic, Shandong Normal University, Jinan 250014, China
| | - Zhen Li
- School of Physical and Electronic, Shandong Normal University, Jinan 250014, China
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5
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Luo Y, Su W, Xu D, Wang Z, Wu H, Chen B, Wu J. Component identification for the SERS spectra of microplastics mixture with convolutional neural network. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 895:165138. [PMID: 37379925 DOI: 10.1016/j.scitotenv.2023.165138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 06/16/2023] [Accepted: 06/24/2023] [Indexed: 06/30/2023]
Abstract
With the increasing interest in microplastics (MPs) pollutants, relevant detection technologies are also developing. In MPs analysis, vibrational spectroscopy represented by surface-enhanced Raman spectroscopy (SERS) is widely used because they can provide unique fingerprint characteristics of chemical components. However, it is still a challenge to separate various chemical components from the SERS spectra of MPs mixture. In this study, it is innovatively proposed to combine the convolutional neural networks (CNN) model to simultaneously identify and analyze each component in the SERS spectra of six common MPs mixture. Different from the traditional method, which requires a series of spectral preprocessing such as baseline correction, smoothing and filtering, the average identification accuracy of MP components is as high as 99.54 % after the unpreprocessed spectral data is trained by CNN, which is better than other classical algorithms such as support vector machine (SVM), principal component analysis linear discriminant analysis (PCA-LDA), partial least squares discriminant analysis (PLS-DA), Random Forest (RF), and K Near Neighbor (KNN), with or without spectral preprocessing. The high accuracy shows that CNN can be used to quickly identify MPs mixture with unpreprocessed SERS spectra data.
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Affiliation(s)
- Yinlong Luo
- College of Science, Hohai University, Changzhou 213022, China
| | - Wei Su
- College of Science, Hohai University, Changzhou 213022, China.
| | - Dewen Xu
- College of Science, Hohai University, Changzhou 213022, China
| | - Zhenfeng Wang
- College of Science, Hohai University, Changzhou 213022, China
| | - Hong Wu
- School of Science, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
| | - Bingyan Chen
- College of Science, Hohai University, Changzhou 213022, China
| | - Jian Wu
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410003, China
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6
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Zhang M, Meng X, Li N, Zou W, Wei H, Liu R, Sun Y, Chen W, Cui J, Wang C. Integration of solid-phase microextraction and surface-enhanced Raman spectroscopy for in-vivo screening of polybrominated diphenyl ether. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 293:122476. [PMID: 36787678 DOI: 10.1016/j.saa.2023.122476] [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: 11/20/2022] [Revised: 01/21/2023] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
The monitoring of polybrominated diphenyl ethers (PBDEs) is of great significance owing to their high persistence, bioaccumulation, and toxicity to humans and animals. In this study, a sensitive and reproducible probe that integrates solid-phase microextraction and surface-enhanced Raman spectroscopy (SPME-SERS) was developed for screening PBDEs in multiphase specimens, including live fish, water, and electrical products. A roughed Cu fiber with an Ag layer was fabricated with dual functions. BDE-15 was readily extracted and detected on the SPME-SERS probe consisting of propanethiol-modified Ag nanoplates on a Cu wire. A clear linear relationship (R2 = 0.988) was established between the SERS intensity at 782 cm-1 and the logarithmic concentrations (from 100 ppb to 100 ppm), with a detection limit of 15 ppb. This proposed method enables continuous in vivo monitoring in fish without complicated pretreatments. The results obtained by this SPME-SERS approach were validated by high-performance liquid chromatography and showed good agreement. This "extracting and detecting" SPME-SERS method provides a potential tool to monitor the occurrence, formation, and migration of PBDEs.
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Affiliation(s)
- Mengping Zhang
- Physical and Chemical Laboratory, Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250000, PR China
| | - Xiao Meng
- Physical and Chemical Laboratory, Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250000, PR China
| | - Nianlu Li
- Physical and Chemical Laboratory, Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250000, PR China
| | - Wei Zou
- Physical and Chemical Laboratory, Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250000, PR China
| | - Haiyan Wei
- Physical and Chemical Laboratory, Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250000, PR China
| | - Ranran Liu
- Physical and Chemical Laboratory, Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250000, PR China
| | - Yaxin Sun
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, PR China
| | - Wenwen Chen
- Physical and Chemical Laboratory, Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250000, PR China
| | - Jingcheng Cui
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, Shandong, China.
| | - Cuijuan Wang
- Physical and Chemical Laboratory, Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250000, PR China.
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7
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Zyubin AY, Kon II, Poltorabatko DA, Samusev IG. FDTD Simulations for Rhodium and Platinum Nanoparticles for UV Plasmonics. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13050897. [PMID: 36903775 PMCID: PMC10005487 DOI: 10.3390/nano13050897] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 02/20/2023] [Accepted: 02/24/2023] [Indexed: 05/27/2023]
Abstract
The article describes the results of finite-difference time-domain (FDTD) mathematical modeling of electromagnetic fields distortion near the surfaces of two transition metals: rhodium (Rh) and platinum (Pt) on glass (SiO2) substrates. Results were compared with calculated optical properties of classical SERS generating metals (Au and Ag). We have performed FDTD-based theoretical calculations for UV SERS-active nanoparticles (NPs) and structures based on hemispheres of Rh and Pt and planar surfaces, consisting of single NPs with varied gaps between them. The results have been compared with gold stars, silver spheres and hexagons. The prospects of the theoretical approach for single NPs and planar surfaces modeling to evaluate optimal field amplification and light scattering parameters have been shown. The presented approach could be applied as a basis for performing the methods of controlled synthesis for LPSR tunable colloidal and planar metal-based biocompatible optical sensors for UV and deep-UV plasmonics. The difference between UV-plasmonic NPs and plasmonics in a visible range has been evaluated.
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8
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Kundalevich A, Zyubin A, Matveeva K, Samusev I, Lyatun I. Determination of Anthracene Derivatives in Baltic Amber Using SERS. SENSORS (BASEL, SWITZERLAND) 2023; 23:2161. [PMID: 36850758 PMCID: PMC9962695 DOI: 10.3390/s23042161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 02/06/2023] [Accepted: 02/09/2023] [Indexed: 06/18/2023]
Abstract
The article describes the results of Raman spectroscopy and SERS for the study of fluorescent components of Baltic amber via the extraction method. Using SERS, it was possible to confirm the presence of anthracene derivatives in amber: tetracene and benzanthracene. It has been shown that SERS methods are effective for the detection of aromatic compounds; they increase the registered Raman signal and make it possible to identify peaks characteristic of the compounds under study. By combining experimental methods with DFT simulations, anthracene derivatives were modeled and confirmed to be present in the structure of Baltic amber. A combination of the proposed methods can be used to distinguish between different types of amber and isolate the necessary amber components. The obtained results are promising for compiling spectral maps of ambers for their possible classification by their place of origin.
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Affiliation(s)
- Anna Kundalevich
- Research and Education Center “Fundamental and Applied Photonics. Nanophotonics”, Immanuel Kant Baltic Federal University, A. Nevskogo 14, 236016 Kaliningrad, Russia
| | - Andrey Zyubin
- Research and Education Center “Fundamental and Applied Photonics. Nanophotonics”, Immanuel Kant Baltic Federal University, A. Nevskogo 14, 236016 Kaliningrad, Russia
| | - Karina Matveeva
- Research and Education Center “Fundamental and Applied Photonics. Nanophotonics”, Immanuel Kant Baltic Federal University, A. Nevskogo 14, 236016 Kaliningrad, Russia
| | - Ilia Samusev
- Research and Education Center “Fundamental and Applied Photonics. Nanophotonics”, Immanuel Kant Baltic Federal University, A. Nevskogo 14, 236016 Kaliningrad, Russia
| | - Ivan Lyatun
- The International Research Center “X-ray Coherent Optics”, Immanuel Kant Baltic Federal University, A. Nevskogo 14, 236016 Kaliningrad, Russia
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9
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Shan J, Ren T, Li X, Jin M, Wang X. Study of microplastics as sorbents for rapid detection of multiple antibiotics in water based on SERS technology. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 284:121779. [PMID: 36041262 DOI: 10.1016/j.saa.2022.121779] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 08/19/2022] [Accepted: 08/20/2022] [Indexed: 06/15/2023]
Abstract
Online monitoring of antibiotics in the environment attracts more and more attention. Surface-enhanced Raman scattering (SERS) is a promising technique for the detection of trace amounts of antibiotics in the environment, which is fast, non-invasive and sensitive. To investigate the enrichment of trace amounts of antibiotics in water, polyethylene microplastics (PE MPs) were prepared as sorbents to simply concentrate enrofloxacin, ciprofloxacin hydrochloride monohydrate and triclosan in water, followed by the SERS measurement of antibiotics extract washed from MPs on an AgNPs@Si SERS substrate. Limit of detection of Rhodamine 6G is 2.1 × 10-12 M achieved from the AgNPs@Si SERS, indicating a high enhancement. The detection results show that SERS peaks of the antibiotics could be observed from the spectra of the extracts eluted from MPs, indicating MPs could adsorb and desorb antibiotics from water. Besides, for enrofloxacin and triclosan, the intensity of SERS measured from the MPs extracts are higher than that of directly from the spiked water, demonstrating the proposed method could lower the detectable concentration of hydrophobic antibiotics in water. Moreover, the proposed MPs sorbents combined with SERS method was applied to detect the antibiotics in real river water, with minimal detection of 10-10 M, 10-8 M, and 10-8 M achieved for enrofloxacin, ciprofloxacin hydrochloride monohydrate and triclosan, respectively. The proposed method provides a promising simple, rapid and low reagent consuming means for monitoring antibiotics in water.
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Affiliation(s)
- Jiajia Shan
- School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China.
| | - Tao Ren
- School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China
| | - Xinjing Li
- School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China
| | - Mengke Jin
- School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China
| | - Xue Wang
- School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China
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10
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Kang S, Wang W, Rahman A, Nam W, Zhou W, Vikesland PJ. Highly porous gold supraparticles as surface-enhanced Raman spectroscopy (SERS) substrates for sensitive detection of environmental contaminants. RSC Adv 2022; 12:32803-32812. [PMID: 36425178 PMCID: PMC9665105 DOI: 10.1039/d2ra06248h] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 11/09/2022] [Indexed: 09/10/2023] Open
Abstract
Surface-enhanced Raman spectroscopy (SERS) has great potential as an analytical technique for environmental analyses. In this study, we fabricated highly porous gold (Au) supraparticles (i.e., ∼100 μm diameter agglomerates of primary nano-sized particles) and evaluated their applicability as SERS substrates for the sensitive detection of environmental contaminants. Facile supraparticle fabrication was achieved by evaporating a droplet containing an Au and polystyrene (PS) nanoparticle mixture on a superamphiphobic nanofilament substrate. Porous Au supraparticles were obtained through the removal of the PS phase by calcination at 500 °C. The porosity of the Au supraparticles was readily adjusted by varying the volumetric ratios of Au and PS nanoparticles. Six environmental contaminants (malachite green isothiocyanate, rhodamine B, benzenethiol, atrazine, adenine, and gene segment) were successfully adsorbed to the porous Au supraparticles, and their distinct SERS spectra were obtained. The observed linear dependence of the characteristic Raman peak intensity for each environmental contaminant on its aqueous concentration reveals the quantitative SERS detection capability by porous Au supraparticles. The limit of detection (LOD) for the six environmental contaminants ranged from ∼10 nM to ∼10 μM, which depends on analyte affinity to the porous Au supraparticles and analyte intrinsic Raman cross-sections. The porous Au supraparticles enabled multiplex SERS detection and maintained comparable SERS detection sensitivity in wastewater influent. Overall, we envision that the Au supraparticles can potentially serve as practical and sensitive SERS devices for environmental analysis applications.
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Affiliation(s)
- Seju Kang
- Department of Civil and Environmental Engineering, Virginia Tech 415 Durham Blacksburg 24061 Virginia USA
- Virginia Tech Institute of Critical Technology and Applied Science (ICTAS) Sustainable Nanotechnology Center (VTSuN) Blacksburg Virginia USA
| | - Wei Wang
- Department of Civil and Environmental Engineering, Virginia Tech 415 Durham Blacksburg 24061 Virginia USA
- Virginia Tech Institute of Critical Technology and Applied Science (ICTAS) Sustainable Nanotechnology Center (VTSuN) Blacksburg Virginia USA
| | - Asifur Rahman
- Department of Civil and Environmental Engineering, Virginia Tech 415 Durham Blacksburg 24061 Virginia USA
- Virginia Tech Institute of Critical Technology and Applied Science (ICTAS) Sustainable Nanotechnology Center (VTSuN) Blacksburg Virginia USA
| | - Wonil Nam
- Department of Electrical and Computer Engineering, Virginia Tech 415 Durham Blacksburg 24061 Virginia USA
- Department of Electronic Engineering, Pukyong National University Busan Republic of Korea
| | - Wei Zhou
- Department of Electrical and Computer Engineering, Virginia Tech 415 Durham Blacksburg 24061 Virginia USA
| | - Peter J Vikesland
- Department of Civil and Environmental Engineering, Virginia Tech 415 Durham Blacksburg 24061 Virginia USA
- Virginia Tech Institute of Critical Technology and Applied Science (ICTAS) Sustainable Nanotechnology Center (VTSuN) Blacksburg Virginia USA
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11
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Jin M, Liu J, Yu J, Zhou Q, Wu W, Fu L, Yin C, Fernandez C, Karimi-Maleh H. Current development and future challenges in microplastic detection techniques: A bibliometrics-based analysis and review. Sci Prog 2022; 105:368504221132151. [PMID: 36263507 PMCID: PMC10306156 DOI: 10.1177/00368504221132151] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/11/2023]
Abstract
Microplastics have been considered a new type of pollutant in the marine environment and have attracted widespread attention worldwide in recent years. Plastic particles with particle size less than 5 mm are usually defined as microplastics. Because of their similar size to plankton, marine organisms easily ingest microplastics and can threaten higher organisms and even human health through the food chain. Most of the current studies have focused on the investigation of the abundance of microplastics in the environment. However, due to the limitations of analytical methods and instruments, the number of microplastics in the environment can easily lead to overestimation or underestimation. Microplastics in each environment have different detection techniques. To investigate the current status, hot spots, and research trends of microplastics detection techniques, this review analyzed the papers related to microplastics detection using bibliometric software CiteSpace and COOC. A total of 696 articles were analyzed, spanning 2012 to 2021. The contributions and cooperation of different countries and institutions in this field have been analyzed in detail. This topic has formed two main important networks of cooperation. International cooperation has been a common pattern in this topic. The various analytical methods of this topic were discussed through keyword and clustering analysis. Among them, fluorescent, FTIR and micro-Raman spectroscopy are commonly used optical techniques for the detection of microplastics. The identification of microplastics can also be achieved by the combination of other techniques such as mass spectrometry/thermal cracking gas chromatography. However, these techniques still have limitations and cannot be applied to all environmental samples. We provide a detailed analysis of the detection of microplastics in different environmental samples and list the challenges that need to be addressed in the future.
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Affiliation(s)
- Meiqing Jin
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, China
| | - Jinsong Liu
- Zhejiang Key Laboratory of Ecological and Environmental Monitoring, Forewarning and Quality Control, Zhejiang Ecological and Environmental Monitoring Center, Hangzhou, China
| | - Jie Yu
- Department of Environment Engineering, China Jiliang University, Hangzhou, China
| | - Qingwei Zhou
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, China
| | - Weihong Wu
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, China
| | - Li Fu
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, China
| | - Chengliang Yin
- National Engineering Laboratory for Medical Big Data Application Technology, Chinese PLA General Hospital, Beijing, China
- Medical Big Data Research Center, Medical Innovation Research Division of PLA General Hospital, Beijing, China
| | - Carlos Fernandez
- School of Pharmacy and Life Sciences, Robert Gordon University, Aberdeen, UK
| | - Hassan Karimi-Maleh
- School of Resources and Environment, University of Electronic Science and Technology of China, Chengdu, PR China
- Department of Chemical Engineering, Quchan University of Technology, Quchan, Iran
- Department of Chemical Sciences, University of Johannesburg, Johannesburg, South Africa
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12
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Xu D, Su W, Lu H, Luo Y, Yi T, Wu J, Wu H, Yin C, Chen B. A gold nanoparticle doped flexible substrate for microplastics SERS detection. Phys Chem Chem Phys 2022; 24:12036-12042. [PMID: 35537128 DOI: 10.1039/d1cp05870c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Due to overuse of plastic products, decomposed microplastics (MPs) are widely spread in aquatic ecosystems, and will cause irreparable harm to the human body through the food chain. Traditional MP detection methods require cumbersome sample pre-processing procedures and complex instruments, so there is an urgent demand to develop methods to achieve simple on-site detection. Herein, a simple, sensitive, accurate, and stable MP detection method based on surface-enhanced Raman scattering (SERS) is investigated. Considering the hydrophobic problems of MPs, gold nanoparticle (AuNP) doped filter paper as a flexible SERS substrate is applied to capture MPs in the fiber pores. Benefitting from the electromagnetic (EM) hot spots generated by AuNPs, the Raman signal of MPs can be effectively enhanced. Meanwhile, the flexible SERS substrate has good sensitivity to a minimum detectable concentration of 0.1 g L-1 for polyethylene terephthalate (PET) in water, and the maximum enhancement factor (EF) can reach 360.5. Furthermore, the practicability of the developed method has been proved by the successful detection of MPs in tap water and pond water. This research provides an easy process, high sensitivity, and good reproducibility method for MP detection.
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Affiliation(s)
- Dewen Xu
- College of Science, Hohai University, Changzhou, 213022, China. .,Research Institute of Ocean and Offshore Engineering, Hohai University, Nantong, 226300, China
| | - Wei Su
- College of Science, Hohai University, Changzhou, 213022, China. .,Research Institute of Ocean and Offshore Engineering, Hohai University, Nantong, 226300, China
| | - Hanwen Lu
- College of Science, Hohai University, Changzhou, 213022, China. .,Research Institute of Ocean and Offshore Engineering, Hohai University, Nantong, 226300, China
| | - Yinlong Luo
- College of Science, Hohai University, Changzhou, 213022, China. .,Research Institute of Ocean and Offshore Engineering, Hohai University, Nantong, 226300, China
| | - Tianan Yi
- College of Science, Hohai University, Changzhou, 213022, China. .,Research Institute of Ocean and Offshore Engineering, Hohai University, Nantong, 226300, China
| | - Jian Wu
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, 410073, China.
| | - Hong Wu
- School of Science, Nanjing University of Posts and Telecommunications, Nanjing, 210003, China
| | - Cheng Yin
- College of Science, Hohai University, Changzhou, 213022, China.
| | - Bingyan Chen
- College of Science, Hohai University, Changzhou, 213022, China.
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13
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Wang X, Zhang E, Shi H, Tao Y, Ren X. Semiconductor-based surface enhanced Raman scattering (SERS): from active materials to performance improvement. Analyst 2022; 147:1257-1272. [PMID: 35253817 DOI: 10.1039/d1an02165f] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Surface enhanced Raman scattering (SERS) is a powerful spectral analysis technique and has exhibited remarkable application prospects in various fields. The design and fabrication of high-performance SERS substrates is key to promoting the development of SERS technology. Apart from noble metal substrates, non-metal substrates based on semiconductor materials have received increasing attention in recent years owing to their unique physical, chemical, and optical properties. However, compared with noble metal substrates, most semiconductor substrates show weak Raman enhancement ability. Therefore, exploring effective strategies to improve the SERS sensitivity is an urgent task. Numerous reviews have outlined the research progress of semiconductor SERS substrates, which mainly focused on summarizing the material category of semiconductor substrates. However, reviews that systematically summarize the strategies for improving the SERS performance of semiconductor substrates are lacking. In this review, we comprehensively discuss the research on semiconductor SERS from the aspects of mechanism, materials, and modification. Firstly, the Raman enhancement mechanism of semiconductor substrates and the SERS-active materials are discussed. Then, we summarize several effective approaches to boost the SERS performance of semiconductor substrates. In conclusion, we propose some prospects for this field.
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Affiliation(s)
- Xuejiao Wang
- Institute of Micro-Nano Optoelectronics and Terahertz Technology, School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China.
| | - Erjin Zhang
- Institute for Energy Research, Jiangsu University, Zhenjiang 212013, People's Republic of China
| | - Huimin Shi
- College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, People's Republic of China
| | - Yufeng Tao
- Institute of Micro-Nano Optoelectronics and Terahertz Technology, School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China.
| | - Xudong Ren
- Institute of Micro-Nano Optoelectronics and Terahertz Technology, School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China.
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14
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Wang Q, Li J, Song Y, Duan L, Yan C, Qu L, Wu Y, Han C. Graphene-embedded oblique V-shaped silver nanoarrays for hydrophobic pollutants pre-concentration and high-sensitivity SERS detection. JOURNAL OF HAZARDOUS MATERIALS 2022; 426:128085. [PMID: 34959216 DOI: 10.1016/j.jhazmat.2021.128085] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 12/01/2021] [Accepted: 12/12/2021] [Indexed: 06/14/2023]
Abstract
A surface enhanced Raman scattering (SERS) substrate of silver nanorod modified with graphene and silver nanorod (AgNR@Graphene@AgNR) has been fabricated to improve the sensitivity of SERS detection of hydrophobic pollutants, in which, graphene is an interlayer and AgNR is arranged on both sides of the graphene. The embedded graphene could help the oblique V-shaped AgNR structure to improve the sensitivity of SERS detection with a significant electric field enhancement effect. The annealing treatment of the substrate, shortening the nanometer gap between the graphene and AgNR, is benefit for producing a large number of "hot spots" at the fold, which has been verified by the finite difference time domain (FDTD) simulation. The enhancement factor (EF) of AgNR@Graphene@AgNR could reach up to 1.6 × 108 with a good reproducibility. The substrate could achieve high-sensitivity detection of 4-chlorobiphenyl (PCB-3) and 3, 3', 4, 4'-tetrachlorobiphenyl (PCB-77) with the limit of detections (LODs) of 1.72 × 10-10 M and 2.11 × 10-8 M, and the effective identification of PCBs mixture has been realized through principal component analysis (PCA), which means that the AgNR@Graphene@AgNR substrate has a potential significance for the detection and analysis of hydrophobic pollutant mixtures in the environment.
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Affiliation(s)
- Qin Wang
- Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China
| | - Jingwen Li
- Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China
| | - Yuhang Song
- Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China
| | - Lingfeng Duan
- Institute of Physics, Nanotechnology and Telecommunications, Peter the Great St. Petersburg Polytechnic University, St. Petersburg 195251, Russia
| | - Changchun Yan
- Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China
| | - Lulu Qu
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China.
| | - Ying Wu
- Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China.
| | - Caiqin Han
- Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China.
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15
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Rahman L, Mallach G, Kulka R, Halappanavar S. Microplastics and nanoplastics science: collecting and characterizing airborne microplastics in fine particulate matter. Nanotoxicology 2022; 15:1253-1278. [PMID: 35007468 DOI: 10.1080/17435390.2021.2018065] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Microplastic (MP) pollution in the environment is increasing, leading to growing concerns about human exposures and the subsequent impact on health. Although marine MP research has received significant attention in recent years, only a few studies have attempted characterization of MP in air and examined the MP uptake and influence via inhalation on human health. Moreover, the methods used for MP characterization in the marine environment require further optimization to be applicable to MP in the air. This paper details method for collecting and characterizing MP < 2.5 μm in air samples for the purposes of toxicological assessment. The first phase of the study evaluated (a) the suitability of various filter types to collect respirable airborne MP <2.5 μm, and; (b) the ability of Raman and enhanced darkfield-hyperspectral spectroscopy methods to identify MP reference standards collected from spiked filters and in cells after exposure to reference MP. In the second phase, these methods were employed to characterize MP <2.5 μm in personal, indoor and outdoor filter air samples and in cells following exposure to filter extracted material. The results showed the presence of a variety of MP in the respirable size fraction (0.1-1 µm aerodynamic diameter). Silver membrane filters were found not suitable for collecting and analyzing MP <2.5 μm. While it was easy to detect reference MP in cells post-exposure, the identity of only two types of air-borne MP was confirmed in cells. The study highlighted possible sources of artifacts and inconsistencies in analyzing airborne MP.
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Affiliation(s)
- Luna Rahman
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, ON, Canada
| | - Gary Mallach
- Water and Air Quality Bureau, Health Canada, Ottawa, ON, Canada
| | - Ryan Kulka
- Water and Air Quality Bureau, Health Canada, Ottawa, ON, Canada
| | - Sabina Halappanavar
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, ON, Canada.,Department of Biology, University of Ottawa, Ottawa, ON, Canada
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16
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Chen Q, Qin L, Shi C, Kang SZ, Li X. A stable and plug-and-play aluminium/titanium dioxide/metal-organic framework/silver composite sheet for sensitive Raman detection and photocatalytic removal of 4-aminothiophenol. CHEMOSPHERE 2021; 282:131000. [PMID: 34111640 DOI: 10.1016/j.chemosphere.2021.131000] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 04/29/2021] [Accepted: 05/23/2021] [Indexed: 06/12/2023]
Abstract
The sensitive detection and rapid removal of 4-aminothiophenol (4-ATP, a poisonous pesticide) demand special design to potential substrates. Herein, a metal-organic framework (ZIF-8) and Ag nanoparticles were fabricated one by one on the TiO2 coated Al sheet, and thus the Al-TiO2-ZIF-8-Ag sheet with sandwich structure was successfully synthesized. The cost-effective Al-TiO2-ZIF-8-Ag sheet (3.7 wt% Ag) possessed a low detection concentration of 1 × 10-9 M towards 4-ATP, and surface-enhanced Raman scattering (SERS) analytical enhanced factor (AEF) of the Al-TiO2-ZIF-8-Ag was 2.6 × 106, which was higher than other similar substrates. Furthermore, 4-ATP can be selectively and repeatedly detected on the Al-TiO2-ZIF-8-Ag even through it was in real samples. It indicated that the Al-TiO2-ZIF-8-Ag was a very active and stable SERS materials for the monitoring of 4-ATP. Importantly, the substrate exhibited faster and more efficient photocatalytic activity for 4-ATP degradation. The SERS and photocatalytic mechanisms of 4-ATP on the Al-TiO2-ZIF-8-Ag substrate were proposed. The cost-effective Al-TiO2-ZIF-8-Ag sheet with double function is plug-and-play, and could be used in the detection and treatment of pollutants in wastewater.
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Affiliation(s)
- Qian Chen
- School of Chemical and Environmental Engineering, Center of Graphene Research, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 201418, China
| | - Lixia Qin
- School of Chemical and Environmental Engineering, Center of Graphene Research, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 201418, China
| | - Changli Shi
- School of Chemical and Environmental Engineering, Center of Graphene Research, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 201418, China
| | - Shi-Zhao Kang
- School of Chemical and Environmental Engineering, Center of Graphene Research, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 201418, China
| | - Xiangqing Li
- School of Chemical and Environmental Engineering, Center of Graphene Research, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 201418, China.
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