Rapid and sensitive in-situ detection of polar antibiotics in water using a disposable Ag–graphene sensor based on electrophoretic preconcentration and surface-enhanced Raman spectroscopy

Li, Yuanting; Qu, Lulu; Li, Dawei; Song, Qixia; Fathi, Farkhondeh; Long, Yi‐Tao

doi:10.1016/j.bios.2012.12.005

Cited by 157 publications

(64 citation statements)

References 31 publications

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“…The stronger band in this spectrum is observed at 1000 cm −1 , which is a Raman signature of PG, though its assignment has not been consensual in the literature. Hence, some authors have assigned this Raman band to the phenyl ring vibrational modes [8,9,12,39,40,42], while others assigned it to the presence of the beta lactam ring [11,38,41,44]. Nevertheless, for the magnetic-plasmonic substrates employed here, which differ in the average size of the Au NPs adsorbed at the surface, the SERS spectra always showed the band at about 1000 cm −1 .…”

Section: Resultsmentioning

confidence: 92%

“…Penicillin G (PG) belongs to the β-lactam antibiotics family whose structure is composed of a five-membered sulfur-containing thiazolidine ring fused to a beta-lactam ring and a phenyl ring attached to the side chain ( Figure S1, Supporting Information). The intensive use of PG as a pharmaceutical associated with the potential contamination of waters has raised interest in the SERS analysis of this antibiotic [8,9,11,12,[38][39][40][41][42][43][44]. To the best of our knowledge, there are no SERS studies on this analyte using magneto-plasmonic substrates.…”

Section: Introductionmentioning

confidence: 94%

“…As a consequence, the total enhancement factor may be higher than 10 10 [5,6], which turns this spectroscopic method into a powerful tool for trace detection in environmental monitoring applications. Indeed, a number of SERS substrates have been reported aimed at the detection of antibiotics in water [7][8][9][10][11][12][13]. Examples of SERS substrates for the detection of antibiotics include Ag colloids and Ag-loaded matrices, such as poly(styrene) and graphene.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

SERS Detection of Penicillin G Using Magnetite Decorated with Gold Nanoparticles

2017

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Sensitive and reliable procedures for detecting vestigial antibiotics are of great relevance for water quality monitoring due to the occurrence of such emergent pollutants in the aquatic environment. As such, we describe here research concerning the use of multifunctional nanomaterials combining magnetic and plasmonic components. These nanomaterials have been prepared by decorating magnetite nanoparticles (MNP) with colloidal gold nanoparticles (Au NPs) of distinct particle size distributions. Several analytical conditions were investigated in order to optimize the surface enhanced Raman scattering (SERS) detection of penicillin G (PG) dissolved in water. In particular, the dependence of the SERS signal by using distinct sized Au NPs adsorbed at the MNP was investigated. Additionally, microscopic methods, including Raman confocal microscopy, were employed to characterize the SERS substrates and then to qualitatively detect penicillin G using such substrates. For example, magnetic-plasmonic nanocomposites can be employed for magnetically concentrate analyte molecules and their removal from solution. As a proof of concept, we applied magneto-plasmonic nanosorbents in the removal of aqueous penicillin G and demonstrate the possibility of SERS sensing this antibiotic.

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Section: Resultsmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

SERS Detection of Penicillin G Using Magnetite Decorated with Gold Nanoparticles

2017

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“…Each organic molecule has a unique SERS spectrum that can act as a molecular fingerprint; thus, a SERSactive material has been used to identify molecules by SERS signals. In this regard, numerous SERSactive materials have been reported to detect various target chemicals, such as pesticides, polycyclic aromatic hydrocarbons, or food contaminants [6][7][8][9]. Among them, novel metal nanoparticles (NPs) are usually exploited for organic chemical detection.…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive Magnetic-SERS Dual-Function Silica Nanoprobes for Effective On-Site Organic Chemical Detection

Jeong¹,

Kim²,

Park³

et al. 2017

Preprint

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Abstract:We report magnetic silver nanoshells (M AgNSs) that have both magnetic and SERS properties for SERS-based detection. The M AgNSs are composed of hundreds of Fe3O4 nanoparticles for rapid accumulation and bumpy silver shell for sensitive SERS detection by nearinfrared laser excitation. The intensity of the SERS signal from the M AgNSs was strong enough to provide single particle-level detection. We obtained much stronger SERS signal intensity from the aggregated M AgNSs than from the non-aggregated AgNSs. 4-Fluorothiophenol was detected at concentrations as low as 1 nM, which corresponds to 0.16 ppb. The limit of detection for tetramethylthiuram disulfide was 10 μM, which corresponds to 3 ppm. The M AgNSs can be used to detect trace amounts of organic molecules using a portable Raman system.

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“…Dan et al proposed silver-electrode-posited screen-printed electrodes for concentrating aniline and phenol derivatives (as shown in Figure 3a, and realized both the qualification and quantification of these pollutants in the concentration range of 1 nM-1 μM [62]. Li and co-workers reported a disposable Ag-graphene sensor for concentrating antibiotics, and found that under optimized conditions (applied potential and preconcentration time), their proposed SERS detection method displayed a significant performance for rapid and sensitive analysis of low concentration polar antibiotics without preseparation step [63]. Another promising way is to use superhydrophobic surfaces to concentrate the analytes.…”

Section: Electrochemical and Hydrophobic Concentrationmentioning

confidence: 99%

Precision Target Guide Strategy for Applying SERS into Environmental Monitoring

Ouyang¹,

Li²,

Zhu³

et al. 2017

Raman Spectroscopy and Applications

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Surface enhanced Raman spectroscopy (SERS) is a promising analytical technique that exhibits various applications in trace detection and identification. When it is applied into environmental monitoring, we should concern several key points to improve detection sensitivity and selectivity for the detection in complex matrix. In this tutorial review, we mainly focus on the strategies for improving the use of SERS into environmental application. The strategies are summarized for enhancing the ability of the substrate to selectively capture specific targets, and for achieving separation and concentration of the analytes from the matrix and the assembly structures for multiple phase detection. We have also introduced several newly developed detection systems using portable instruments and miniaturized devices that are more suitable for infield applications. In addition, we discuss the present challenges that hide it from wide real application and give the outlook for the future development in applying SERS in environmental monitoring.

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Rapid and sensitive in-situ detection of polar antibiotics in water using a disposable Ag–graphene sensor based on electrophoretic preconcentration and surface-enhanced Raman spectroscopy

Cited by 157 publications

References 31 publications

SERS Detection of Penicillin G Using Magnetite Decorated with Gold Nanoparticles

SERS Detection of Penicillin G Using Magnetite Decorated with Gold Nanoparticles

Highly Sensitive Magnetic-SERS Dual-Function Silica Nanoprobes for Effective On-Site Organic Chemical Detection

Precision Target Guide Strategy for Applying SERS into Environmental Monitoring

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