A Fast and Cost-Effective Detection of Melamine by Surface Enhanced Raman Spectroscopy Using a Novel Hydrogen Bonding-Assisted Supramolecular Matrix and Gold-Coated Magnetic Nanoparticles

Neng, Jing; Tan, Jiayuan; Jia, Kan; Sun, Peilong

doi:10.3390/app7050475

Cited by 15 publications

(8 citation statements)

References 47 publications

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“…The results showed that the proposed method enables successful determination of ultralow levels of malachite green in real water samples . A SERS active substrate based on Fe 3 O 4 /Au magnetic nanoparticles have been reported for the detection of melamine in milk, achieving a detection limit of 2.5 µg mL –1 . In all cases, the limit of detection of analytes was significantly improved due to the magnetic enrichment and SERS signal enhancement, which were simultaneously achieved by using this class of magneto‐plasmonic materials.…”

Section: Sers‐active Magnetic Nanosorbentsmentioning

confidence: 86%

Functionalized Inorganic Nanoparticles for Magnetic Separation and SERS Detection of Water Pollutants

et al. 2018

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Inorganic nanoparticles (NPs) have emerged in the last decades as key materials for a number of technologies. In particular, noble metal (Ag, Au) and iron oxide NPs have revealed important applications due to their plasmonic and magnetic properties, respectively. Among these applications, this review provides, on one hand, an overview on the use of colloidal metal NPs in surface enhanced Raman scattering (SERS) chemical analysis and, on the other hand, the application of iron oxides as a new class of nanosorbents for water pollutants. These distinct types of NPs are the main building blocks to produce [a] Raman spectroscopy is a powerful analytical tool for chemical characterization, providing information about molecular structure, surface processes, and interface reactions. [31,32] Raman spectroscopy is based on the inelastic scattering of photons by chemical species and materials (Raman scattering). Among the incident photons that hit the sample only a small portion is inelastically scattered, i.e. comes out at a different frequency from the incident light. The spectral information is based on the detection of these scattered photons that are recorded as energy shifts (Raman shifts) from the wavenumber of the elastic scattered photons (Rayleigh scattering). Each band in the Raman spectrum can be assigned to a vibrational mode (or Paula

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Section: Sers‐active Magnetic Nanosorbentsmentioning

confidence: 86%

Functionalized Inorganic Nanoparticles for Magnetic Separation and SERS Detection of Water Pollutants

et al. 2018

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“…Other than the earlier extensive works on the SERS-based discrimination [65][66][67][68][69], Neng's report also detailed the SERS-based discrimination of melamine by using Fe 3 O 4 /Au magnetic nanoparticles coated with 5-aminoorotic acid (AOA) as a substrate [78]. In their studies, the SERS substrate ( electrode modified with gold nanoparticles and reduced graphene oxide (AuNPs/rGO) was demonstrated by Chen et al towards the discrimination of melamine in food contact materials [75].…”

Section: Melamine Assay By Nanocompositesmentioning

confidence: 99%

Review on Nanomaterial-Based Melamine Detection

Shellaiah

Sun

2019

Chemosensors

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Illegal adulteration of milk products by melamine and its analogs has become a threat to the world. In 2008, the misuse of melamine with infant formula caused serious effects on babies of China. Thereafter, the government of China and the US Food and Drug Administration (FDA) limited the use of melamine of 1 mg/kg for infant formula and 2.5 mg/kg for other dairy products. Similarly, the World Health Organization (WHO) has also limited the daily intake of melamine of 0.2 mg/kg body weight per day. Many sensory schemes have been proposed by the scientists for carrying out screening on melamine poisoning. Among them, nanomaterial-based sensing techniques are very promising in terms of real-time applicability. These materials uncover and quantify the melamine by means of diverse mechanisms, such as fluorescence resonance energy transfer (FRET), aggregation, inner filter effect, surface-enhanced Raman scattering (SERS), and self-assembly, etc. Nanomaterials used for the melamine determination include carbon dots, quantum dots, nanocomposites, nanocrystals, nanoclusters, nanoparticles, nanorods, nanowires, and nanotubes. In this review, we summarize and comment on the melamine sensing abilities of these nanomaterials for their suitability and future research directions.

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“…Surface-enhanced Raman spectroscopy (SERS) is a convenient technique with high sensitivity, fast determination, and low cost, and has been widely applied in food safety analysis [18][19][20][21][22][23][24], environmental monitoring [25,26], protein immunoassay [27][28][29][30][31], and other fields. In recent years, SERS has attracted considerable attention because it can reveal structure, composition, and concentration of target molecules even at a single-molecule level by measuring fingerprint characteristics of target molecules [32,33].…”

Section: Introductionmentioning

confidence: 99%

Sensitive and Selective Detection of New Red Colorant Based on Surface-Enhanced Raman Spectroscopy Using Molecularly Imprinted Hydrogels

Neng

Wang

et al. 2019

Applied Sciences

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A polyacrylamide-based molecularly imprinted hydrogel (MIH) doped with positively charged gold nanoparticles (Au NPs) has been synthesized via a free radical polymerization of acrylamide (AM) aqueous solution containing positively charged Au NPs as a Raman active substrate, New Red colorant as a template molecule, N,N’-methylenebis(acrylamide) as a crosslinking agent, and potassium persulfate as an initiator. The Au NPs-doped MIHs were subsequently explored as a Raman active substrate for the sensitive and selective detection of New Red colorant via surface-enhanced Raman spectroscopy (SERS). The logarithmic intensity of the characteristic peak of New Red at 1572 cm−1 was proportional to the logarithmic concentration of New Red with a detection linear range of 1.64 × 10−6 to 1.64 × 10−4 M and a limit of detection (LOD) of 1.64 × 10−7 M. The recoveries ranged from 86.3% to 100.6% with a relative standard deviation (RSD) in the range of 2.3% to 7.7%. The RSD and recovery rates for the detection of New Red spiked in a sports drink sample were 1.8% to 7.7% and 91.0% to 97.1%, respectively. These results showed that SERS combined with MIHs as Raman active substrates could provide a sensitive, selective, and effective approach for the detection of the New Red colorant in beverage matrix.

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A Fast and Cost-Effective Detection of Melamine by Surface Enhanced Raman Spectroscopy Using a Novel Hydrogen Bonding-Assisted Supramolecular Matrix and Gold-Coated Magnetic Nanoparticles

Cited by 15 publications

References 47 publications

Functionalized Inorganic Nanoparticles for Magnetic Separation and SERS Detection of Water Pollutants

Functionalized Inorganic Nanoparticles for Magnetic Separation and SERS Detection of Water Pollutants

Review on Nanomaterial-Based Melamine Detection

Sensitive and Selective Detection of New Red Colorant Based on Surface-Enhanced Raman Spectroscopy Using Molecularly Imprinted Hydrogels

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