Recent progress in the application of nanomaterials in the analysis of emerging chemical contaminants

Huang, Xiaohong; Liu, Qian; Yao, Shouzhuo; Jiang, Guibin

doi:10.1039/c7ay00859g

Cited by 28 publications

(12 citation statements)

References 167 publications

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“…Nowadays, nanotechnology is widely used in numerous applications, including energy storage and conversion, photonics, and biomedical applications [ 1 , 2 ]. However, despite the advantages and wide applicability of nanomaterials, their synthesis routes are not been fully understood [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Copper and Copper Oxide Nanomaterials by Pulsed Electric Field in Water with Various Electrical Conductivities

2020

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Nanomaterial synthesis is a hot research subject that has been extensively studied in the last two decades. Recently, plasmas in liquid systems have been proposed as an efficient means of synthesizing various types of nanomaterials. The formation processes implicate many physical and chemical phenomena that take place at the electrode surface, as well as in the plasma volume, which renders it difficult to fully understand the underlying mechanisms. In this study, we assess the effect of electric field on nanomaterial synthesis in a system composed of two copper electrodes immersed in water, in the absence of an electrical discharge. The obtained results indicate that various nanostructures, including copper nanoparticles, copper oxide nanowires, and/or hollow nanoparticles, may be produced, depending on the electrical conductivity of the solution (adjusted by adding highly diluted HCl to deionized water). The materials synthesized herein are collected and characterized, and a formation mechanism is proposed. Overall, our results provide insight into the physical and chemical phenomena underlying nanomaterial synthesis in plasmas in liquid.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Copper and Copper Oxide Nanomaterials by Pulsed Electric Field in Water with Various Electrical Conductivities

2020

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“…From the graph, one can notice that the number of publications in which portable Raman instruments are used for SERS detection has been significantly growing in the last 5–10 years. To the best of our knowledge, although a large number of articles and reviews have been published, also in recent years, on food, drugs and medicine, explosives and warfare, environment, and art preservation, no paper has been specifically dedicated to the use of portable instruments for the detection of these analytes. Aim of this review is to fill this gap, focusing on the SERS detection of food contaminants.…”

Section: Introductionmentioning

confidence: 99%

SERS detection of food contaminants by means of portable Raman instruments

Pilot

2018

J Raman Spectroscopy

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Surface‐enhanced Raman scattering (SERS) has been emerging as a powerful tool for the detection of a variety of analytes due to its very high sensitivity and fingerprinting recognition capabilities. Technological progresses in the equipment for Raman analysis are contributing to its transition from a technically demanding research method to a more widely available analytical technique. In particular, the commercialization of portable or handheld instruments has opened up the possibility of performing in situ analysis. In this review, a selection of the SERS substrates that are expected to be more suitable for use in combination with portable instruments is presented: Substrates are compared, for example, in terms of performance, reproducibility, ease of fabrication, and surface area. Moreover, this paper provides a survey of the current diffusion of portable Raman instruments in the SERS detection of food contaminants: The investigation of several analytes is summarized (mainly toxins, virus, bacteria, pesticides, forbidden food dyes, and preservatives), reporting on the limits of detection and on the eventual coupling with concentration or separation techniques. A brief perspective on possible future developments of the SERS detection with portable instruments is also provided.

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“…Among many other contributions, recent developments in nanomaterials science and environmental nanotechnology have provided promising methods for the purification and monitoring of trace pollutants in water . For example, the use of adsorbents has been a powerful strategy in water remediation processes but had a new impetus by the application of nanomaterials for these purposes.…”

Section: Introductionmentioning

confidence: 99%

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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Recent progress in the application of nanomaterials in the analysis of emerging chemical contaminants

Abstract: We review the recent applications of nanomaterials in the analysis of emerging chemical contaminants (ECCs), which are defined as newly identified chemical contaminants with no regulatory status.

Cited by 28 publications

References 167 publications

Synthesis of Copper and Copper Oxide Nanomaterials by Pulsed Electric Field in Water with Various Electrical Conductivities

Synthesis of Copper and Copper Oxide Nanomaterials by Pulsed Electric Field in Water with Various Electrical Conductivities

SERS detection of food contaminants by means of portable Raman instruments

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

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