Analysis and applications of nanoparticles in the separation sciences: A case of gold nanoparticles

Liu, Fu‐Ken

doi:10.1016/j.chroma.2009.07.026

Cited by 130 publications

(62 citation statements)

References 108 publications

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“…There are exciting potential of nanoparticles in catalysis [2][3][4][5][6][7], DNA sequence recognition [8][9][10], nonlinear optical devices [11], biological sensors [12,13], information storage [14], and plasmonics [15]. These properties are mainly due to their optical and electronic attributes modulated by their shape and size [16,17]. The engineered NPs might be utilized in interesting applications related to biomedical science and other areas like optics and electronics [4,12,[18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Biogenic gold nanotriangles from Saccharomonospora sp., an endophytic actinomycetes of Azadirachta indica A. Juss.

et al. 2013

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Microbial biofabrication is emerging as eco-friendly, simpler, and reproducible alternative to chemical synthesis of metals and semiconductor nanoparticles, allowing generation of rare geometrical forms such as nanotriangles and nanoprisms. Highly confined nanostructures like triangles/prisms are interesting class of nanoparticles due to their unique optical properties exploitable in biomedical diagnostics and biosensors. Here, we report for the first time a single-step biological protocol for the synthesis of gold nanotriangles using extract of endophytic actinomycetes Saccharomonospora sp., isolated from surface sterilized root tissues of Azadirachta indica A. Juss., when incubated with an aqueous solution of chloroaurate ions (AuCl − 4 /1 mM). Thin, flat occasionally prismatic gold nanotriangles were produced when aqueous chloroaurate ions reacted with the cell-free extract as well as with the biomass of endophytic Saccharomonospora. It was evidenced from sodium dodecyl sulfate-polyacrylamide gel electrophoresis analysis that proteins of 42 and 50 kD were involved in biosynthesis as well as in stabilization of the nanoparticles. The particle growth process was monitored by UV-vis spectroscopy, and the morphological characterization was carried out by transmission electron microscopy and atomic force microscopy together with X-ray powder diffractions. Although the exact mechanism for this shape-oriented synthesis is not clear so far, the possibility of achieving nanoparticle shape control in a microbial system is exciting.

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Section: Introductionmentioning

confidence: 99%

Biogenic gold nanotriangles from Saccharomonospora sp., an endophytic actinomycetes of Azadirachta indica A. Juss.

et al. 2013

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“…Another research group has synthesized gold nanoparticles (Au NPs) using a plant extracts in a similar way [3][4].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Copper Nanoparticles Using a Different Method: Determination of Its Antioxidant and Antimicrobial Activity

Gültekin

Güngör

Önem

et al. 2016

Journal of the Turkish Chemical Society, Section A: Chemistry

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Abstract:The aim of this study was to obtain copper oxide nanoparticles (CuO NPs) through a method of green synthesis that involves using peroxidase enzymes that are partly purified from fig leaves (Ficus carica). CuO NPs were successfully synthesized using the green synthesis method in the experiments performed. Ultraviolet-visible (UV-Vis) spectrophotometry of the characteristics of the acquired CuO NPs was performed with scanning electron microscopy (SEM) and X-ray diffraction (XRD). The optimum activation temperature for green synthesis was observed to be in 30 min, pH: 8, at 25 o C and in the concentration of 1 mM CuCl2. By using peroxidase enzymes with green synthesis, it was found that the results of the SEM and XRD measurements that acquired the CuO NPs were in the size of 50-120 nm. Afterwards, the antioxidant and antibacterial activities of these nanoparticles were measured, and it was understood from the obtained results that CuO NPs have both antioxidant and antimicrobial activities.

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“…More focused review article about CE analysis of poly(amidoamine) dendrimeric structures was prepared by Shi et al [43]. Paper summarizing the application of separation techniques (including CE) of gold nanoparticles [44,45] and QDs [46,47] analysis are also accessible.…”

Section: Capillary Electrophoresis For Analysis Of Nanomaterialsmentioning

confidence: 99%

Capillary Electrophoresis in Nanotechnologies versus Nanotechnologies in Capillary Electrophoresis

Adam¹,

Vaculovičová²

2018

Novel Nanomaterials - Synthesis and Applications

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Nanomaterials are attracting an interest of many researches. All this attention is due the unique physical and chemical properties of nanomaterials differing significantly from the bulk materials mainly due to their size in range of nanometers. Capillary electrophoresis (CE) is a powerful, well-established analytical technique that provides numerous valuable benefits over other separation methods including high-performance liquid chromatography. The connection between CE and nanotechnology can be approached by two strategies: (i) CE analysis of nanomaterials and (ii) nanomaterials for CE improvement. The first perspective focuses on uses of CE as a method for characterization employed during nanomaterial production and modification as well as for monitoring their properties and interactions with other molecules. The second viewpoint deals with applications of nanomaterials for improving CE performance, mainly by enhancing efficiency of separation using nanomaterials as a stationary or pseudo-stationary phase and by enhancing detection sensitivity and/or selectivity in both optical and electrochemical detection. Moreover, applications of nanomaterials for sample preparation before CE analysis will be mentioned. This chapter aims at highlighting the symbiosis of CE and nanotechnology as a combination of modern, progressive field with well-known and reliable analytical method.

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Analysis and applications of nanoparticles in the separation sciences: A case of gold nanoparticles

Cited by 130 publications

References 108 publications

Biogenic gold nanotriangles from Saccharomonospora sp., an endophytic actinomycetes of Azadirachta indica A. Juss.

Biogenic gold nanotriangles from Saccharomonospora sp., an endophytic actinomycetes of Azadirachta indica A. Juss.

Synthesis of Copper Nanoparticles Using a Different Method: Determination of Its Antioxidant and Antimicrobial Activity

Capillary Electrophoresis in Nanotechnologies versus Nanotechnologies in Capillary Electrophoresis

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