Two-step size- and shape-separation of biosynthesized gold nanoparticles

Wu, Weiwei; Huang, Jiale; Wu, Lingfeng; Sun, Daohua; Lin, Liqin; Zhou, Yao; Wang, Haitao; Li, Qingbiao

doi:10.1016/j.seppur.2013.01.005

Cited by 44 publications

(31 citation statements)

References 40 publications

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“…They found the mixture ratio of shape differed depending on gel position, but complete separation was not achieved. Wu et al (Wu W. et al, 2013) reported the size and shape separation of gold NPs. They performed their first size separation using DGC and a subsequent shape separation using AGE.…”

Section: Electric Fieldmentioning

confidence: 99%

Size-Selective Separation Techniques for Nanoparticles in Liquid

Mori

2015

KONA

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The many characteristics of nanoparticles (NPs) depend on their size and size distribution. When novel functions of NPs are attempted, it is necessary to monodisperse or nearly monodisperse NPs. Many synthesis methods have been proposed from solution-based chemistry to satisfy this demand. Despite such special techniques to prepare NPs, it is often the case that an additional classification procedure is needed to a certain extent to obtain monodispersed NPs, similar to other general precipitation methods used in NP preparation. Additionally, NPs must be purified post-synthesis to remove by-products. Hence, size-selective separation as post-synthesis operation is expected to become increasingly important. In this review, some recent developments of sizeselective separation methods for NPs based on using external fields, filtration, and the stability of the colloid system are highlighted.

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Section: Electric Fieldmentioning

confidence: 99%

Size-Selective Separation Techniques for Nanoparticles in Liquid

Mori

2015

KONA

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“…Methods such as size-selective precipitation, nanoporous filtration, and methods for extraction have successfully separated nanospheres of different sizes but are not very selective for nanorods due to their relatively large size. 53,56 Wei et al demonstrated that size-exclusion chromatography can separate nanorods from spheres, but this method is only partly successful. 54 Jana used phase-separation involving surfactant-assisted ordering.…”

Section: Seed-mediated Growth Methodsmentioning

confidence: 99%

Nanoparticles for hyperthermic therapy: synthesis strategies and applications in glioblastoma

Verma¹,

Lal²,

Noorden³

2014

IJN

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Glioblastoma multiforme (GBM) is the most common and most aggressive malignant primary brain tumor in humans. Current GBM treatment includes surgery, radiation therapy, and chemotherapy, sometimes supplemented with novel therapies. Despite recent advances, survival of GBM patients remains poor. Major challenges in GBM treatment are drug delivery across the blood–brain barrier, restriction of damage to healthy brain tissues, and limitation of resistance to therapies. This article reviews recent advances in the application of magnetic nanoparticles (MNPs), gold nanorods (GNRs), and carbon nanotubes (CNTs) for hyperthermia ablation of GBM. First, the article introduces GBM, its current treatment, and hyperthermia as a potential modality for the management of GBM. Second, it introduces MNPs, GNRs, and CNTs as inorganic agents to induce hyperthermia in GBM. Third, it discusses different methodologies for synthesis of each inorganic agent. Finally, it reviews in vitro and in vivo studies in which MNPs, GNRs, and CNTs have been applied for hyperthermia ablation and drug delivery in GBM.

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“…Same results were reported by other researchers and re ported that wave numbers signal stretching and vibrational bending of the peaks may be derived from compounds such as flavonoids, terpe noids, alkaloids and soluble proteins present in plants extracts and these may be responsible for the stabilization of gold nanoparticles. 27 …”

Section: Ftir Spectrum Of Azima Tetracantha Leaves Extract Mediated Gmentioning

confidence: 99%

Synthesis of Plant Mediated gold Nanoparticles using Azima Tetracantha Lam. Leaves extract and Evaluation of their Antimicrobial Activities

Hariharan¹,

Begum²,

Ilyas³

et al. 2016

Phcogj

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Aim:The demand for nanoparticles is increasing day by day due to their wide range of applications in various areas including pharmaceutical industry. Nanoparticles are formally synthesized by chemical methods in which the toxic and flammable chemicals are used. Methods: This article reports about an effective, rapid and eco-friendly technique for the fabrication of gold nanoparticles from gold chloride solution using Azima tetracantha Lam. leaves extract. The effects of the leaves extract of Azima tetracantha, the concentration of Gold chloride solution, the time of the reaction and the effect of tem¬perature on the rate of the reaction were investigated. The synthesized gold nanoparticles (AuNPs) were characterized by using various techniques such as Dynamic Light Spectroscopy (DLS), Scanning Electron Microscopy (SEM), UV-Vis spectra gave surface plasmon resonance (SPR) at 540 nm, Fourier Transform Infrared spectroscopy (FTIR) and X-ray diffraction (XRD). This revealed the reduction of gold ions (Au

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Two-step size- and shape-separation of biosynthesized gold nanoparticles

Cited by 44 publications

References 40 publications

Size-Selective Separation Techniques for Nanoparticles in Liquid

Size-Selective Separation Techniques for Nanoparticles in Liquid

Nanoparticles for hyperthermic therapy: synthesis strategies and applications in glioblastoma

Synthesis of Plant Mediated gold Nanoparticles using Azima Tetracantha Lam. Leaves extract and Evaluation of their Antimicrobial Activities

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