Silver nanoparticles with low cytotoxicity: controlled synthesis and surface modification with histidine

Hu, Guoqing; Liang, Guorun; Zhang, Wen; Jin, Wenxiu; Zhang, Yan; Chen, Qingyuan; Cai, Yuchun; Zhang, Wanzhong

doi:10.1007/s10853-017-1940-6

Cited by 17 publications

(8 citation statements)

References 51 publications

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“…Silver nanoparticles (AgNPs), a versatile nanomaterial, have attracted a great deal of attention largely owing to their remarkable physical, chemical, biological properties, e.g., photo-thermal effect, 1 electronic properties, 2 catalytic properties, [3][4][5][6] anti-cancer and anti-bacterial properties, 3,[7][8][9][10][11][12][13][14][15] as well as antifungal effects. 16 In recent years, the chemical synthesis of AgNPs mostly focused on the uniformity of morphologies and sizes because these two parameters can affect intrinsic properties of AgNPs, [17][18][19] such as localized surface plasmon resonance (LSPR), surface-enhanced Raman scattering (SERS), metalenhanced uorescence, and catalytic activity.…”

Section: Introductionmentioning

confidence: 99%

Preparation of triangular silver nanoplates by silver seeds capped with citrate-CTA⁺

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Section: Introductionmentioning

confidence: 99%

Preparation of triangular silver nanoplates by silver seeds capped with citrate-CTA⁺

et al. 2018

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“…Manuscript to be reviewed the presence of bonded hydroxyl (-OH) group (Gou et al, 2015;Hu et al, 2017;Wang et al, 2017). After the formation of AgNPs peaks were shifted to little higher wavenumber as compared to plant extract as indicated by Fig.…”

Section: Discussionmentioning

confidence: 99%

“…The antibacterial activity of the extract and AgNPs was evaluated against Escherichia coli, and Bacillus subtilis using disk diffusion method (Hu et al, 2017). Disks were soaked with distilled water (negative control), standard antibiotic cefipime (positive control) with the trade name of maxipime (glaxosmithkline), Rhazya stricta extract and the AgNPs solution with and without…”

Section: Antibacterial Activitymentioning

confidence: 99%

Peer Review #2 of "Synthesis, characterization and antibacterial activity of silver nanoparticles using Rhazya stricta (v0.2)"

2018

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Background Green synthesis of metallic nanoparticles has gained significant attention in the field of nano-medicine due to environment-friendly and cost-effective alternative in comparison to other physical and chemical methods. Several metals such as silver, gold, iron, titanium, zinc, magnesium, and copper have been subjected to nano-formulation for a wide range of useful applications. Silver nanoparticles (AgNPs) are playing a major role in the field of nano-medicine and nanotechnology. They are widely used in diagnostics, therapeutic and pharmaceutical industries. Studies have shown potential inhibitory antimicrobial, anti-inflammatory and anti-angiogenesis activities of AgNPs. Methods AgNPs have been synthesized using silver nitrate (AgNO3) and methanolic root extract of Rhazya stricta that belongs to the Apocynaceae family. Stability and dispersion of nanoparticles were improved by adding xylitol. Synthesized nanoparticles were characterized by UV-vis spectroscopy, scanning electron microscopy (SEM), Energy dispersive spectroscopy (EDS), X-ray diffractometer (XRD), and Fourier transforms infrared spectroscopy (FTIR). Furthermore, the antibacterial effect of the plant extract and the nanoparticles were evaluated against gram-positive (Bacillus subtilis) and gram-negative (Escherichia coli) bacteria. Results The Average size of AgNPs synthesized, was 20 nm with the spherical shape. Rhazya stricta based nanoparticles exhibited improved antibacterial activity against both gram-positive and negative strains.

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“…As shown in Figure 3(a), the absorption peak at about 300 nm of AgNO 3 disappeared, while a new absorption band appeared at 250-300 nm. In addition, the absorption peak near 411 nm was the characteristic surface Plasmon resonance (SPR) peak of large-size silver nanoparticles [30,31].…”

Section: E Optical Properties Of the Ag Ncsmentioning

confidence: 99%

Green Synthesis of Fluorescent Ag Nanoclusters for Detecting Cu2+ Ions and Its “Switch-On” Sensing Application for GSH

Shang

Gao

et al. 2021

Journal of Spectroscopy

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Herein, we prepared the L-histidine- (His-) protected silver nanoclusters (Ag NCs) by the microwave synthesis method. The synthesis process was rapid, facile, and environmentally friendly. Under 356 nm excitation, the as-prepared Ag NCs exhibited the blue fluorescence, and the fluorescence emission peak was located at 440 nm. The Ag NCs could successfully detect trace copper (Cu2+) ions in the aqueous solution and the limit of detection (LOD) was as low as 0.6 pM. Interestingly, the Ag NCs showed a different pH-dependent selectivity for both Cu2+ and iron (Fe3+) ions with no responses to other heavy metal ions. Furthermore, the as-fabricated fluorescent sensing system was utilized to detect glutathione (GSH, the LOD was 0.8 nM) by using the “switch-on” fluorescence recovery of Ag NCs through adding glutathione (GSH) to the Cu2+-Ag NCs solution.

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Silver nanoparticles with low cytotoxicity: controlled synthesis and surface modification with histidine

Cited by 17 publications

References 51 publications

Preparation of triangular silver nanoplates by silver seeds capped with citrate-CTA⁺

Preparation of triangular silver nanoplates by silver seeds capped with citrate-CTA⁺

Peer Review #2 of "Synthesis, characterization and antibacterial activity of silver nanoparticles using Rhazya stricta (v0.2)"

Green Synthesis of Fluorescent Ag Nanoclusters for Detecting Cu2+ Ions and Its “Switch-On” Sensing Application for GSH

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Silver nanoparticles with low cytotoxicity: controlled synthesis and surface modification with histidine

Cited by 17 publications

References 51 publications

Preparation of triangular silver nanoplates by silver seeds capped with citrate-CTA+

Preparation of triangular silver nanoplates by silver seeds capped with citrate-CTA+

Peer Review #2 of "Synthesis, characterization and antibacterial activity of silver nanoparticles using Rhazya stricta (v0.2)"

Green Synthesis of Fluorescent Ag Nanoclusters for Detecting Cu2+ Ions and Its “Switch-On” Sensing Application for GSH

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Preparation of triangular silver nanoplates by silver seeds capped with citrate-CTA⁺

Preparation of triangular silver nanoplates by silver seeds capped with citrate-CTA⁺