5-Sulfo anthranilic acid dithiocarbamate functionalized silver nanoparticles as a colorimetric probe for the simple and selective detection of tricyclazole fungicide in rice samples

2014 ◽  
Vol 6 (15) ◽  
pp. 5934-5941 ◽  
Author(s):  
Jigneshkumar V. Rohit ◽  
Suresh Kumar Kailasa
Keyword(s):  
Silver Nanoparticles ◽  
Anthranilic Acid ◽  
Colorimetric Sensor ◽  
Selective Detection ◽  
Ag Nps ◽  
Colorimetric Probe ◽  
Rice Samples

We report the use of SAADTC–Ag NPs as a colorimetric sensor for the detection of tricyclazole fungicide. The SPR peak of SAADTC–Ag NPs at 400 nm was drastically reduced by the addition of tricyclazole fungicide and yielded a new SPR peak at 550 nm.

scholarly journals Robust colorimetric detection based on the anti-aggregation of gold nanoparticles for bromide in rice samples

RSC Advances ◽  
2018 ◽  
Vol 8 (38) ◽  
pp. 21566-21576 ◽  
Author(s):  
Siwat Plaisen ◽  
Wilairat Cheewasedtham ◽  
Thitima Rujiralai
Keyword(s):  
Gold Nanoparticles ◽  
Colorimetric Detection ◽  
Colorimetric Sensor ◽  
Selective Detection ◽  
Bromide Ions ◽  
Rice Samples

In this work, we developed a AuNP colorimetric sensor for the facile, sensitive and selective detection of bromide ions in rice samples.

Green synthesis of methyl gallate conjugated silver nanoparticles: a colorimetric probe for gentamicin

2019 ◽  
Vol 43 (4) ◽  
pp. 1972-1979 ◽  
Author(s):  
Noor ul Ain ◽  
Zara Aslam ◽  
Muhammad Yousuf ◽  
Waqas Ahmed Waseem ◽  
Samina Bano ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Colorimetric Sensor ◽  
Methyl Gallate ◽  
Colorimetric Probe ◽  
Highly Efficient

A highly efficient colorimetric sensor for gentamicin is proposed based on methyl gallate conjugated silver nanoparticles.

scholarly journals Functionalization of silver nanoparticles with mPEGylated luteolin for selective visual detection of Hg2+ in water sample

RSC Advances ◽  
2018 ◽  
Vol 8 (51) ◽  
pp. 28843-28846 ◽  
Author(s):  
Weixia Qing ◽  
Mengnan Zhao ◽  
Conghui Kou ◽  
Minghua Lu ◽  
Yong Wang
Keyword(s):  
Silver Nanoparticles ◽  
Water Sample ◽  
Visual Detection ◽  
Colorimetric Sensor ◽  
Selective Detection

A novel colorimetric sensor for selective detection of Hg2+ based on mPEGylated luteolin functionalized silver nanoparticles was prepared.

A novel colorimetric sensor for sensitive determination of R-citalopram based on the plasmonic properties of silver nanoparticles

2017 ◽  
Vol 41 (22) ◽  
pp. 13881-13888 ◽  
Author(s):  
Javad Tashkhourian ◽  
Mina Afsharinejad
Keyword(s):  
Aqueous Solution ◽  
Silver Nanoparticles ◽  
Colorimetric Method ◽  
Colorimetric Sensor ◽  
Colorimetric Probe ◽  
Sensitive Determination ◽  
Inherent Chirality ◽  
Visual Differentiation

A simple and reliable colorimetric method for visual differentiation between the S-citalopram and R-citalopram enantiomers in aqueous solution based on the inherent chirality of silver nanoparticles as a colorimetric probe was presented.

scholarly journals Single-Step Green Synthesis of Highly Concentrated and Stable Colloidal Dispersion of Core-Shell Silver Nanoparticles and Their Antimicrobial and Ultra-High Catalytic Properties

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 1007
Author(s):  
Azam Ali ◽  
Mariyam Sattar ◽  
Fiaz Hussain ◽  
Muhammad Humble Khalid Tareen ◽  
Jiri Militky ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Tannic Acid ◽  
Rate Constant ◽  
Catalytic Properties ◽  
Colloidal Dispersion ◽  
Alkaline Condition ◽  
Core Shell ◽  
Average Particle ◽  
Ag Nps

The versatile one-pot green synthesis of a highly concentrated and stable colloidal dispersion of silver nanoparticles (Ag NPs) was carried out using the self-assembled tannic acid without using any other hazardous chemicals. Tannic acid (Plant-based polyphenol) was used as a reducing and stabilizing agent for silver nitrate in a mild alkaline condition. The synthesized Ag NPs were characterized for their concentration, capping, size distribution, and shape. The experimental results confirmed the successful synthesis of nearly spherical and highly concentrated (2281 ppm) Ag NPs, capped with poly-tannic acid (Ag NPs-PTA). The average particle size of Ag NPs-PTA was found to be 9.90 ± 1.60 nm. The colloidal dispersion of synthesized nanoparticles was observed to be stable for more than 15 months in the ambient environment (25 °C, 65% relative humidity). The synthesized AgNPs-PTA showed an effective antimicrobial activity against Staphylococcus Aureus (ZOI 3.0 mM) and Escherichia coli (ZOI 3.5 mM). Ag NPs-PTA also exhibited enhanced catalytic properties. It reduces 4-nitrophenol into 4-aminophenol in the presence of NaBH4 with a normalized rate constant (Knor = K/m) of 615.04 mL·s−1·mg−1. For comparison, bare Ag NPs show catalytic activity with a normalized rate constant of 139.78 mL·s−1·mg−1. Furthermore, AgNPs-PTA were stable for more than 15 months under ambient conditions. The ultra-high catalytic and good antimicrobial properties can be attributed to the fine size and good aqueous stability of Ag NPs-PTA. The unique core-shell structure and ease of synthesis render the synthesized nanoparticles superior to others, with potential for large-scale applications, especially in the field of catalysis and medical.

scholarly journals Antibacterial activity of royal jelly-mediated green synthesized silver nanoparticles

AMB Express ◽  
2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Susanna Gevorgyan ◽  
Robin Schubert ◽  
Mkrtich Yeranosyan ◽  
Lilit Gabrielyan ◽  
Armen Trchounian ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Green Synthesis ◽  
Royal Jelly ◽  
Fluorescence Emission ◽  
Spherical Particles ◽  
Ag Nps ◽  
Gram Negative ◽  
Green Synthesized Silver Nanoparticles ◽  
Higher Sensitivity

AbstractThe application of green synthesis in nanotechnology is growing day by day. It’s a safe and eco-friendly alternative to conventional methods. The current research aimed to study raw royal jelly’s potential in the green synthesis of silver nanoparticles and their antibacterial activity. Royal jelly served as a reducing and oxidizing agent in the green synthesis technology of colloidal silver nanoparticles. The UV–Vis maximum absorption at ~ 430 nm and fluorescence emission peaks at ~ 487 nm confirmed the presence of Ag NPs. Morphology and structural properties of Ag NPs and the effect of ultrasound studies revealed: (i) the formation of polydispersed and spherical particles with different sizes; (ii) size reduction and homogeneity increase by ultrasound treatment. Antibacterial activity of different concentrations of green synthesized Ag NPs has been assessed on Gram-negative S. typhimurium and Gram-positive S. aureus, revealing higher sensitivity on Gram-negative bacteria.

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