Single pot synthesis of polyaniline protected silver nanoparticles by interfacial polymerization and study its application on electrochemical oxidation of hydrazine

Paulraj, P.; Janaki, N.; Sandhya, S.; Pandian, K.

doi:10.1016/j.colsurfa.2010.12.001

Cited by 66 publications

(33 citation statements)

References 34 publications

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“…The FT-IR spectroscopy conformed the capping and attach compounds to newly synthesized AgNPs. The prominent bands of absorption at 3334.7 cm (Paulraj et al 2011). …”

Section: Discussionmentioning

confidence: 99%

Assessment of toxicity in fresh water fish Labeo rohita treated with silver nanoparticles

2017

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Silver nanoparticles (17.78 ± 12.12 nm) were synthesized by the reduction of 0.5 M silver nitrate using formaldehyde as reducing and triethylamine as promoting and stabilizing agent. The particles were grain like agglomerates with spherical, centered-face cubic and crystalline in nature. The sample was highly pure with amine (NH) as associated and capping molecules. Further, the genotoxicity and oxidative stress of these particles were evaluated using Labeo rohita (L. rohita) as genetic model exposed (10-55 mg L -1 dose) through aquatic medium for 28 days. The cells were produced with micronuclei, fragmented, lobed and buds nuclei in dose dependent manner. The highest incidence of comet was recoded (27.34 ± 5.68) at 55 mg L -1 Ag-NPs and 14 days treatment. Then frequency was decreased to 22.65 ± 6.66% after 28 days due to complex repair mechanism. Moreover, the treatment also produces the oxidative stress and disturbs the level of GST in gill and liver tissue. There was a sharp decline in the activities of GST and this decrease of activity increase the MDA content. Further, the elevated level of GSH represents that the liver has started defensive mechanism against oxyraidcals. This study concluded, Ag-NPs are genotoxic in nature and produce micronuclei, comet cells and also induces oxidative stress in aquatic organisms.

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“…The FT-IR spectroscopy conformed the capping and attach compounds to newly synthesized AgNPs. The prominent bands of absorption at 3334.7 cm (Paulraj et al 2011). …”

Section: Discussionmentioning

confidence: 99%

Assessment of toxicity in fresh water fish Labeo rohita treated with silver nanoparticles

2017

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“…In recent years, there has been considerable interest in the system of electrode modification using nanoparticles and conducting polymers (Hussain et al 2003;Cong et al 2007;Feng et al 2008 Melendez et al 2010;Paulraj et al 2011;Dutse et al 2012). Therefore, in this work, a simple and low-cost electrochemical DNA biosensor was developed based on a poly(3,4-ethylenedioxythiophen)-poly(styrene sulfonate)-gold nanocomposite platform.…”

Section: Introductionmentioning

confidence: 97%

An Electrochemical Biosensor for the Determination ofGanoderma boninensePathogen Based on a Novel Modified Gold Nanocomposite Film Electrode

et al. 2014

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A sensitive approach for the determination of Ganoderma boninense DNA is reported based on an electrochemical affinity system using a modified gold sensor. Covalent attachment of probe DNA was achieved by attachment of the amine group to a carboxylic acid group of a 3,3'-dithiodipropionic acid monolayer on a nanocomposite film of gold nanoparticles bound to poly(3,4-ethylenedioxythiophen)-poly(styrenesulfonate) on a gold working electrode. The electrochemical detection of sequence-specific DNA of probe and target DNA hybridization was monitored using a new ruthenium complex [Ru(dppz) 2 (qtpy)Cl 2 ; dppz = dipyrido [3,2-a:2',3'-c] phenazine; qtpy = 2,2',-4,4".4'4"'-quarterpyridyl redox marker. The potential was selected through the study of the electrochemical behavior of trisaminomethane-hydrochloride containing a ethylenediaminetetraacetic acid supporting electrolyte on the bare and modified gold electrode. The effect of the hybridization temperature and time were measured. The sensor demonstrated specific detection for the target over a concentration range of 1.0 × 10 −15 M to 1.0 × 10 −9 M with a detection limit of 1.59 × 10 −17 M. Control experiments verified the specificity of the biosensor in the presence of a single mismatched DNA sequence. This detection technology was shown to be effective in terms of sensitivity and selectivity of hybridization events and is a promising device for early detection of Ganoderma boninense and other pathogenic threat agents.

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“…The band at *2854.13 cm -1 indicated the presence of asymmetric C-H stretch of the methyl and methylene groups. The FTIR peaks at *1637.27 and 1384.64 cm -1 contributed to amide and stretching vibration of NO 3-ion present in the nanocomposite (Paulraj et al 2011). The intense peaks at *1026.64 and 613.25 cm -1 denote the primary amine, CN stretch and alkyne C-H bends.…”

Section: Ftir Analysismentioning

confidence: 99%

Toxicity assessment on haemotology, biochemical and histopathological alterations of silver nanoparticles-exposed freshwater fish Labeo rohita

2015

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The increasing use of nano based-products induces the potential hazards from their manufacture, transportation, waste disposal and management processes. In this report, we emphasized the acute toxicity of silver nanoparticles (AgNPs) using freshwater fish Labeo rohita as an aquatic animal model. The AgNPs were synthesized using chemical reduction method and the formation of AgNPs was monitored by UV-Visible spectroscopy analysis. The functional groups, crystaline nature and morphological characterizations were carried out by fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and high resolution transmission electron microscopy (HRTEM) analysis. UV-Vis range was observed at 420 nm and XRD pattern showed that the particles are crystalline nature. HRTEM analysis revealed that the morphology of particles was spherical and size ranges between 50 and 100 nm. This investigation was extended to determine the potential acute toxicity, L. rohita was treated orally with the lethal concentration (LC 50 ) of AgNPs. The antioxidative responses were studied in the three major tissues such as gill, liver and muscle of L. rohita. The results of this investigation showed that increasing the concentration of AgNPs led to bioaccumulation of AgNPs in the major tissues. The haematological parameters showed significant alterations in the treated fish. The histological changes caused by chemically synthesized AgNPs demonstrated the damages in the tissues, primary lamella and blood vessels of L. rohita. The histological study also displayed the formation of vacuolation in liver and muscle when compared with untreated tissues (control) of L. rohita.

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Single pot synthesis of polyaniline protected silver nanoparticles by interfacial polymerization and study its application on electrochemical oxidation of hydrazine

Cited by 66 publications

References 34 publications

Assessment of toxicity in fresh water fish Labeo rohita treated with silver nanoparticles

Assessment of toxicity in fresh water fish Labeo rohita treated with silver nanoparticles

An Electrochemical Biosensor for the Determination ofGanoderma boninensePathogen Based on a Novel Modified Gold Nanocomposite Film Electrode

Toxicity assessment on haemotology, biochemical and histopathological alterations of silver nanoparticles-exposed freshwater fish Labeo rohita

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