Biosynthesis of silver nanoparticles by using Camellia japonica leaf extract for the electrocatalytic reduction of nitrobenzene and photocatalytic degradation of Eosin-Y

Karthik, Raj; Govindasamy, Mani; Cheng, Yongqiang; Muthukrishnan, P.; Padmavathy, S.; Elangovan, Arumugam

doi:10.1016/j.jphotobiol.2017.03.018

Cited by 96 publications

(30 citation statements)

References 43 publications

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“…The obvious solution to stabilize nanoparticles and thus prevent their agglomeration, is the use of stabilizers. The selection of stabilizers for silver nanoparticles covers a wide range of various types of simple and complex molecules such as sugars [ 28 ], starch [ 8 ], oligomeric calixarenes [ 34 ], cyclodextrins [ 35 ] or even biological systems [ 5 , 36 , 37 , 38 , 39 ]. A significant number of silver nanoparticle stabilizers are related to the application of polymers such as polystyrene [ 40 ], polyvinylpyrrolidone [ 17 , 22 , 23 , 24 ], polyisopropylacrylamide [ 41 ], hydroxyethylcellulose, polyvinylalcohol [ 23 ], and others.…”

Section: Introductionmentioning

confidence: 99%

Silver Nanoparticles Stabilised by Cationic Gemini Surfactants with Variable Spacer Length

et al. 2017

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The present study is focused on the synthesis and investigation of the physicochemical and biological properties of silver nanoparticles stabilized with a series of cationic gemini surfactants having a polymethylene spacer of variable length. UV-VIS spectroscopy, dynamic light scattering, scanning electron microscopy and zeta potential measurements were applied to provide physicochemical characterization of the silver nanoparticles. The mean size values of the nanoparticles were found to be in the 50 to 115 nm range. From the nanoparticle size distributions and scanning electron microscopy images it results that a population of small nanoparticles with the size of several nanometers was confirmed if the nanoparticles were stabilized with gemini molecules with either a short methylene spacer (two or four −CH2− groups) or a long spacer (12 −CH2− groups). The average zeta potential value for silver nanoparticles stabilized with gemini molecules is roughly independent of gemini surfactant spacer length and is approx. +58 mV. An interaction model between silver nanoparticles and gemini molecules which reflects the gained experimental data, is suggested. Microbicidal activity determinations revealed that the silver nanoparticles stabilized with gemini surfactants are more efficient against Gram-negative bacteria and yeasts, which has a direct relation to the interaction mechanism of nanoparticles with the bacterial cell membrane and its structural composition.

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Section: Introductionmentioning

confidence: 99%

Silver Nanoparticles Stabilised by Cationic Gemini Surfactants with Variable Spacer Length

et al. 2017

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“…However, an anodic peak potential appeared at -0.026 V with reduction peak at -0.109 V during the cathodic segment. The observed CV curve respect to the oxidation of phenylhydroxylamine to nitrosobenzene (Scheme 1) [3,17]. Therefore, CeO 2 /SPCE has the better sensitive electrochemical detection for NB.…”

Section: Electro-catalysis Behavior Of Nb At Ceo 2 Nps/spcementioning

confidence: 96%

“…Nitrobenzene (NB) is an important aromatic nitro compound, which suspected as carcinogenic and has been extensively used as an intermediate or precursor in chemical syntheses such as various azo dyes, aniline, pesticides, explosives, herbicides and pharmaceutical synthesis [1,2]. Since, it was used in the preparation of shoe polishing materials, the production of pyroxylin materials, soap, and used as a solvent [3]. As a result, the bulk amount of NB is released in soil and water source.…”

Section: Introductionmentioning

confidence: 99%

A Facile synthesis of ultra-small cerium oxide nanoparticles for enhanced Electrochemical Detection of Nitrobenzene in water samples

Sangili¹

2018

International Journal of Electrochemical Science

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The ultra-small cerium oxide nanoparticles (CeO 2 NPs) have been synthesized by the hydrothermal process. The structure and morphology of as-prepared nanoparticle were studied by transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDX). The results confirm that the morphology of CeO 2 NPs was obtained uniform and spherical structure with the size ranging from approximately 2˗5 nm. The obtained CeO 2 NPs was evaluated by the electrochemical sensing of nitrobenzene (NB). In order to, the sensor based on the modified SPCE exhibits good electrocatalytic activity and the sensitivity was about 1.1166 µA µM -1 cm -1 . Remarkably, the CeO 2 NPs modified electrode showed the excellent lowest detection limit 0.092 µM over the linear range from 0.1 to 520 µM. Moreover, the ultra-small CeO 2 NPs was established good recoveries towards the determine the NB in tap water and river water samples.

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“…). 81 The newly formed oxygen anions further react with water to generate many oxidative species which causes dye degradation. 82 Parkia roxburghii, 83 and Diplazium esculentum 84 silver nanoparticles showed effective degradation of methylene blue and rhodamine B through NaBH 4 , indicating that silver nanoparticles caused structural changes and removed chromophore group from the dye.…”

Section: −mentioning

confidence: 99%

“…76 Catalytic degradation process is initiated by the striking of colloidal silver nanoparticles by photons of sunlight and the degradation mechanism involving the excitation of conduction electrons of metallic Ag through surface plasmon resonance effect. 88 Catalytic reduction of Allura red and Congo red, Eosin Y, Green Pls, Bromo phenyl blue under visible light was done using NaBH 4 in presence of silver nanoparticles synthesised from Ekebergia capensis, 89 Camellia japonica, 90 Dicrostachys cinerea, 91 and Cirsium japonicum 80 extracts respectively. NaBH 4 or sunlight alone is unable to bring about effective dye degradation.…”

Section: −mentioning

confidence: 99%

Treatment of Water Effluents Using Silver Nanoparticles

Mathew

Punnoose

2018

MSEIJ

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The water from industries with potential hazardous organic matters when discharged into the water bodies cause undesirable effects to the environment, aquatic life and human health. So it is necessary to treat waste water prior to their disposal. Degradation of organic pollutants is a major concern in the present scenario due to its stability, fastness to sunlight, resistance to degrading agents or microbial attack. It is mainly achieved by silver metal nanoparticles synthesised by green route. Degradation of dyes using metal nanoparticles is an environmental benign method. Silver metal nanoparticles show high catalytic potential due to its unique property of smaller structure and large surface to volume ratio. This review provides a detailed report of the degradation of various organic pollutants by phyto synthesised silver metal nanoparticles.

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Biosynthesis of silver nanoparticles by using Camellia japonica leaf extract for the electrocatalytic reduction of nitrobenzene and photocatalytic degradation of Eosin-Y

Cited by 96 publications

References 43 publications

Silver Nanoparticles Stabilised by Cationic Gemini Surfactants with Variable Spacer Length

Silver Nanoparticles Stabilised by Cationic Gemini Surfactants with Variable Spacer Length

A Facile synthesis of ultra-small cerium oxide nanoparticles for enhanced Electrochemical Detection of Nitrobenzene in water samples

Treatment of Water Effluents Using Silver Nanoparticles

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