White Emitting Magic Sized CdSe Nanoclusters Using Edible Oils: A Green Approach.

Herein; we present a green synthesis method for magic sized nanoclusters (MSNCs) of CdSe. The formation of MSNCs was examined using various edible oils viz; olive oil; mustard oil; castor oil; coconut oil and cod liver oil as capping agents. The source of Selenium is cyclo-octeno-1;2;3-selenadiazole which was decomposed (typically at 150 °C) in high boiling solvent.

Co/Co₃O₄ Based Nanoparticles and Their Polymer Composites for Tuned Electromagnetic Interference Shielding Application.

The magnetic properties of the metal nanoparticles (NPs) can play remarkable role in electromagnetic interference shielding (EMI Shielding) of many defence and commercial electronic devices. In the present work, coconut oil and PVA capped magnetic cobalt/cobalt oxide nanoparticles (Co/Co₃O₄ NPs) were synthesized by chemical reduction method and impregnated in polymer matrix to verify their EMI shielding behaviour. The coconut oil capped Co/Co₃O₄ NPs with presence of hcp and fcc phases were prepared in the size domain of 7-10 nm and the effect of surfactant (the oil) on size and oxidation state was studied by varying the ratios.

Ternary metal selenide/MWCNT/PANI: potential n-type nanohybrids for room-temperature thermoelectric applications.

Lead-free novel n-type ternary nanohybrids were fabricated by blending separately synthesized, diamond like I-III-VI and I-V-VI (I-Cu, Ag, III-In, V-Sb, VI-Se) nanocrystals (NCs) in a multi-walled carbon nanotube (MWCNT) and polyaniline (PANI) matrix. A thermoelectric study of these nanohybrids was performed at room temperature in order to understand their utility as potential thermoelectric materials for advanced applications. Electrical conductivity, thermal conductivity and Seebeck coefficient were measured and the thermoelectric performance was evaluated at room temperature.

Green Synthesis of Silver Nano-Particles by Use of Edible Oils.

Avoiding use of environmentally hazardous reducing agents and surfactants like sodium borohydride, hydrazine hydrate, alkyl amines and alkyl phosphines, the current article describes successful synthesis of silver nanoparticles via green synthesis by employing coconut, Indian gooseberry (amla), almond and mustard oils as capping as well as reducing agents. The presence of various fatty acids in such edible oils act as capping agents through their carboxylic acid functionality and control the growth of nanoparticles. A single step, simple synthetic method yielded silver nanoparticles which were characterized by UV-Visible, fluorescence spectroscopy, XRD, TEM and particle size analysis.

CdSe-PVP QDs for Degradation of Methylene Blue via Photocatalytic Oxidative Cleavage Under Mild Visible Light.

Present article describes, synthesis of polyvinyl pyrrolidone (PVP) capped CdSe quantum dots (QDs) at pH 5, 7 and 9 under controlled atmosphere. Spherical CdSe QDs in the size domain of 2 nm to 10 nm revealed cubic crystal structure from XRD analysis. The CdSe QDs synthesized at pH 7 showed highest specific surface area as compared to those synthesized at pH 5 and 9.

Particle size-independent induction of leucism in Drosophila melanogaster by silver: nano vs. micro.

With the discovery of nanoscience, silver nanoparticles (AgNPs) now appear on the ingredient lists of commercial products along with bulk silver or silver microparticles (AgMPs). In the present study, we have compared the effects of silver in both nano and micro forms to assess whether particle size plays a role in the pigmentation pathway, using Drosophila melanogaster as a model organism. AgNPs were synthesized, characterized and validated.

Polymer based graphene/titanium dioxide nanocomposite (GTNC): an emerging and efficient thermoelectric material.

Unlabelled: An ecofriendly procedure for the synthesis of graphene-titanium dioxide nanocomposites (GTNC) has been developed by dispersing nano-titanium dioxide (TiO2) and graphene nanosheets (GNSs) in ethanol via ultrasonication followed by microwave irradiation. Such nanohybrids were characterized by X-Ray Diffraction (XRD), High Resolution Transmission Electron Microscopy (HRTEM), Fourier Transform Infrared Spectroscopy (FTIR) and Raman spectroscopy. We have also demonstrated the synthesis of highly conductive composites like poly(3,4-ethylenedioxythiophene)polystyrene sulphonate (

Pedot: PSS)-GTNC, polyvinyl acetate (PVAc)-GTNC, PEDOT:PSS-graphene, and PVAc-graphene by ultrasonication followed by hot compaction towards their thermoelectric application.

"Green" synthesis of cadmium selenide nanocrystals: the scope of 1,2,3-selendiazoles in the synthesis of magic-size nanocrystals and quantum dots.

A range of cadmium selenide nano-particles (the quantum dots (QDs), the magic-size nano-crystals (MSNCs) or the mixture of two) have been synthesized by the use of organoselenium reagents viz. 1,2,3-selenadiazole and metal salts in an appropriate choice of long chain fatty acids e.g.

Cellular radioprotecting potential of glyzyrrhizic acid, silver nanoparticle and their complex.

Silver nanoparticles (SN) of particle size of less than 50nm were redispersed in aqueous solution of Pluronic F127 and complexed with the phytoceutical, glyzyrrhizic acid (GLY). Radioprotecting ability of the obtained nanoparticle-glyzyrrhizic acid complex (SN-GLY) was evaluated in an in vivo model using Swiss albino mice. Oral administration of SN-GLY, SN and GLY one hour prior to radiation exposure reduced the radiation induced damage in peripheral blood leucocytes, bone marrow cells and spleen cells of mice as revealed by comet assay.

Synthesis of nanosilver using a vitamin C derivative and studies on radiation protection.

Silver nanoparticles were prepared from silver nitrate using a vitamin C derivative, 6-palmitoyl ascorbic acid-2-glucoside (PAsAG), via a sonochemical experiment. The resultant golden yellow solution that contained silver nanoparticle-PAsAG complex (SN-PAsAG) of about 5 nm particle sizes was explored for its potential to offer protection to DNA from γ-radiation-induced damages. The presence of SN-PAsAG during irradiation inhibited the disappearance of covalently closed circular (ccc) form of plasmid pBR322 with a dose modifying factor of 1.

Silver nanoparticles embedded polymer sorbent for preconcentration of uranium from bio-aggressive aqueous media.

Adsorptive sorbent for bio-aggressive natural aqueous media like seawater was developed by one pot simultaneous synthesis of silver nanoparticles (Ag nps) and poly(ethylene glycol methacrylate phosphate) (PEGMP) by UV-initiator induced photo-polymerization. The photo-polymerization was carried out by irradiating N,N'-dimethylformamide (DMF) solution containing appropriate amounts of the functional monomer (ethylene glycol methacrylate phosphate), UV initiator (α,α'-dimethoxy-α-phenyl acetophenone), and Ag(+) ions with 365 nm UV light in a multilamps photoreactor. To increase mechanical strength, nano-composite sorbent (Ag@PEGMP) was also reinforced with thermally bonded non-woven poly(propylene) fibrous sheet.