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86 articles for “transmission electron microscope”
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Evaluation of Antibacterial Activities of Environmental Benign Synthesis of Silver Nanoparticles using the Flower Extracts of Plumeria Alba Linn.
Abstract: Green nanoparticle synthesis has been achieved using environmentally acceptable plant extract and ecofriendly reducing and capping agents. However, development of green nanotechnology is generating interest of researchers toward ecofriendly biosynthesis of nanoparticles. In this study green synthesis of stable silver nanoparticle was done using the flower extract of Frangipani (Plumeria alba). The formation of silver nanoparticles was apparently displayed within 2 min with evidence of surface plasmon bands (SPB) between …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 3, Issue 3, 2013 · pp. 13–20 Read article
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Structural and Magnetic Property Studies of Nanocrystalline Co0.8Zn0.2Fe2O4
Abstract: The synthesis of Co0.8Zn0.2Fe2O4 nanoparticles has been achieved by a simple thermal decomposition method from the inorganic precursor, Co0.8Zn0.2Fe2(cin)3(N2H4)4, which was obtained by a novel precipitation method from the corresponding metal salts, cinnamic acid and hydrazine hydrate. The precursor was characterised by hydrazine and metal analyses, infrared spectral analysis and thermo gravimetric analysis. The thermal decomposition of Co0.8Zn0.2Fe2(cin)3(N2H4)4 yielded Co0.8Zn0.2Fe2O4 nanoparticles, which were characterised for their size and structure using …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 5, Issue 3, 2015 · pp. 67–73 Read article
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Efficient Green Synthesis of TiO2 Nanoparticles Using Murraya koenigii Leaf Extract
Abstract: Green synthesis of nanoparticles by plant extract is at present under exploitation due to eco-friendly, non-toxic and inexpensive process. Titanium dioxide (TiO2) nanoparticles were synthesized by ultrasound assisted sol-gel precipitation method using titanium tetra-isopropoxide as a precursor and Murraya koenigii leaf extract as a reducing and stabilizing agent. The leaf extract was prepared under various solvent media such as ethanol and distilled water under controlled ultrasonication. Due to effective ultrasound, …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 6, Issue 1, 2016 · pp. 29–38 Read article
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Synthesis and Synergistic Effects of Ciprofloxacin Conjugated Zinc Oxide Nanoparticles
Abstract: Zinc oxide nanoparticles (ZnO NPs) are known as a multifunctional material because of its unique physical and chemical properties. The result of zinc oxide nano powder was characterized using various analytical techniques, such as UV-Vis spectroscopy, Fourier Transform Infra-Red (FTIR), Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM) and X-Ray Diffraction (XRD) patterns. Synthesized zinc oxide nano powder was stored in dried form in the room temperature for further study. …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 9, Issue 1, 2019 · pp. 61–71 Read article
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Role of Hot-Injection Technique for the Synthesis of Phase-Pure Kesterite CZTS Nanocrystals for Biosensing Applications
Abstract: Main Focus in this present work, is biosensing application of CZTS nanoparticle instead of established and mainstream photovoltaics application. Here, biocompatible CZTS have been synthesized using butylamine. The capping effect has been explored in two ways first, post synthesis ligand exchange from TOPO-capped CZTS (Ex-situ) and during synthesis (In-situ). The sample obtained after ex-situ ligand exchange was analysed for its stability using x-ray diffraction method (XRD), transmission electron microscopy (TEM) …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 20, Issue 3, 2018 · pp. 6–12 Read article
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A Detail Opto-electronic and Photocatalytic Study of Amorphous Carbon Nanotubes—MoS2 Hybrids
Abstract: Amorphous carbon nanotube – MoS2 nanohybrids were synthesized by simple hydrothermal method where two different precursor, thiourea and L-cysteine were used as a source of sulfur. Amorphous carbon nanotube has been prepared separately by a low temperature chemical process. Amorphous carbon nanotube-MoS2 nanohybrids were characterized by using X-ray diffraction, energy dispersive X-ray analysis, field emission scanning and high resolution transmission electron microscope, Raman spectrometer. Dye removal (from water) performance of …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 21, Issue 2, 2019 · pp. 19–30 Read article
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Effect of the Annealing Temperature on CdS Nanoparticles Synthesized by Chemical Precipitation Technique and also Characterized for its Potential Technological Applications
Abstract: Cadmium Sulfide (CdS) nano particles are synthesized by chemical precipitation method. Cadmium Chloride and Thiourea are used as the precursor materials. Ammonia water & distilled water are used as solvent. The samples are annealed at 100°C, 300°C and 500°C for 1 hour. Transmission electron microscopy (TEM), Energy–dispersive X-ray spectroscopy (EDAX), and X-ray diffraction pattern (XRD) are used to study the morphologies, distribution, and crystallinity of the CdS nanoparticles and to …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 23, Issue 3, 2021 · pp. 20–28 Read article
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Facile Synthesis of Highly Uniform Selenium Nanoparticles with Antibacterial Activity on Bacillus subtilis
Abstract: In the light of diverse applications of Selenium nanoparticles in biomedical applications, a facile procedure has been developed to synthesize highly stable and monodisperse nanoparticles with Polysorbate 20 at room temperature. Transmission electron microscopy analysis revealed that the Selenium nanoparticles (Se NPs) were spherical in shape with uniform size of 43 nm. The antibacterial activity of Se NPs was investigated against Bacillus subtilis as a model gram-positive bacteria which showed …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 10, Issue 2, 2020 · pp. 26–31 Read article
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Structural and Electrical Characterization of Mn-Zn Substituted CaSr2: W-Type Hexaferrite
Abstract: AbstractIn the present investigation the samples with chemical composition CaSr2 (Mn-Zn)x/2Fe16- xO27 (x= 0.2, 0.4, 0.6, 0.8, 1.0) have been synthesized by using chemical co-precipitation method. X-ray diffraction (XRD) and transmission electron microscopy (TEM) were used to study structure, lattice constants, crystallites size, x-ray density, bulk density, porosity and shape of ferrite powders. The prepared samples were found to have W-type hexagonal structure with the lattice parameters a= (5.77 Å–5.82 …
Published in Research & Reviews : Journal of Physics · Vol. 5, Issue 1, 2016 · pp. 11–17 Read article
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Green synthesis of zinc oxide and copper oxide nanoparticles and their effect against wilt fungus, Fusarium udum.
Abstract: Nowadays nanoparticles (NPs) come out as powerful tools to enhance crop production and protection. Biosynthesis of NPs has a vital role and an alternate to chemical and physical methods because it is simple, easy, eco-friendly, and free from chemical hazards. Zinc oxide (ZnO) and copper oxide (CuO) NPs were synthesized from leaves extract of Lantana camara (L.) and Nerium oleander (L.) and characterized by using several techniques such as transmission …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 13, Issue 3, 2023 · pp. 1–5 Read article
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Study of Size Controllable Synthesis of Indium Tin Oxide Nanoparticles and Their Different Characterizations
Abstract: Nanocrystalline indium oxide powders were prepared by combustion synthesis. The changes of nanostructure caused by material processing were studied using X-ray powder diffraction (XRD), transmission electron microscopy (TEM), selected area electron diffraction (SAED) and Brummer Emette teller analysis (BET). The stoichiometric composition of the starting indium tin oxide powder (cubic in traces) induced phase transitions to high temperature. We found that the phase transition to ITO was initiated at the …
Published in Research & Reviews : Journal of Physics · Vol. 1, Issue 2, 2012 · pp. 9–18 Read article
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Anti-tumour Effects of Green Synthesis of Silver Nanoparticles from Helicteres isora L: In Vitro Approach
Abstract: Green synthesized silver nanoparticles preparation from 1mM AgNo3 solution through the fruit extract of Helicteres isora. in the range of 24–30 nm with increased stability and enhanced anti-tumour potency were reported in this present study. Green synthesized silver nanoparticles from fruit extract of H. isora (Hif-AgNPs) were characterized by using UV-VIS absorption spectroscopy and the morphology of the nanoparticles was characterized by transmission electron microscopy (TEM). The anti-tumour efficacy was …
Published in Trends in Drug Delivery · Vol. 5, Issue 1, 2018 · pp. 1–5 Read article
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Formulation Development, Characterization and in-vitro Evaluation of Nano-Lipid Carriers of Ropinirole HCl for Persistent Parkinsonian Management
Abstract: According to a report of World Health Organization (WHO) 2014, Parkinson's Disease (PD) is the second-most neurodegenerative dysfunction of the central nervous system (CNS) of human being effecting 7–10 million people worldwide. It is primarily due to the death of dopamine-generating cells in the substantia-nigra of midbrain. It is symptomatized by tremor, rigidity, bradykinesia, dementia, depression and falls or emerges with the progression of the disease. Ropinirole HCl is a …
Published in Trends in Drug Delivery · Vol. 6, Issue 1, 2019 · pp. 14–23 Read article
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A Review on Novel Emulsification Technique: A Nanoemulsion
Abstract: Kinetically stable and isotropic system of submicron size range is the nanoemulsion. In this system two immiscible liquids are mixed together to form a single-phase system with the identical concentration and ratio of surfactant and cosurfactant. Nanoemulsion droplet sizes fall typically in the range of 20- 200 nm. Some literature suggest this range below 100 nm with shows narrow size distribution. In this review, major focus is given on the …
Published in Trends in Drug Delivery · Vol. 3, Issue 2, 2016 · pp. 25–34 Read article
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Antifungal Activity of Zero-valent Iron Nanoparticles Synthesized by Green Protocols Using Camellia sinensis Extract against Pathogenic Aspergillus Species
Abstract: Zero-valent iron nanoparticles with potential antifungal activity were synthesized following a green protocol using Camellia sinensis leaves extract. FeSO4.7H2O was reduced to black metallic iron by Camellia sinensis leaves extract. The green synthetic procedure without using any hazardous chemical reagents is hopeful which reduces the possibility of chemical pollution. The synthesized nanoparticles were characterized by UV/visible and fluorescence spectroscopies. The surface morphology, size, shape and particle distribution were studied using …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 8, Issue 3, 2017 · pp. 40–45 Read article
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Inclusion of Gallium Oxide with Silver Oxide of Tunable Optical Properties for their Unusual Catalytic Performances
Abstract: AgGaO2 nanocomposites were prepared by hydrothermal synthesis. The crystal was assessed using Scherer equation for the as-prepared nanoparticles and annealed samples of AgGaO2 at 40 and 55 nm, respectively. Silver and gallium nitrates were reacted in an alkaline medium using NaBH4, which was used to reduce particle size. The presence of relatively homogeneous nanocomposites was confirmed by X-ray diffraction. Morphological studies were analyzed by transmission and scanning electron microscopy. Vibration …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 9, Issue 2, 2019 · pp. 46–55 Read article
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Isolation, Identification and Characterization of Bdellovibrio sp. from Soil and its Antibiotic Potential against Selected Bacterial Pathogens
Abstract: Bdellovibrio and Like Organisms (BALOs) are the world's smallest Gram-negative, highly motile delta-proteobacterial predators generally found in diverse environmental niches such as soil, seawater, sewage, bio films, freshwater, gastro intestinal tract of animals and in association with plant roots. These small bacteria attack gram negative bacterial strains attaching to the outer membrane and consuming the prey extracellularly (epibiotic predation) or penetrating their periplasm (periplasmic predation). Bdellovibrio exovorus MPR11 (Accession No. …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 9, Issue 1, 2019 · pp. 119–130 Read article
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Preparation, Characterization and Electrical Conductivity of Chitosan-C 30B/MWCNT Nanocomposite Films
Abstract: In this research programme organoclay clay Cloisite 30B (C 30B) and Multi walled carbon nanotubes (MWCNTs) were successfully blended with the biopolymer Chitosan (CS). The polymer nanocomposites were characterised by various techniques like Fourier Transmission Infrared spectroscopy (FTIR), X-ray Diffraction (XRD) and Scanning Electron Microscope (SEM). From the results it was found that intercalation or nearly exfoliation has been occurred between the polymer and the clay. Electrical conductivity was also …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 18, Issue 3, 2016 · pp. 1–4 Read article
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Synthesis and Characterization of In2S3 Nanoflake Thin Film for Photosensor Applications
Abstract: Indium sulphide (In2S3) thin films in the form of nanoflakes are synthesized by using chemical vapour deposition method on glass substrate with the intension to test its photosensor applications. These as deposited nanoflake thin films are characterized for physicochemical properties using X-ray diffraction (XRD) pattern, energy dispersive X-ray (EDAX) analysis,scanning electron microscopy (SEM) while optoelectronic properties were studied using optical and electrical characteristics obtained through UV-Vis transmission spectroscopy and I-V …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 4, Issue 3, 2017 · pp. 21–26 Read article
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Development of PLLA-based Bio Inks Applicable in the Medical Field
Abstract: Some synthetic polymers, such as Poly (L-lactic acid) (PLLA), are interesting to use in 3D bioprinting because they can have adaptable and resilient mechanical properties that also facilitate bioprinting processes. PLLA is a biocompatible polymer which makes it very interesting for medical applications, it is an aliphatic polyester obtained from α-hydroxy acids in different ways: ring-opening polymerization, and direct polycondensation. The use of one path over the other depends on …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 24, Issue 2, 2022 · pp. 38–46 Read article