Author
Deepti Yadav
Bio: Deepti Yadav is an academic researcher. The author has contributed to research in topics: Nanorod & Nanoparticle. The author has an hindex of 2, co-authored 2 publications receiving 477 citations.
Papers
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TL;DR: In this paper, zinc oxide nanoparticles were prepared by a wet chemical method using zinc nitrate and sodium hydroxide as precursors and soluble starch as stabilizing agent.
Abstract: Nanotechnology, according to the National Nanotechnology Initiative (NNI), is defined as utilization of structure with at least one dimension of nanometer size for the construction of materials, devices or systems with novel or significantly improved properties due to their nano-size. The nanostructures are capable of enhancing the physical properties of conventional textiles, in areas such as anti-microbial properties, water repellence, soil-resistance, anti-static, anti-infrared and flame-retardant properties, dyeability, colour fastness and strength of textile materials. In the present work, zinc oxide nanoparticles were prepared by wet chemical method using zinc nitrate and sodium hydroxide as precursors and soluble starch as stabilizing agent. These nanoparticles, which have an average size of 40 nm, were coated on the bleached cotton fabrics (plain weave, 30 s count) using acrylic binder and functional properties of coated fabrics were studied. On an average of 75%, UV blocking was recorded for the cotton fabrics treated with 2% ZnO nanoparticles. Air permeability of the nano-ZnO coated fabrics was significantly higher than the control, hence the increased breathability. In case of nano-ZnO coated fabric, due to its nano-size and uniform distribution, friction was significantly lower than the bulk-ZnO coated fabric as studied by Instron® Automated Materials Testing System. Further studies are under way to evaluate wash fastness, antimicrobial properties, abrasion properties and fabric handle properties.
423 citations
TL;DR: Well-crystallized zinc oxide nanorods have been fabricated by single step solid-state reaction using zinc acetate and sodium hydroxide, at room temperature with the advantage of eco-friendliness since the solvent and other harmful chemicals were eliminated in the synthesis protocol.
117 citations
TL;DR: In this article , the toxicity of ketamine and its recuperation by phytochemicals of Citrus limon leaves extract was determined, where fishes were collected, acclimatized and divided into 6 groups of 5 fishes each.
Abstract: This paper determines the toxicity of ketamine and its recuperation by phytochemicals of Citrus limon leaves extract. Fishes were collected, acclimatized & divided into 6 groups of 5 fishes each. Ist group served as control whereas, IInd group was treated with ketamine alone. IIIrd & IVth groups were treated with different concentrations of phytochemical and Vth & VIth groups were given ketamine with Phytochemical. After 96 hours total protein (TPRO) & creatinine levels were tested using autoanalyser from supernatant of liver and muscle tissues. Ketamine showed adverse effect on the protein concentration as well as in creatinine concentration, whereas at different concentrations, phytochemicals did not have any adverse impact and also helped in the suppression of toxic effect of ketamine. Some behavioural changes were observed after the treatment with ketamine. However such aberrant behaviour was absent in control fishes.
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TL;DR: The most important methods of preparation of ZnO divided into metallurgical and chemical methods are presented and possible applications in various branches of industry: rubber, pharmaceutical, cosmetics, textile, electronic and electrotechnology, photocatalysis were introduced.
Abstract: Zinc oxide can be called a multifunctional material thanks to its unique physical and chemical properties. The first part of this paper presents the most important methods of preparation of ZnO divided into metallurgical and chemical methods. The mechanochemical process, controlled precipitation, sol-gel method, solvothermal and hydrothermal method, method using emulsion and microemulsion enviroment and other methods of obtaining zinc oxide were classified as chemical methods. In the next part of this review, the modification methods of ZnO were characterized. The modification with organic (carboxylic acid, silanes) and inroganic (metal oxides) compounds, and polymer matrices were mainly described. Finally, we present possible applications in various branches of industry: rubber, pharmaceutical, cosmetics, textile, electronic and electrotechnology, photocatalysis were introduced. This review provides useful information for specialist dealings with zinc oxide.
1,790 citations
TL;DR: In this article, the requirements for antimicrobial finishing, qualitative and quantitative evaluations of antimicrobial efficacy, the application methods of antimacterial agents and some of the most recent developments in antimicrobial treatments of textiles using various active agents such as silver, quaternary ammonium salts, polyhexamethylene biguanide, triclosan, chitosan, dyes and regenerable N-halamine compounds and peroxyacids.
Abstract: The growth of microbes on textiles during use and storage negatively affects the wearer as well as the textile itself. The detrimental effects can be controlled by durable antimicrobial finishing of the textile using broad-spectrum biocides or by incorporating the biocide into synthetic fibers during extrusion. Consumers' attitude towards hygiene and active lifestyle has created a rapidly increasing market for antimicrobial textiles, which in turn has stimulated intensive research and development. This article reviews the requirements for antimicrobial finishing, qualitative and quantitative evaluations of antimicrobial efficacy, the application methods of antimicrobial agents and some of the most recent developments in antimicrobial treatments of textiles using various active agents such as silver, quaternary ammonium salts, polyhexamethylene biguanide, triclosan, chitosan, dyes and regenerable N-halamine compounds and peroxyacids. Examples of commercial antimicrobial products are presented to illustrate...
967 citations
TL;DR: The toxicity of zinc oxide to bacteria was related to the generation of reactive oxygen species and to the induction of apoptosis, and these effects were differentially greater in human myeloblastic leukemia cells (HL60) than normal peripheral blood mononuclear cells.
910 citations
TL;DR: In this article, the synthesis and characterization of nanosized zinc oxide particles and their application on cotton and wool fabrics for UV shielding were reported, and the effectiveness of the treatment was assessed through UV-Vis spectrophotometry and the calculation of the ultraviolet protection factor (UPF).
Abstract: We report the synthesis and characterization of nanosized zinc oxide particles and their application on cotton and wool fabrics for UV shielding. The nanoparticles were produced in different conditions of temperature (90 or 150 °C) and reacting medium (water or 1,2-ethanediol). A high temperature was necessary to obtain small monodispersed particles. Fourier transformed infrared spectroscopy (FTIR), transmission electron microscopy (TEM), and X-ray powder diffractometry (XRD) were used to characterize the nanoparticles composition, their shape, size and crystallinity. The specific surface area of the dry powders was also determined. ZnO nanoparticles were then applied to cotton and wool samples to impart sunscreen activity to the treated textiles. The effectiveness of the treatment was assessed through UV–Vis spectrophotometry and the calculation of the ultraviolet protection factor (UPF). Physical tests (tensile strength and elongation) were performed on the fabrics before and after the treatment with ZnO nanoparticles.
823 citations
TL;DR: In this paper, the synthesis of nanostructured zinc oxide nanoparticles by both chemical and biological method was reported, and the results showed that the particles obtained were poly dispersed and the average size ranged from 25 to 40nm.
758 citations