Nirmal Bhargavi - Academia.edu (original) (raw)

Papers by Nirmal Bhargavi

Research paper thumbnail of Chromium speciation some effluents of tannery industries

Separation of chromium from Tannery effluents has been attempted. In this various physic chemical... more Separation of chromium from Tannery effluents has been attempted. In this various physic chemical characteristics of water contaminated by tannery effluents have been carried out. Electro kinetic remediation of soil contaminated with heavy metals from tannery effluents is the main aim of the present communication and towards this an attempt has been made to treat the simulated chromium spiked artificial soil. Electro kinetic remediation method has been attempted to remove chromium from the chromium spiked artificial soil and the results are presented and discussed in this communication.

Research paper thumbnail of Review on Silver Nanoparticle Synthesis Method, Antibacterial Activity, Drug Delivery Vehicles, and Toxicity Pathways: Recent Advances and Future Aspects

Journal of Nanomaterials

Silver nanoparticles in the range from 1 to 100 nm are widely used in industrial applications as ... more Silver nanoparticles in the range from 1 to 100 nm are widely used in industrial applications as catalysis, electronics, and photonics, and they have unique properties such as optical, electrical, and magnetic characteristics that can be used as antimicrobial, biosensor textile, cosmetics, composite fibers, and electronic components and to amend shelf life of food substances. The main objective of the present review was to focus on formulation methods of silver nanoparticles with recent advances and future aspects. Silver nanoparticle shows very high potential towards biological applications. Several physicals, chemical, and various biological techniques have been employed to synthesize and stabilize silver nanoparticles. For the manufacture of silver nanoparticles, multiple methods, including chemical simplification with different natural and inorganic decreasing agents, physicochemical reduction, electrochemical procedures, and radiolysis, are employed. Silver nanoparticles are th...

Research paper thumbnail of Synthesis of Zinc Oxide Nanoparticles by Hydrothermal Methods and Spectroscopic Investigation of Ultraviolet Radiation Protective Properties

Journal of Nanomaterials

Ultraviolet radiation causes damages to the human body, such as skin ageing, skin cancer, and all... more Ultraviolet radiation causes damages to the human body, such as skin ageing, skin cancer, and allergies throughout the world. Applying zinc oxide nanoparticles (ZnO NPs) in sunscreen products (like cloths or textiles) to protect human skin by absorbing the ultraviolet radiations that emerged from the sun. The main aim of this study is to investigate both absorbance and transmittance characteristics of the untreated and treated cotton textiles. For ZnO NPs using hydrothermal methods, they were made from Zn(NO3)2·6H2O and NaOH at a constant annealing temperature of 300°C. Fourier transform infrared (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and UV-vis spectroscopy were used to analyze the produced ZnO NPs. From the FT-IR result, ZnO NPs were observed in the region of 400-600 cm-1. Wurtzite hexagonal structure of ZnO NPs with the average crystal size 32 ± 49 nm was observed from XRD results. Flowers in the shape of synthesized ZnO NPs were observed from SEM ...

Research paper thumbnail of Chromium speciation some effluents of tannery industries

Separation of chromium from Tannery effluents has been attempted. In this various physic chemical... more Separation of chromium from Tannery effluents has been attempted. In this various physic chemical characteristics of water contaminated by tannery effluents have been carried out. Electro kinetic remediation of soil contaminated with heavy metals from tannery effluents is the main aim of the present communication and towards this an attempt has been made to treat the simulated chromium spiked artificial soil. Electro kinetic remediation method has been attempted to remove chromium from the chromium spiked artificial soil and the results are presented and discussed in this communication.

Research paper thumbnail of Review on Silver Nanoparticle Synthesis Method, Antibacterial Activity, Drug Delivery Vehicles, and Toxicity Pathways: Recent Advances and Future Aspects

Journal of Nanomaterials

Silver nanoparticles in the range from 1 to 100 nm are widely used in industrial applications as ... more Silver nanoparticles in the range from 1 to 100 nm are widely used in industrial applications as catalysis, electronics, and photonics, and they have unique properties such as optical, electrical, and magnetic characteristics that can be used as antimicrobial, biosensor textile, cosmetics, composite fibers, and electronic components and to amend shelf life of food substances. The main objective of the present review was to focus on formulation methods of silver nanoparticles with recent advances and future aspects. Silver nanoparticle shows very high potential towards biological applications. Several physicals, chemical, and various biological techniques have been employed to synthesize and stabilize silver nanoparticles. For the manufacture of silver nanoparticles, multiple methods, including chemical simplification with different natural and inorganic decreasing agents, physicochemical reduction, electrochemical procedures, and radiolysis, are employed. Silver nanoparticles are th...

Research paper thumbnail of Synthesis of Zinc Oxide Nanoparticles by Hydrothermal Methods and Spectroscopic Investigation of Ultraviolet Radiation Protective Properties

Journal of Nanomaterials

Ultraviolet radiation causes damages to the human body, such as skin ageing, skin cancer, and all... more Ultraviolet radiation causes damages to the human body, such as skin ageing, skin cancer, and allergies throughout the world. Applying zinc oxide nanoparticles (ZnO NPs) in sunscreen products (like cloths or textiles) to protect human skin by absorbing the ultraviolet radiations that emerged from the sun. The main aim of this study is to investigate both absorbance and transmittance characteristics of the untreated and treated cotton textiles. For ZnO NPs using hydrothermal methods, they were made from Zn(NO3)2·6H2O and NaOH at a constant annealing temperature of 300°C. Fourier transform infrared (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and UV-vis spectroscopy were used to analyze the produced ZnO NPs. From the FT-IR result, ZnO NPs were observed in the region of 400-600 cm-1. Wurtzite hexagonal structure of ZnO NPs with the average crystal size 32 ± 49 nm was observed from XRD results. Flowers in the shape of synthesized ZnO NPs were observed from SEM ...