Tapas Sahoo

• PhD
• Professor (Associate) at KIIT University

Pure CeO2 and Ce1‐xMnxO2, where x = 0, 2, 4 and 6% w/w, were synthesized by sol‐gel method using Acacia Concinna fruit extract as a surfactant and stabilizing agent. The synthesized particles were subjected to various characterization techniques, including XRD, HRTEM, FESEM, FTIR, Raman and UV‐Visible spectroscopy. The XRD pattern of the samples de...

The fast growth of human civilization with rapid industrialization causes severe detrimental effects, as a result, freshwater sources are depleting day by day threatening the future of human civilization to the water crisis. It is essential to preserve water by eliminating pollutants and conserving it. Dyes are one of such toxic pollutants which ha...

Undoped hausmannite manganese oxide (Mn3O4) and Ni doped Mn3O4 (2%, 4% and 6%) nanoparticles have been successfully synthesized using acacia concinna fruit extract by a simple one-pot sol gel method without the use of organic solvent. The synthesized nanoparticles were characterized by various techniques like PXRD (Powder X-Ray Diffraction), FTIR (...

Nanomaterials have enabled extraordinary technical breakthroughs relative to bulk materials because of their unique properties. In this study, we have synthesized CeO 2 and Ce 1− x Fe x O 2 ( x = 0.02, 0.04 and 0.06 w/w) nanoparticles by the sol–gel method using acacia concinna fruit extract. The crystallite size of 22.7 nm for CeO 2 and varied fro...

The present research demonstrates the green synthesis of CeO 2 nanoparticles (NPs) using the Acacia Concinna fruit extract by sol-gel route. The synthesized CeO 2 NPs are applied for the adsorptive removal of Reactive Blue (RB) azo dye and antimicrobial activities. The CeO 2 NPs are characterized using different techniques e.g. X-ray Diffraction Sp...

The release of furfural as effluent from industries has been considered a major pollution source since it adversely affects health and the environment. In a proper nutrient condition, the indigenous microbial removal process is always considered efficient, economical, and eco-friendly. Thus, the main objective is to employ the effective indigenous...

Nanomaterials have enabled extraordinary technical breakthroughs in bulk materials because of their diversified applications. In this paper, we have synthesized CeO2 and Ce1-x FexO2 (where, x = 0.02, 0.04, and 0.06 w/w) nanoparticles (NPs) via sol–gel method while employing the acacia concinna fruit extract as the surfactant. Various techniques hav...

This study aimed to prepare Ce1-xNixO2 (where × = 0.02, 0.04, and 0.06 w/w) nanoparticles (NPs) utilizing Acacia Concinna fruit extract as surfactant in a cost-efficient way. Sol-gel technique was used to synthesize both CeO2 and Ni-doped CeO2 NPs in a bio-synthesis method. XRD spectroscopy, FTIR, SEM, Raman spectroscopy, etc., were applied to char...

In this article, we have synthesized CeO2 and Co-doped CeO2 nanoparticles (NPs) using the sol–gel method in a greener route by using Acacia Concinna fruit extract as a natural surfactant. Different doping concentrations of Ce1-xCoxO2 (where x = 0.02, 0.04, and 0.06 w/w) were prepared by adding varying concentrations of cobalt nitrate to ceric ammon...

Green synthesis of manganese oxide nanoparticles (NPs) was carried out by sol-gel method using Acacia Concinna fruit extract for removal of reactive dye. The effect of calcination temperature on its morphology was investigated. α-MnO2 and Mn3O4 NPs were synthesized at 400 °C and 900 °C respectively and were characterized by PXRD, SEM, TEM, FTIR, BE...

The composite insulating materials are major parts of various electrical devices because of their synergetic effect. The primary aim is to study the dielectric properties of nanoscale MgO and Zn-doped MgO nanoparticles (NPs). MgO and a series of (2, 4 and 6%) Zn-doped MgO NPs were synthesized by microwave-assisted combustion route. The samples were...

Cubic phase of MgO nanoparticles were prepared by microwave-assisted combustion synthesis and investigated for the removal of toxic dyes like Congo Red (CR) and Trypan blue (TB). The crystallite size of the MgO nanoparticle was calculated to be 18 nm from XRD pattern. The sample was further characterized by FTIR, TGA and FESEM techniques. The dyes...

In this present article, zinc oxide nanoparticles (NPs) have been synthesized by a greener approach using Acacia concinna fruit extract via sol–gel technique. These biosynthesized ZnO NPs were characterized by XRD, SEM, FTIR, BET and HRTEM techniques. The XRD pattern revealed the samples are crystalline and having hexagonal ZnO phase with wurzite t...

Herein, polyphenol stabilized gold nanoparticles (AuNPs) have been synthesized for selective removal of cationic dyes from aqueous solution. Gold nanoparticles have been synthesized using Cassytha filiformis plant extract and characterized by UV-visible spectroscopy (UV-vis), High-Resolution Transmission Electron Microscopy (HR-TEM) and X-ray diffr...

Nanomaterials are of much interest and are considered as efficient adsorbents for wastewater treatment because of their small particle sizes, large specific surface areas, abundant reactive sites, and nanostructures. In this chapter, the adsorption phenomena at the solid/liquid interface are outlined, together with the most commonly used theoretica...

TiO2 nanoparticles have been synthesized by co-precipitation method and is used as an adsorbent for removal of toxic Congo Red (CR) dye. The resulting adsorbent TiO2 was characterized by X-ray powder diffraction pattern, confirming the rutile phase of TiO2 nanoparticle. Adsorption equilibrium data were evaluated by Langmuir isotherm and Freundlich...

The Mg–Sc alloy leach solution bearing 2.5 g/L Sc(III), 25.0 g/L Mg(II) and 0.5 M HCl was subjected to investigate for separation of Sc(III) by hollow fibre liquid membrane (HFLM) followed by its recovery through oxalate precipitation route. Ionic liquid (IL) R4ND derived from commercial organo-phosphoric acid (D2EHPA) and aliquot-336 was used as c...

In this study, rutile phase of TiO2 particles have been synthesized by co-precipitation method and is used as an adsorbent for removal of toxic azo dye Eriochrome black-T (EBT) from aqueous solution. The rutile phase of TiO2 was confirmed by the X-ray powder diffraction pattern. Effect of initial dye concentration, adsorbent dose, pH, agitation spe...

Nanotechnology is considered to play a key role in shaping current environmental engineering and science in this twenty-first century. The way the nanoscale science research is progressing in the development and use of novel and cost-effective technologies for adsorptive removal, catalytic degradation, and detection of contaminants as well as other...

This article, deals with a microwave-assisted polyol method to demonstrate a low temperature route < 250°C, to prepare a high temperature cubic zirconia phase. Powder XRD pattern shows broad diffraction peaks suggesting nanometric size of the particles. Magnetic behavior of 1-5 at% Ni doped samples show a threshold for substitutional induced room t...

Study on removal of Xylenol Orange (XO) from aqueous solution was investigated using synthesized ZnO nano particle on batch adsorption process. The effectiveness of the microwavecombustion route in producing cubic ZnO with fluorite structure was checked by the X-raypowderdiffraction pattern and surface morphology of ZnO was investigated by Field Em...

A sample of pure CeO2 and two samples of Fe-doped CeO2 containing either 3 or 6 at.% Fe were obtained by microwave assisted combustion synthesis. The powders were extensively characterized by several techniques and tested as catalysts for both CO oxidation and soot combustion. As-synthesized CeO2 nanoparticles have a mostly squared shape and size w...

Background: At present scenario, there is the global issue due to the environment pollution caused by waste effluent bearing organic dyes such as Methyl Violet (MV) while getting mixed into the surface water. Such organic dye uses in industries like textile, paper, leather, food, pharmaceutical, cosmetics etc. is extensive leading to increase the c...

This article shows the magnetic phase diagram for Zr1-xNixO2 compositions synthesized by microwave combustion method. The samples show room temperature ferromagnetism over the entire range of Ni- doping. Ni²⁺/ZrO2 (<4 at% Ni) indicates a safe substitution limit to show dilute magnetic phase. There is a threshold limit to this Dilute Magnetic Semico...

Zirconium oxide (zirconia) exists in three crystalline forms of monoclinic, tetragonal and cubic structures at atmospheric pressures. The cubic form of zirconia is well known for its mechanical, electrochemical and optical applications. Fe-doped cubic zirconia (high temperature phase) compositions are synthesized by microwave combustion method. Her...

Zirconium dioxide (zirconia) has three allotropes: mono‐clinic, tetragonal and cubic. The disruptive phase transformation between the first two can be suppressed by total stabilization in the cubic form. Using microwave route, high‐temperature cubic phase of ZrO2 is synthesized without any stabilizing dopant. Here, we report on the structural and m...