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Item Synthesis And Characterization Of Novel Zn Modified Ceo2@Biochar Nanocomposite And Its Application In Fenton-Activated Photocatalytic Degradation Of Methylene Blue Dye(Department of Chemistry, NITS, 2022) Dey, Akshay KumarHerein, a novel nanocomposite, namely, Zn modified CeO2@biochar (Zn/CeO2@BC) is synthesized via facile one-step sol-precipitation to study its photocatalytic activity towards the removal of Methylene Blue dye. Firstly, Zn/Ce(OH)4@biochar was precipitated by the addition of sodium hydroxide to cerium salt precursor, then the composite was calcined in muffle furnace to convert Ce(OH)4 into CeO2. The crystallite structure, topographical and morphological properties, chemical compositions and specific surface area of the synthesized nanocomposite are characterized by XRD, SEM, TEM, XPS, and BET analysis. The nearly spherical Zn/CeO2@biochar nanocomposite has an average particle size of 27.05 nm and a specific surface area of 141.59 m2/g. All the tests showed the agglomeration of Zn nanoparticles over CeO2@biochar matrix. The synthesized nanocomposite showed a remarkable photocatalytic activity towards the removal of Methylene Blue, an organic dye commonly found in industrial effluents. The kinetics and mechanism of Fenton-activated dye degradation were studied. The nanocomposite exhibited a highest degradation efficiency of 98.24% under direct solar-irradiation of 90 minutes, at an optimum dosage of 0.2 g L-1 catalyst and 10 ppm dye concentration, in presence of 25% (V/V) 1 mL hydrogen peroxide. The degradation process followed a pseudo-first-order kinetics having rate constant (k) value of 0.04331 min-1.Item Fabrication, Characterization And Application Of Novel CS-In2s3 Nanocomposite In Adsorptive Removal Of Victoria Blue From Aqeous Solution(Department of Chemistry, NITS, 2022) Roy, PreronaA novel chitosan-indium sulphide (CS-In2S3) nanocomposite was synthesized by the method of co-precipitation. It was used in removing Victoria Blue (VB) dye from its aqueous solution. Firstly, chitosan and InCl3 were combined in solution phase followed by co-precipitation by the use of Na2S lead to the fabrication of the novel nanocomposite. The structure, surface morphology, constitution, and surface area of the synthesized composite were characterized by transmission electron microscopy (TEM), X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Brunauer-Emmett-Teller (BET) analysis. The nearly spherical particles showed a large pore diameter of 170.384 Å. All the characterizations showed the agglomeration of In2S3 on the chitosan matrix. The fabricated nano-catalyst showed remarkable adsorption performance towards VB. The adsorption isotherms and kinetics of the sorption process were studied. The optimum catalyst dosage and dye concentration are obtained as 0.24 g/L and 100 mg/L. The BET isotherm, adsorption and kinetics studies shows that the nano-catalyst performs adsorptive removal of VB from its aqueous solution via monolayer chemisorption. The adsorption process was found to follow the pseudo-second order kinetics and was better fitted by the Langmuir adsorption isotherm than the Freundlich adsorption isotherm. The maximum adsorption capacity reached was 337.83 mg/g, and the pseudo-second order rate constant was determined to be 4.046*10-3 g.mg-1.min-1.Item Synthesis and application of Schiff base ligand metal complex and metal oxide nanoparticles in dye degradation under Sunlight(Department of Chemistry, NITS, 2022) Dey, SoumyadipNovel Schiff Base is synthesized from aldehyde and an amine under conventional method. The prepared Schiff base has been characterized using UV-Vis, FT-IR. Co(II) and Ni(II) metal complexes of synthesized Schiff base have been prepared successfully by refluxing the Schiff base with Co(NO3)2.6H2O and Ni(CH3COO)2.4H2O respectively. These prepared Co(II) and Ni(II) metal complexes are used for the synthesis of Co3O4 and NiO nanoparticles, respectively. The synthesized nanoparticles have been characterised by XRD, SEM-EDS, FT IR and UV-Vis spectroscopy. These nanoparticles exhibit excellent photo-catalytic activity for the degradation of methylene blue dye under the sunlight. Out of these NiO nanoparticle shows maximum photocatalytic activity.Item Spectroscopic and Computational Approach To Study Interaction Of Selumetinib With Bovine Serum Albumin(Department of Chemistry, NITS, 2022) Kalita, TrilochanItem Studying Interaction Of Alpelisib With Bovine Serum Albumin(Department of Chemistry, NITS, 2022) Das, Samar JyotiItem Ni/Mg@Biochar Synthesis And Characterization For The Efficient Reduction Of Pnp(Department of Chemistry, NITS, 2022) Majhi, SarmisthaHerein, modified Ni/Mg@biochar novel nanaocomposit is synthesised via co-precipitation method and its activity towards the reduction of para-nitrophenol (PNP) has been studied . At first, bamboo biochar was treated with a base. It was further washed and impregnated with the solution of Nickel (II) chloride [NiCl2.6H2O] of 0.6 M and Magnesium sulphate heptahydrate [MgSO4.7H2O] of 0.4 M to obtain novel Ni/Mg@biochar. The structure, composition, surface morphology and reduction analysis were characterised by XRD, EDX, SEM, TEM and UV VIS spectrometer . All the above mentioned characterisation showed the agglomeration of Ni salt and Mg salt over biochar. The catalytic activity of synthesised Ni/Mg@biochar nano composit was studied for the reduction of para-nitrophenol. ). The reduction efficiency of the synthesized nanocomposite showed ~100 % reduction within 28 minutes.Item Transition metal complexes of 4-N,N -dimethylaminophenyl substituted 2,6-dipyrazinylpyridine ligand for anion sensing(Department of Chemistry, NITS, 2022) Mondal, SomnathIn this project work, we have synthesized the ligand 4-N,N-dimethylaminophenyl substituted 2,6-dipyrazinylpyridine L. The synthesized ligand on reacting separately with ZnCl2 and CuCl2 resulted in the formation of desired chemosensors ZnCl2L and CuCl2L respectively. This chemosensor ZnCl2L is used to recognize and sense biologically significant pyrophosphate anion (PPi) in the presence of other anions in aqueous acetonitrile (1:1 v/v) solution (buffered with 10 mM HEPES). The sensing study was visualized through colorimetric method also. Zn-L characteristic absorption band of the ZnCl2L receptor which is unaffected in the presence of other anions got suppressed significantly only upon the addition of PPi ion which confirms high selectivity of the synthesized chemosensor ZnCl2L towards PPi. The CuCl2L receptor is used to recognize and sense hazardous and toxin sulphide anion (S2-) in the presence of other anions in aqueous acetonitrile (2:1 v/v) solution (buffered with 10 mM HEPES). The sensing study was visualized through colorimetric method also. Cu-L characteristic absorption band of the CuCl2L receptor which is unaffected in the presence of other anions, but disappeared and simultaneously the absorption bands of the L re-appeared only upon the addition of one equivalent of S2- anion which confirms high selectivity of the synthesized chemosensor CuCl2L towards S2- anion.