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Porous Mn-doped LiFePO 4 /C cathode material was synthesized by facile and fast microwave assisted solid state reaction from iron carbonyl complex using citric acid as reducing agent and source of carbon. The microstructure and electrochemical performance were systematically investigated by X-ray diffraction (XRD), scanning electron microscope (SEM), field emission scanning electron microscope (FE-SEM), transmission electron microscope (TEM), Raman spectroscopy, charge-discharge cycling, cyclic voltammogram and electrochemical impedance spectroscopy. It was found that the as-prepared composites have a single phase of orthorhombic olivinetype structure and Mn 2+ has successfully introduced into the M 2 (Fe) sites. The electrochemical properties of LiFe 0.99 Mn 0.01 PO 4 /C were compared with bare LiFePO 4 and LiFePO 4 /C composite prepared by identical route. Compare to as-prepared LiFePO 4 /C composites, LiFe 0.99 Mn 0.01 PO 4 /C demonstrates a remarkable electrochemical property in terms of discharge capacity, electrochemical reversibility and cycling performance with an initial discharge capacity of 163.2 mAh•g-1 at a discharge rate of 0.1 C. It also performed excellent even at higher current densities. The improved electrochemical performance was attributed to the smaller particle size, 1

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Template-free processing of Ag-anchored ZnO polyscale sheets was successfully synthesized using the onepot hydrothermal technique. The characterization of the synthesized samples was done using powder X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, UV-vis spectroscopy, and X-ray photoelectron spectroscopy. The photocatalytic degradation of organics present in pharmaceutical waste on exposure to sunlight and UV light confirms the photocatalytic degradation efficiency of the synthesized samples. The effectiveness of the degradation was measured based on the chemical oxygen demand and percent decomposition of the organics present in the pharmaceutical waste. Our studies revealed that the photodegradation efficiency of the samples varies with added amounts of Ag content. The maximum photocatalytic degradation efficiency was obtained using 2% Ag-deposited ZnO polyscale sheets (2AZ), where the rates of decomposition were 77.8% under sunlight and 76% under UV light.

TiO hollow spheres and TiO hollow spheres adorned with SnO quantum dots were synthesized successfully under mild temperature and autogenous pressure using the hydrothermal route. X-ray diffraction, field emission scanning electron microscopy, scanning electron microscopy, transmission electron microscope, photoluminescence spectroscopy, and UV-vis spectroscopy were used to characterize the physical and chemical nature of the synthesized sample. The characterized samples were used in the photocatalytic applications to reduce the concentration of carbon dioxide in the presence of water under the influence of visible light. Our observation confirmed that with increasing SnO content there is a tremendous change in the photocatalytic performance of the samples, due to free mobility of the electrons and holes and decline in charge recombination centers formed with the formation of nano-heterojunction between SnO and TiO. The greater photocatalytic production of methanol was achieved using 2ST sample, i.e., 1.61 μmol/g/h which tends to decrease with an increase in SnO content.

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SummaryAttempts were made to introduce four major fission products, namely, Cs, Sr, Ru and Te into thermodynamically stable NaZr