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| 1 | Metathesis synthesis, characterization, spectral and photoactivity studies of Ln_(2/3)MoO_4(Ln=La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Er and Y)显示文摘Rare earth ortho-oxomolybdates of composition Ln2/3MoO 4(Ln=La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Er and Y) were prepared by metathesis reaction. All these materials were characterized by powder X-ray diffraction, Fourier transform-infrared spectroscopy(FT-IR) and UV-Vis diffuse reflectance spectra. The Rietveld analysis of all the samples was carried out to obtain the unit cell parameters and reliability factors. All the materials were crystallized in tetragonal lattice with I41/a space group. The infrared spectra of all the samples were characterized by bands due to MoO 2–4 units. The bandgap energies of all the samples were obtained from UV-Vis DRS spectra. The luminescence spectra of Ln2/3MoO 4(Ln=Pr, Eu and Dy) showed characteristic transitions of the rare earth ions. The visible light photocatalytic activity of all the samples was studied against degradation of methylene blue. | Radha Velchuri Suresh Palla G.Ravi Naveen Kumar Veldurthi J.R.Reddy M.Vithal | 2015 | Journal of Rare Earths2015，33，8： | 5 |
| 2 | Degradation of Methylene Blue and Rhodamine B Using a New Visible Light-Responsive Photocatalyst, KSb_2PO_(8-x)N_y显示文摘Potassium phosphatoantimonates, KSb_2PO_8(KSbPO) and KSb_2PO_(8-x)N_y(KSbPON), are prepared by solidstate method. Urea is employed as a source of nitrogen for N-doping. Structural, morphological and optical properties of both KSbPO and KSb PON are characterized by powder X-ray diffraction(PXRD), scanning electron microscopy, energydispersive spectroscopy, Fourier transform infrared spectroscopy and UV–visible diffuse reflectance spectroscopy. Both samples are found to crystallize in a monoclinic lattice with Cc space group. The d-lines of KSb PO and KSbPON are refined by least square fitting the PXRD data, using POWD software to obtain their unit cell parameters. The bandgap energy(Eg) of both pristine and N-doped KSbPO is found from their Kubelka–Munk plot. The KSb PON/visible photocatalytic degradation of methylene blue and rhodamine B has been investigated in aqueous heterogeneous suspension. The generation of OH in the presence of KSb PON during the photoreaction is verified by a fluorescence technique using terephthalic acid(TA) as a probe. | G.Ravi CH.Sudhakar Reddy K.Sreenu Ravinder Guje Radha Velchuri M.Vithal | 2016 | Acta Metallurgica Sinica(English Letters)2016，29，4： | 0 |
| 3 | Enhanced Photocatalytic Activity of N-doped Li_2VPO_6 Under Visible Light Irradiation显示文摘Substitutional doping of framework heteroatoms in photocatalysts is one of the approaches for harvesting visible light. The present work aims to utilize the visible light for photocatalytic degradation of organic pollutant by tailoring the bandgap energy of Li2VPO6 through nitrogen doping. Li2VPO6 and N-doped Li2VPO6 are prepared by solidstate method. These materials were characterized by powder X-ray diffraction, energy-dispersive spectra, Raman spectra,UV–Vis diffuse reflectance spectra(UV–Vis DRS), and31 P MAS NMR. The absorption edge of N-doped Li2VPO6 is shifted to longer wavelength region considerably. The photocatalytic activity was tested against the degradation of methylene blue. The higher visible light photocatalytic activity of N-doped Li2VPO6 compared to pristine Li2VPO6 was discussed. The catalysts are stable even after fourth cycle of photodegradation. | Suresh Palla Ravinder Guje G.Ravi Radha Velchuri M.Vithal | 2015 | Acta Metallurgica Sinica(English Letters)2015，28，2： | 0 |
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