The physico-chemical properties of cesium doped SnO2 nanocrystals synthesized by wet chemical method have been investigated. Scanning electron microscopy （SEM）, X-ray diffraction （XRD）, energy dispersive X-ray ana...The physico-chemical properties of cesium doped SnO2 nanocrystals synthesized by wet chemical method have been investigated. Scanning electron microscopy （SEM）, X-ray diffraction （XRD）, energy dispersive X-ray analysis （EDAX）, inductively coupled plasma （ICP）, atomic absorption spectroscopic （AAS） analyses, UV-vis-NIR spectral studies and dielectric studies were carried out for both pure SnO2 and cesium doped SnO2 nano-samples. All samples of SnO2 did not show any metallic cluster, but the sample containing cesium as a dopant displayed significant activity. The products formed were chloride and water representing a competitive advantage from the stand point of environmental protection.展开更多
Single crystals of β-Naphthol （/3N）, an organic nonlinear optical （NLO） material was successfully grown by temperature lowering method using chloroform as solvent. The initial compound was purified by repeated re...Single crystals of β-Naphthol （/3N）, an organic nonlinear optical （NLO） material was successfully grown by temperature lowering method using chloroform as solvent. The initial compound was purified by repeated recrystallization process. As-grown crystals were characterized by single crystal X-ray diffraction （XRD） studies to ascertain that βN crystal crystallized in the monoclinic system with a noncemtrosymmetric space group. Vibrational frequencies of various functional groups in the crystals were derived from Fourier transform infrared （FTIR） spectroscopy and proton nuclear magnetic resonance （NMR） spectrum. Optical characterization was done using UV-Visible near-infrared （NIR） spectroscopy. The thermal behaviour of the material was studied by thermo gravimetric and differential thermal plots. Scanning electron microscopy （SEM） study was carried out on the surface of the grown crystals to investigate the nature of defects in the crystal surface and the NLO property of the crystal was tested by Nd：YAG laser as a source.展开更多
文摘The physico-chemical properties of cesium doped SnO2 nanocrystals synthesized by wet chemical method have been investigated. Scanning electron microscopy （SEM）, X-ray diffraction （XRD）, energy dispersive X-ray analysis （EDAX）, inductively coupled plasma （ICP）, atomic absorption spectroscopic （AAS） analyses, UV-vis-NIR spectral studies and dielectric studies were carried out for both pure SnO2 and cesium doped SnO2 nano-samples. All samples of SnO2 did not show any metallic cluster, but the sample containing cesium as a dopant displayed significant activity. The products formed were chloride and water representing a competitive advantage from the stand point of environmental protection.
文摘Single crystals of β-Naphthol （/3N）, an organic nonlinear optical （NLO） material was successfully grown by temperature lowering method using chloroform as solvent. The initial compound was purified by repeated recrystallization process. As-grown crystals were characterized by single crystal X-ray diffraction （XRD） studies to ascertain that βN crystal crystallized in the monoclinic system with a noncemtrosymmetric space group. Vibrational frequencies of various functional groups in the crystals were derived from Fourier transform infrared （FTIR） spectroscopy and proton nuclear magnetic resonance （NMR） spectrum. Optical characterization was done using UV-Visible near-infrared （NIR） spectroscopy. The thermal behaviour of the material was studied by thermo gravimetric and differential thermal plots. Scanning electron microscopy （SEM） study was carried out on the surface of the grown crystals to investigate the nature of defects in the crystal surface and the NLO property of the crystal was tested by Nd：YAG laser as a source.
