Adsorption and photodegradation are promising approaches for removing organic pollutions.In this study,we combined these two processes by co-loading Fe-TiO2 and Fe2O3 quantum dots(QDs)on porous MCM-41,using a simple h...Adsorption and photodegradation are promising approaches for removing organic pollutions.In this study,we combined these two processes by co-loading Fe-TiO2 and Fe2O3 quantum dots(QDs)on porous MCM-41,using a simple hydrolysis method.X-ray diffraction,high-resolution transmission electron microscopy,and X-ray photoelectron spectroscopy results indicated that Fe-TiO2 QDs are formed at low Fe precursor concentrations,while additional Fe2O3 QDs are formed at higher Fe precursor concentrations.The Fe2O3 and Fe-TiO2 QDs impart high adsorption capacity and high photoactivity to the porous MCM-41,respectively.Thus,their combination results in a synergic effect of the adsorption and photodegradation.The highest-performing sample exhibits excellent performance in removing rose bengal from aqueous solution.展开更多
A comprehensive first principles study of III-Antimonide binary compounds is hardly found in literature. We report a broad study of structural and electronic properties of boron antimonide （BSb）, aluminium antimoni...A comprehensive first principles study of III-Antimonide binary compounds is hardly found in literature. We report a broad study of structural and electronic properties of boron antimonide （BSb）, aluminium antimonide （AlSb）, gallium antimonide （GaSb） and indium antimonide （InSb） in zineblende phase based on density functional theory （DFT）. Our calculations are based on Full-PotentiM Lineaxized Augmented Plane wave plus local orbitals （FP- L（APWq-lo）） method. Different forms of exchange-correlation energy functional and corresponding potential are employed for structural and electronic properties. Our computed results for lattice parameters, bulk moduli, their pressure derivatives, and cohesive energy are consistent with the available experimental data. Boron antimonide is found to be the hardest compound of this group. For band structure calculations, in addition to LDA and GGA, we used GGA-EV, an approximation employed by Engel and Vosko. The band gap results with GGA-EV are of significant improvement over the earlier work.展开更多
Free falling hypersurfaces in the Schwarzschild geometry have been studied to provide a complete foliation of spacetime. The hypersurfaces do not cross into the maximally extended spacetime and are well behaved everyw...Free falling hypersurfaces in the Schwarzschild geometry have been studied to provide a complete foliation of spacetime. The hypersurfaces do not cross into the maximally extended spacetime and are well behaved everywhere except at the singularity r =0 the mean extrinsic curvature becomes infinity.展开更多
Very receat measurements of π+p and K+p elastic seattering at 250GeV/c have been explained by using the generalised Chou-Yang model.Dips are predicted to occur at-t=3.63 and 4.36(GeV/c)^(2) respectively。
Most recent data for the differential cross section and polarisation for the hypercharge exchange reaction π+p → K+Σ+ and its line-reversed partners is explained by using the simple Regge pole model with phenomenol...Most recent data for the differential cross section and polarisation for the hypercharge exchange reaction π+p → K+Σ+ and its line-reversed partners is explained by using the simple Regge pole model with phenomenological residue functions.展开更多
The differential cross section data for high energy K-p elastic scattering showing a break near-t=4(Gev/c)^(2) have been fitted for pL=20,100 and 200GeV/c with-t extended up to 14(Gev/c)^(2) by using a dipole pomeron ...The differential cross section data for high energy K-p elastic scattering showing a break near-t=4(Gev/c)^(2) have been fitted for pL=20,100 and 200GeV/c with-t extended up to 14(Gev/c)^(2) by using a dipole pomeron mode.展开更多
文摘Adsorption and photodegradation are promising approaches for removing organic pollutions.In this study,we combined these two processes by co-loading Fe-TiO2 and Fe2O3 quantum dots(QDs)on porous MCM-41,using a simple hydrolysis method.X-ray diffraction,high-resolution transmission electron microscopy,and X-ray photoelectron spectroscopy results indicated that Fe-TiO2 QDs are formed at low Fe precursor concentrations,while additional Fe2O3 QDs are formed at higher Fe precursor concentrations.The Fe2O3 and Fe-TiO2 QDs impart high adsorption capacity and high photoactivity to the porous MCM-41,respectively.Thus,their combination results in a synergic effect of the adsorption and photodegradation.The highest-performing sample exhibits excellent performance in removing rose bengal from aqueous solution.
文摘A comprehensive first principles study of III-Antimonide binary compounds is hardly found in literature. We report a broad study of structural and electronic properties of boron antimonide （BSb）, aluminium antimonide （AlSb）, gallium antimonide （GaSb） and indium antimonide （InSb） in zineblende phase based on density functional theory （DFT）. Our calculations are based on Full-PotentiM Lineaxized Augmented Plane wave plus local orbitals （FP- L（APWq-lo）） method. Different forms of exchange-correlation energy functional and corresponding potential are employed for structural and electronic properties. Our computed results for lattice parameters, bulk moduli, their pressure derivatives, and cohesive energy are consistent with the available experimental data. Boron antimonide is found to be the hardest compound of this group. For band structure calculations, in addition to LDA and GGA, we used GGA-EV, an approximation employed by Engel and Vosko. The band gap results with GGA-EV are of significant improvement over the earlier work.
文摘Free falling hypersurfaces in the Schwarzschild geometry have been studied to provide a complete foliation of spacetime. The hypersurfaces do not cross into the maximally extended spacetime and are well behaved everywhere except at the singularity r =0 the mean extrinsic curvature becomes infinity.
文摘Very receat measurements of π+p and K+p elastic seattering at 250GeV/c have been explained by using the generalised Chou-Yang model.Dips are predicted to occur at-t=3.63 and 4.36(GeV/c)^(2) respectively。
文摘Most recent data for the differential cross section and polarisation for the hypercharge exchange reaction π+p → K+Σ+ and its line-reversed partners is explained by using the simple Regge pole model with phenomenological residue functions.
文摘The differential cross section data for high energy K-p elastic scattering showing a break near-t=4(Gev/c)^(2) have been fitted for pL=20,100 and 200GeV/c with-t extended up to 14(Gev/c)^(2) by using a dipole pomeron mode.
