The mesoporous photocatalyst InVO4 was synthesized by the template-directing self-assembling method.The synthesized InVO4 was characterized by means of X-ray diffraction,transmission electron microscopy,N2 adsorption,...The mesoporous photocatalyst InVO4 was synthesized by the template-directing self-assembling method.The synthesized InVO4 was characterized by means of X-ray diffraction,transmission electron microscopy,N2 adsorption,and ultraviolet-visible spectroscopy.The results showed that the crystal structure of InVO4 could be controlled by changing the calcination temperature.Compared with the anatase TiO2 and conventional InVO4,the mesoporous InVO4 was more responsive toward visible light.The evolution rate of H2 from water over the mesoporous InVO4 achieved（1?836） μmol/（g·h） under UV light irradiation, which was much higher than the anatase TiO2 and conventional InVO4.展开更多
A series of vortex tube nozzles were designed and fabricated,and the effect of various cross sections of nozzle and the number of the nozzle intakes on the energy separation performance of a vortex tube were investiga...A series of vortex tube nozzles were designed and fabricated,and the effect of various cross sections of nozzle and the number of the nozzle intakes on the energy separation performance of a vortex tube were investigated experimentally by using air as test fluid. The experimental results showed that the vortex tube with the nozzle cross section designed in this study was superior to that with the nozzles of normal rectangle cross section and that of Archimedes’ spiral type in terms of regeneration temperature performance under the condition of ambient temperature with inlet pressure of 0.4 MPa.The cooling performance of the vortex tube with four intakes nozzle was the best while that of the vortex tube with eight intakes nozzle was the worst under the same experimental condition.展开更多
文摘The mesoporous photocatalyst InVO4 was synthesized by the template-directing self-assembling method.The synthesized InVO4 was characterized by means of X-ray diffraction,transmission electron microscopy,N2 adsorption,and ultraviolet-visible spectroscopy.The results showed that the crystal structure of InVO4 could be controlled by changing the calcination temperature.Compared with the anatase TiO2 and conventional InVO4,the mesoporous InVO4 was more responsive toward visible light.The evolution rate of H2 from water over the mesoporous InVO4 achieved（1?836） μmol/（g·h） under UV light irradiation, which was much higher than the anatase TiO2 and conventional InVO4.
文摘A series of vortex tube nozzles were designed and fabricated,and the effect of various cross sections of nozzle and the number of the nozzle intakes on the energy separation performance of a vortex tube were investigated experimentally by using air as test fluid. The experimental results showed that the vortex tube with the nozzle cross section designed in this study was superior to that with the nozzles of normal rectangle cross section and that of Archimedes’ spiral type in terms of regeneration temperature performance under the condition of ambient temperature with inlet pressure of 0.4 MPa.The cooling performance of the vortex tube with four intakes nozzle was the best while that of the vortex tube with eight intakes nozzle was the worst under the same experimental condition.
