[Ru (bpy)_3]^(2+)/MCM-41 composite material obtained by loading tris(2, 2' - bipyridine)ruthenium(Ⅱ) ([Ru (bpy)_3]^(2+) ) in siliceous mesoporous MCM-41 was characterized by X-ray powder diffraction, UV-Vis absor...[Ru (bpy)_3]^(2+)/MCM-41 composite material obtained by loading tris(2, 2' - bipyridine)ruthenium(Ⅱ) ([Ru (bpy)_3]^(2+) ) in siliceous mesoporous MCM-41 was characterized by X-ray powder diffraction, UV-Vis absorption and emission spectroscopies. The absorption spectrum of [Ru(bpy)_3]^(2+) /MCM-41 is similar to that of [Ru (bpy)_3]^(2+) aqueous solution, whereas its emission spectrum exhibits hypsochromic shift compared to the solution spectrum. On the other hand, the peak position of the emission spectrum of [Ru(bpy)_3]^(2+)/MCM-41 shifts towards longer wavelength when the loading amount increases.展开更多
In this paper,the nanometer TiO2-SiO2 composite oxide,which has a higher surface area,was prepared by sol-gel.The surface area and structural property of composite oxide were examined.The results indicated that nanome...In this paper,the nanometer TiO2-SiO2 composite oxide,which has a higher surface area,was prepared by sol-gel.The surface area and structural property of composite oxide were examined.The results indicated that nanometer particles of the composite oxide were obtained.When nSi∶nTi ratio was equal to 4.6,the surface area was larger comparing with pure TiO2 and pure SiO2.Tris（2,2’-bipyridine） ruthenium（Ⅱ） absorbed on TiO2-SiO2 composite oxide was sensitive to oxygen.展开更多
基金the National Natural Science Foundation of China!(No. 29771013 and No. 29725101 )
文摘[Ru (bpy)_3]^(2+)/MCM-41 composite material obtained by loading tris(2, 2' - bipyridine)ruthenium(Ⅱ) ([Ru (bpy)_3]^(2+) ) in siliceous mesoporous MCM-41 was characterized by X-ray powder diffraction, UV-Vis absorption and emission spectroscopies. The absorption spectrum of [Ru(bpy)_3]^(2+) /MCM-41 is similar to that of [Ru (bpy)_3]^(2+) aqueous solution, whereas its emission spectrum exhibits hypsochromic shift compared to the solution spectrum. On the other hand, the peak position of the emission spectrum of [Ru(bpy)_3]^(2+)/MCM-41 shifts towards longer wavelength when the loading amount increases.
文摘In this paper,the nanometer TiO2-SiO2 composite oxide,which has a higher surface area,was prepared by sol-gel.The surface area and structural property of composite oxide were examined.The results indicated that nanometer particles of the composite oxide were obtained.When nSi∶nTi ratio was equal to 4.6,the surface area was larger comparing with pure TiO2 and pure SiO2.Tris（2,2’-bipyridine） ruthenium（Ⅱ） absorbed on TiO2-SiO2 composite oxide was sensitive to oxygen.
