Three kinds of new layered perovskite compounds with Ruddlesden-Popper （R-P） phase, AgrNa2-xLa2Ti3O10 （x = 0.2, 0.3 and 0.5）, were synthesized by an ion-exchange reaction of Na2La2Ti3O10 with AgNO3 solution. The s...Three kinds of new layered perovskite compounds with Ruddlesden-Popper （R-P） phase, AgrNa2-xLa2Ti3O10 （x = 0.2, 0.3 and 0.5）, were synthesized by an ion-exchange reaction of Na2La2Ti3O10 with AgNO3 solution. The structures of the compounds were characterized by EDX and XRD, and their antibacterial activity and light-resistance property were evaluated. The results indicated that the molecular formula of AgxNa2-xLa2Ti3O10 （x = 0.2, 0.3 and 0.5） was confirmed, and that the crystalline structure of Na2La2Ti3O10 was not obviously affected by exchange of silver ion. The minimum inhibitory concentrations （MICs） of Ag0.3Na1.7La2Ti3O10 against Escherichia coli （E. coli）, Staphylococcus aureus （S. aureus） were 180 μg/mL and 240 μg/mL, respectively, while its discoloration was not observed after 24 h light ageing test.展开更多
The phosphors BaAl2O4: Eu2+. RE (RE=Dy. Ho) have been prepared by the microwave heating technique. The long-lasting phosphorescence in the phosphors of the barium aluminate activated with europium and other rare ear...The phosphors BaAl2O4: Eu2+. RE (RE=Dy. Ho) have been prepared by the microwave heating technique. The long-lasting phosphorescence in the phosphors of the barium aluminate activated with europium and other rare earths has been observed for the first time.展开更多
In the system Na1.67-2xBaxMgo.67Al10.33O17Eu2 + with x equal to 0.50,emission wavelength of Eu2+ is 455um and relative brightness surpasses common blue phosphor BaMgAl10O17 Eu2+, and effective concentra -tion of Eu2+ ...In the system Na1.67-2xBaxMgo.67Al10.33O17Eu2 + with x equal to 0.50,emission wavelength of Eu2+ is 455um and relative brightness surpasses common blue phosphor BaMgAl10O17 Eu2+, and effective concentra -tion of Eu2+ in the new phosphor is less than that of BaMgAl10O17:Eu2+.It is possible to becone a new phosphor at trichrometric fluorescent powder of rare earthe through further study.展开更多
文摘Three kinds of new layered perovskite compounds with Ruddlesden-Popper （R-P） phase, AgrNa2-xLa2Ti3O10 （x = 0.2, 0.3 and 0.5）, were synthesized by an ion-exchange reaction of Na2La2Ti3O10 with AgNO3 solution. The structures of the compounds were characterized by EDX and XRD, and their antibacterial activity and light-resistance property were evaluated. The results indicated that the molecular formula of AgxNa2-xLa2Ti3O10 （x = 0.2, 0.3 and 0.5） was confirmed, and that the crystalline structure of Na2La2Ti3O10 was not obviously affected by exchange of silver ion. The minimum inhibitory concentrations （MICs） of Ag0.3Na1.7La2Ti3O10 against Escherichia coli （E. coli）, Staphylococcus aureus （S. aureus） were 180 μg/mL and 240 μg/mL, respectively, while its discoloration was not observed after 24 h light ageing test.
文摘The phosphors BaAl2O4: Eu2+. RE (RE=Dy. Ho) have been prepared by the microwave heating technique. The long-lasting phosphorescence in the phosphors of the barium aluminate activated with europium and other rare earths has been observed for the first time.
文摘In the system Na1.67-2xBaxMgo.67Al10.33O17Eu2 + with x equal to 0.50,emission wavelength of Eu2+ is 455um and relative brightness surpasses common blue phosphor BaMgAl10O17 Eu2+, and effective concentra -tion of Eu2+ in the new phosphor is less than that of BaMgAl10O17:Eu2+.It is possible to becone a new phosphor at trichrometric fluorescent powder of rare earthe through further study.
