In this work,15 types of rare earth(Re)ions,including Y^(3+),La^(3+),Ce^(3+),Pr^(3+),Nd^(3+),Sm^(3+),Eu^(3+),Gd^(3+),Tb^(3+),Dy^(3+),Ho^(3+),Er^(3+),Tm^(3+),Yb^(3+)and Lu^(3+)doped perovskite SrTiO_(3)powders were syn...In this work,15 types of rare earth(Re)ions,including Y^(3+),La^(3+),Ce^(3+),Pr^(3+),Nd^(3+),Sm^(3+),Eu^(3+),Gd^(3+),Tb^(3+),Dy^(3+),Ho^(3+),Er^(3+),Tm^(3+),Yb^(3+)and Lu^(3+)doped perovskite SrTiO_(3)powders were synthesized by solgel method.The influence of Re ions doping on the crystal structure,morphology and optical property as well as the photocatalytic activity for the photodegradation of rhodamine B(RhB)was investigated in detail when the synthesized Re ions doped SrTiO_(3)powders were served as catalysts.The presented results revealed that the crystal structure is invariable,whereas the morphology and the optical bandgap are variable for the resultant SrTiO_(3)powders when different Re ions were incorporated into the SrTiO_(3)lattice.The relatedness between the morphology,optical property and photocatalytic activity of the synthesized SrTiO_(3)catalysts doped with variable Re ions were analyzed deeply,providing an insight into the influence factors on the photocatalytic activity of catalysts.展开更多
Yellow-emitting BCNO phosphors,applied for white light-emitting-diodes（LEDs）,were synthesized by a facile microwave heating route at lower temperature within short duration.The prepared BCNO phosphors exhibited amor...Yellow-emitting BCNO phosphors,applied for white light-emitting-diodes（LEDs）,were synthesized by a facile microwave heating route at lower temperature within short duration.The prepared BCNO phosphors exhibited amorphous form and tunable yellow emission in the range of 510–550 nm under the excitation of 450-nm blue light.The effects of carbon content on the photoluminescence properties for these BCNO phosphors and their application performances in white LEDs were investigated in detail.The demonstrated microwave synthesis route is promising in preparing low-cost phosphors,and the prepared BCNO phosphor may find potential application in blue-based white LEDs.展开更多
基金financially supported by the National Natural Science Foundation of China(No.51777138)the Natural Science Foundation of Tianjin City(Nos.18JCZDJC99700,18JCYBJC87400 and 18JCQNJC73900)the Scientific Developing Foundation of Tianjin Education Commission(No.2018KJ130)。
文摘In this work,15 types of rare earth(Re)ions,including Y^(3+),La^(3+),Ce^(3+),Pr^(3+),Nd^(3+),Sm^(3+),Eu^(3+),Gd^(3+),Tb^(3+),Dy^(3+),Ho^(3+),Er^(3+),Tm^(3+),Yb^(3+)and Lu^(3+)doped perovskite SrTiO_(3)powders were synthesized by solgel method.The influence of Re ions doping on the crystal structure,morphology and optical property as well as the photocatalytic activity for the photodegradation of rhodamine B(RhB)was investigated in detail when the synthesized Re ions doped SrTiO_(3)powders were served as catalysts.The presented results revealed that the crystal structure is invariable,whereas the morphology and the optical bandgap are variable for the resultant SrTiO_(3)powders when different Re ions were incorporated into the SrTiO_(3)lattice.The relatedness between the morphology,optical property and photocatalytic activity of the synthesized SrTiO_(3)catalysts doped with variable Re ions were analyzed deeply,providing an insight into the influence factors on the photocatalytic activity of catalysts.
基金the financial support by the National Natural Science Foundation of China(Nos.50872091and 51102265)Program of Discipline Leader of Colleges and Universities(Tianjin,China)‘‘Foreign Experts’’Thousand Talents Program(Tianjin,China)
文摘Yellow-emitting BCNO phosphors,applied for white light-emitting-diodes（LEDs）,were synthesized by a facile microwave heating route at lower temperature within short duration.The prepared BCNO phosphors exhibited amorphous form and tunable yellow emission in the range of 510–550 nm under the excitation of 450-nm blue light.The effects of carbon content on the photoluminescence properties for these BCNO phosphors and their application performances in white LEDs were investigated in detail.The demonstrated microwave synthesis route is promising in preparing low-cost phosphors,and the prepared BCNO phosphor may find potential application in blue-based white LEDs.
