Enhanced photocatalytic performance of SrTiO₃ powder induced by europium dopants

Yingqi Wang¹，Wenqi Ma¹，Yuexin Song¹，Jingjing Chen¹，Jiao Xu²，Dajian Wan²，Zhiyong Mao²

1. Tianjin Key Laboratory for Photoelectric Materials and Devices,School of Materials Science and Engineering,Tianjin University of Technology2. Key Laboratory of Display Materials and Photoelectric Devices,Ministry of Education,Tianjin University of Technology

摘 要：In this work,Eu³⁺doped SrTiO₃ powders were synthesized by sol-gel method and the influences of Eu³⁺dopants on the crystalline structure,micro structure mo rphology,electronic band-gap and photocatalytic performance for degradation of o rganic pollutant were investigated in detail.Research results reveal that the incorporated Eu3+ions in SrTiO₃ lattice are preferable to substitute the Sr²⁺-Ti4+ions pair by two Eu3+ions.The presence of Eu3+ions plays a significant role for the microstructure morphology of the S rTiO₃ powders,leading to the formation of smaller size nanoparticles with a higher specific surface area.The light absorption capability of the resulting materials is improved owing to the narrowing of the band-gap induced by Eu3+dopants.As a result,the enhanced photocatalytic activity application for photodegradation of Rhodamine B solution is demonstrated for the SrTiO₃ powders doped with Eu3+ions.

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