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Fabrication of Er3+/Yb3+ Co-Doped Bi5O7I Microsphere With Upconversion Luminescence and Enhanced Photocatalytic Activity for Bisphenol A Degradation.

ABSTRACT: Er3+/Yb3+ co-doped Bi5O7I uniform porous microsphere photocatalysts were synthesized by a two-step chemical method, which possesses excellent photocatalytic performance and upconversion luminescence property. The photocatalytic performance of the photocatalysts was studied by degradation of bisphenol A in aqueous solution under visible light and different monochromatic light irradiation. The photocatalytic performance of Er3+/Yb3+ co-doped Bi5O7I sample is better than that of the pristine Bi5O7I and Er3+-doped Bi5O7I samples. Moreover, Er3+/Yb3+ co-doped Bi5O7I possesses photocatalytic ability with a red light monochromatic LED lamp (3 W, ? = 630 nm) and an infrared monochromatic LED lamp (100 W, ? = 940 nm) irradiation whose wavelength is longer than the absorption-limiting wavelength of pristine Bi5O7I sample. This phenomenon further verified that the upconversion property of Er3+ and Yb3+ causes the improved photocatalytic efficiency of Er3+/Yb3+ co-doped Bi5O7I sample.

SUBMITTER: Cao B 

PROVIDER: S-EPMC7496766 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Fabrication of Er<sup>3+</sup>/Yb<sup>3+</sup> Co-Doped Bi<sub>5</sub>O<sub>7</sub>I Microsphere With Upconversion Luminescence and Enhanced Photocatalytic Activity for Bisphenol A Degradation.

Cao Baowei B   Gong Siwen S   Zubairu Siyaka Mj SM   Liu Lingna L   Xu Yunhua Y   Guo Lei L   Dang Rui R   Zhu Gangqiang G  

Frontiers in chemistry 20200903

Er<sup>3+</sup>/Yb<sup>3+</sup> co-doped Bi<sub>5</sub>O<sub>7</sub>I uniform porous microsphere photocatalysts were synthesized by a two-step chemical method, which possesses excellent photocatalytic performance and upconversion luminescence property. The photocatalytic performance of the photocatalysts was studied by degradation of bisphenol A in aqueous solution under visible light and different monochromatic light irradiation. The photocatalytic performance of Er<sup>3+</sup>/Yb<sup>3+</sup>  ...[more]

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