Cao Baowei, Gong Siwen, Zubairu Siyaka Mj, Liu Lingna, Xu Yunhua, Guo Lei, Dang Rui, Zhu Gangqiang
School of Chemistry and Chemical Engineering, Yulin University, Yulin, China.
School of Physics and Information Technology, Shaanxi Normal University, Xi'an, China.
Front Chem. 2020 Sep 3;8:773. doi: 10.3389/fchem.2020.00773. eCollection 2020.
Er/Yb co-doped BiOI 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/Yb co-doped BiOI sample is better than that of the pristine BiOI and Er-doped BiOI samples. Moreover, Er/Yb co-doped BiOI possesses photocatalytic ability with a red light monochromatic LED lamp (3 W, λ = 630 nm) and an infrared monochromatic LED lamp (100 W, λ = 940 nm) irradiation whose wavelength is longer than the absorption-limiting wavelength of pristine BiOI sample. This phenomenon further verified that the upconversion property of Er and Yb causes the improved photocatalytic efficiency of Er/Yb co-doped BiOI sample.
采用两步化学法合成了Er/Yb共掺杂的BiOI均匀多孔微球光催化剂，该催化剂具有优异的光催化性能和上转换发光性能。通过在可见光和不同单色光照射下对水溶液中双酚A的降解研究了光催化剂的光催化性能。Er/Yb共掺杂BiOI样品的光催化性能优于原始BiOI和Er掺杂BiOI样品。此外，Er/Yb共掺杂BiOI在波长大于原始BiOI样品吸收限波长的红光单色LED灯（3 W，λ = 630 nm）和红外单色LED灯（100 W，λ = 940 nm）照射下具有光催化能力。这一现象进一步证实了Er和Yb的上转换特性导致了Er/Yb共掺杂BiOI样品光催化效率的提高。
