光催化
催化作用
兴奋剂
硼
材料科学
吸附
表面改性
解吸
化学工程
光化学
纳米技术
化学
物理化学
光电子学
有机化学
工程类
作者
Jia Li,Hongshun Zheng,Tong Zhou,Baoye Zi,Qingjie Lu,Dequan Li,Qian Zhang,Zhishi Qiu,Zhongge Luo,Yumin Zhang,B.L. Xiao,Mingpeng Chen,Jin Zhang,Huachuan Sun,Jianhong Zhao,Tianwei He,Zhongqi Zhu,Genlin Zhang,Yuxiao Zhang,Qingju Liu
标识
DOI:10.1016/j.cej.2024.154726
摘要
Boron(B) doping is considered as a promising modification method for TiO2 photocatalyst due to the facilitation of separation and migration of photogenerated carriers. However, the modification mechanisms of bulk or surface doping modes on photocatalyst are controversial, and the catalytic activity still needs to be improved. Here, a bulk and surface B co-doped TiO2 (B(B&S)-TiO2) derived from B-containing Ti-MOF (MIL-125(B)) precursor was demonstrated, which achieved a H2 evolution rate of 9.56 mmol∙g−1∙h−1 under 365 nm light without co-catalyst. Detailed investigations reveal the synergistic effect between bulk and surface co-doped B, which optimizes the microstructure, activates the 3-coordinated O (O3C) atoms of B-Ti-O structural units as active sites, enhances the transfer of photoelectrons and inhibits the recombination, balances H* adsorption–desorption during the photocatalytic reactions. This work exhibits a novel strategy of bulk and surface B co-doped photocatalysts and highlights the potential for achieving high photocatalytic H2 evolution rate without co-catalyst.
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