期刊
CATALYSIS COMMUNICATIONS
卷 121, 期 -, 页码 53-56出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.catcom.2018.12.017
关键词
Photocatalysis; Semiconductors; Microstructure; Bi/BiOI; HG(0) removal; Fluorescent lamp irradiation
资金
- National Natural Science Foundation of China [51676064, 51306046]
- Young Core Instructor Project in the Higher Education Institutions of Henan Province [2016GGJS-038]
- Science and Technology Research Project of Henan Province [182102310810]
BiOI microparticles with different I/Bi molar ratios were synthesized via a facile coprecipitation method in the absence and presence of EDTA-2Na and were characterized by various techniques. Their activity were evaluated using toxic elemental mercury as model pollutant under fluorescent lamp irradiation. The presence of EDTA-2Na would lead to the production of Bi, facilitating an effective separation of electron and hole pairs due to the transfer of electrons from BiOI surface to M. The lower the I/Bi molar ratio, the higher the Hg-0 removal efficiency. The superoxide radicals and holes were the main reactive species for enhanced Hg-0 removal.
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