期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 707, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.scitotenv.2019.136025
关键词
Adsorbent; Photo-induced desorption; Magnetism; Recyclability
资金
- National Natural Science Foundation of China [21677040, 21377031]
- Natural Science Foundation of Henan Province [182300410121]
- Technology Department of the Henan Science and Technology Fund Project [172102310465]
Convenient and energy-efficient desorption or regeneration processes are prerequisites for the development of an ideal adsorbent. For this work, a novelmagnetic adsorbent (citric acid/Bi2O2CO3/Fe3O4) was controllably synthesized via a facile hydrothermalmethod. The as-prepared materials demonstrated the excellent adsorption of methylene blue (MB), where similar to 70% of the MB was absorbed within 10 min. Interestingly, the desorption process could be triggered by visible light irradiation, and 99% of the absorbed MB was released into solution within 4 h. Further, the magnetic materials could be conveniently recovered using a magnet and regenerated via a model hydrothermal process. Even after two regeneration cycles, approximately 60% adsorption and 63% desorption abilities were retained, which suggested strong potential for the recyclability of these materials. (C) 2019 Elsevier B.V. All rights reserved.
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