Journal
CHEMICAL ENGINEERING JOURNAL
Volume 410, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2020.128280
Keywords
BCN nanosheets; Band structure; Photocatalysis; Uranium; Visible light
Categories
Funding
- Science Challenging Project [TZ2018004]
- National Natural Science Foundation of China [11775214, 51803205]
Ask authors/readers for more resources
Non-metal photocatalysts, carbon-doped BN (BCN) nanosheets, were successfully used to extract uranium from aqueous solution with a U(VI) separation ratio of 97.4% achieved after 1.5-hour visible irradiation. BCN-80 showed good reusability and stability, with the enhanced U(VI) photoreduction attributed to the synergistic effect of photoinduced electrons and formed ketyl radicals.
Effectively separating uranium from aqueous solution is pivotal in the sustainable development of the nuclear industry and environmental protection. In this work, non-metal photocatalysts, carbon-doped BN (BCN) nanosheets were used to extract uranium by the photocatalytic reduction technique, and the doping in the form of carbon rings can regulate the bandgap and electronic structure by manipulating carbon amount. Benefiting from the porous structure and strong visible-light absorption, the U(VI) separation ratio of 97.4% could be achieved after 1.5-hour visible irradiation with an apparent rate value of 2.97 h(-1) over BCN-80. Additionally, BCN-80 displayed good reusability and stability with the U(VI) separation ratio > 90% even after five cycles, and the enhanced U(VI) photoreduction was attributed to the synergistic effect of photoinduced electrons and formed ketyl radicals. This work demonstrates the great potential of BCN materials in U(VI) enrichment and will lay the foundation for further developing novel semiconductor photocatalysts.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available