Journal
JOURNAL OF CLEANER PRODUCTION
Volume 220, Issue -, Pages 668-676Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jclepro.2019.02.168
Keywords
TiO2 nanosheets; n-p-n heterojunction; Charge separation; Oxygen activation; Sulfathiazole
Categories
Funding
- Foundation of National Key Scientific Instruments and Equipment Development Project of China [2014YQ060773]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
Ask authors/readers for more resources
The severe pollution and scarcity of clean water occurred worldwide. The photocatalysis on semiconductors is highly expected in decontamination or purification of water, although the performance of current semiconductors is extremely restricted by the low efficiency in utilization of sustainable solar energy. An effective strategy for this restriction is the construction of their surface heterojunctions. Unfortunately, the constructed heterojunctions have to be heterotypic because of the band discontinuities at the isotypic interface. Moreover, in most of cases, the constructing does not necessarily improve their performance efficiently due to the inertness of the ground state oxygen in trapping of the separated electrons. In this work, well-faceted TiO2 with coexposed (001) and (101) and selective deposition of alpha-Fe2O3 and Fe/Co-N-4 on the (001) facets was acquired. The overall photocatalytic activity of the well designed composite in degradation of sulfathiazole has enhanced significantly by as much as 5.91 times compared to the bare faceted TiO2, and remained almost the same in 40 recycle usages. The significant performance of the designedly constructed composite was attributed to the remarkably enhanced light absorption, efficient separation of photo-induced charge carriers, oxygen activation and trapping of separated electrons through the Fe/Co-N-4 structure and the n-p-n dual heterojunction. (C) 2019 Elsevier Ltd. All rights reserved.
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