Journal
APPLIED SURFACE SCIENCE
Volume 511, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2020.145499
Keywords
Macroporous foam; NiO/BiOI; Step-scheme heterojunction; Build-in electric field; Photocatalysis
Categories
Funding
- Natural Science Foundation of Top Talent of SZTU [2018010801004]
- Hubei Provincial Natural Science Foundation of China [2019CFB568]
- Science and Technology Foundation for Excellent Creative Research Group of Hubei Provincial Department of Education [T201810]
Ask authors/readers for more resources
Herein, a step-scheme heterostructure photocatalyst formed by macroporous NiO foams and BiOI microspheres is successfully fabricated. The as-obtained NiO/BiOI heterostructure can be employed as an effective photocatalyst under solar light for the RhB degradation, and the optimum rate constant of 57.2 x 10(-3) min(-1) is achieved with an optimal mass ratio of NiO to BiOI (10%) in the composite, which is 1.7 and 8.0 times as high as that of singular BiOI and NiO, respectively. The increased light utilization of the macroporous/microspheric hierarchical system and the formation of high quality heterojunction interface between NiO and BiOI are responsible for the improvement in photocatalytic activity. In addition, the underlying step-scheme heterojunction mechanism for efficient charge transportation and separation is also proposed. Our present work demonstrates that the step-scheme heterojunction is a feasible way to obtain high efficiently photocatalysts and might inspire some new strategies in the area of photocatalysis.
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