期刊
APPLIED SURFACE SCIENCE
卷 556, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2021.149785
关键词
Z-scheme; N2 fixation; Ternary heterojunction; No sacrificial agent catalysis
类别
资金
- Shaanxi Provincial Natural Science Basic Research Project [101-425219017]
- Doctoral Initial Fund of Xi'an University of Technology [101-451118004]
- National Natural Science Foundation of China [51802255, 51872225, 51672211]
- National Key Research and Development Program of China [2017YFE0193900]
- Natural Science Foundation of Shaanxi Province [2020JZ-47]
- Hundred Talent Program of Shaanxi Province
- Key Laboratory Project of Shaanxi Education Department [18JS070]
The TiO2-Au-BiOI heterojunction exhibited superior photocatalytic performance for N2 photofixation, outperforming other heterostructured photocatalysts and showing promising potential for future applications.
Aiming at comparing the charge separation efficiencies of various heterojunctions, such as p-n junction, metal-semiconductor junction, Z-scheme junction, TiO2-Au, TiO2-BiOI, TiO2-BiOI-Au and TiO2-Au-BiOI were synthesized by using n-type TiO2, p-type BiOI and plasmon metal Au as components for photocatalytic nitrogen fixation. The as-prepared Z-scheme TiO2-Au-BiOI photocatalyst showed the highest photocatalytic performance for N2 photofixation with 543.53 mu mol L-1h-1 g-1 in the pure water system, which is 1.68 times higher than that of TiO2-BiOI-Au nanocomposite, 1.85 times higher than that of TiO2-BiOI and 6.69 times higher than that of TiO2-Au, revealing superiority of the heterojunctions of TiO2-Au-BiOI in kinetics among these different heterostructured photocatalysts during the photocatalytic N2 reduction process. Moreover, the as-prepared TiO2Au-BiOI exhibited considerable performance under real natural environment, showing a promising potential in future application.
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