Enhanced N 2 photofixation activity of flower-like BiOCl by in situ Fe(III) doped as an activation center
Journal of Colloid and Interface Science, ISSN: 0021-9797, Vol: 584, Page: 174-181
2021
- 57Citations
- 26Captures
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Metrics Details
- Citations57
- Citation Indexes57
- 57
- CrossRef13
- Captures26
- Readers26
- 26
Article Description
Photocatalytic nitrogen fixation has been considered to be a safe, green, eco-friendly, and sustainable technology. However, photoinduced activation of inert dinitrogen is an important factor hindering the development of this technology. Herein, in-situ Fe 3+ doped flower-like BiOCl with highly active sites exposure was prepared by a solvent thermal method, which has excellent performance of N 2 photofixation. Compared with virgin BiOCl with no nitrogen fixation activity, Fe-BiOCl reached 30 μmol·L −1 ·h −1 ammonia evolution rate under simulated sunlight without any sacrificial reagent. Characterization results demonstrated that the enhancement of N 2 photofixation capacity was mainly attributed to the in-situ doped Fe 3+ in BiOCl, the doped Fe 3+ not only acts as a reaction center for N 2 activation also as an “electron transfer bridge” trapping and migrating electrons from BiOCl to N 2 molecules. Furthermore, the transformation of crystal facets from virgin BiOCl (0 0 1) to Fe-BiOCl (1 1 0) and (1 0 2) is more conducive for the exposure and accessibility of iron reactive sites. This work developed a potential strategy by in-situ introducing Fe 3+ active sites in BiOCl semiconductor substrate, which establishes a good basis for the application of semiconductor catalysts in nitrogen fixation.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S002197972031300X; http://dx.doi.org/10.1016/j.jcis.2020.09.111; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85092533091&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/33069017; https://linkinghub.elsevier.com/retrieve/pii/S002197972031300X; https://dx.doi.org/10.1016/j.jcis.2020.09.111
Elsevier BV
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