Journal
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
Volume 11, Issue 3, Pages 1052-1058Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.9b03507
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Funding
- Guangdong Special Support Program [2017TX04C096]
- Key Research Program of Frontier Sciences, CAS [QYZDB-SSW-SLH034]
- Leading Talents of Guangdong Province Program [00201520]
- Shenzhen Science and Technology Research Funding [JCYJ20170413165807008, JCYJ20170818162909200]
- National Natural Science Foundation of China [51702352]
- China Postdoctoral Science Foundation [2019M653126]
- City University of Hong Kong Strategic Research Grant [7005105, 7005264]
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Development of efficient catalysts for ammonia production under ambient conditions is a challenge. In this work, edge-rich black phosphorus nanoflakes (eBP NFs) are synthesized for highly efficient photocatalytic nitrogen fixation. The eBP NFs synthesized by a chemical etching exfoliation method have a uniform size and about 90 nm wide and the flake like structure is enshrouded with crystal-domain edges. Without using any cocatalysts, the eBP NFs catalyze nitrogen fixation at a rate of 2.37 mmol-h(-1).g(-1) under visible-light irradiation. The photocatalytic process is analyzed by photoelectrochemical and transient absorption measurements, which disclose electron transfer from eBP NFs to N-2 for subsequent hydrogenation. Besides the facile and scalable synthesis method, eBP NFs with a high photocatalytic nitrogen fixation efficiency have great potential in ammonia production.
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