Journal
MATERIALS LETTERS
Volume 306, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2021.130884
Keywords
Semiconductors; Phosphorene; Photocatalysis; Deoxidation
Funding
- National Natural Science Foundation of China [51708116, 21908220]
- Doctoral Fund of Ministry of Education of China [2019M663139, 2020M672854]
- Natural Science Foundation of Guangdong Province of China [2020A1515010364]
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The metal-free photocatalyst of few-layer phosphorene was prepared using liquid exfoliation method. The photocatalytic degradation experiments showed excellent activity towards tetracycline and the proposed mechanism of degradation involved efficient separation of photogenerated h(+) and e(-).
Herein, liquid exfoliation method was employed to prepare metal-free photocatalyst of few-layer phosphorene using black phosphorus as the precursor and its physicochemical properties were systematically characterized. The photocatalytic degradation experiments show that phosphorene exhibits more excellent photocatalytic activity toward tetracycline (TC) degradation under UV light irradiation with deoxidation. Moreover, the photodegradation rate constant of TC during the first 15 min of reaction is 0.2004 min(-1), which is 4.61 times of that under the pure UV light irradiation. Furthermore, the catalytic mechanism of phosphorene toward TC degradation was proposed and the excellent photocatalytic performance is mainly contributed to the efficient separation of photogenerated h(+) and e(-).
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