Journal
SEPARATION AND PURIFICATION TECHNOLOGY
Volume 226, Issue -, Pages 117-127Publisher
ELSEVIER
DOI: 10.1016/j.seppur.2019.05.093
Keywords
BiVO4 microspheres; Graphitic carbon nitride quantum dots; Nitrogen-doped carbon quantum dots; Ternary heterostructure; Photocatalytic activity; Water purification
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Funding
- Youth Talent Lifting Project of Jilin Province [181907]
- National Natural Science Foundation of China [21407059]
- Project of State Forestry Administration of China [201504502]
- Major Science and Technology Tender Special of Jilin Province [20170203001SF]
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In this study, a ternary heterostructure photocatalyst was synthesized by co-anchoring the graphitic carbon nitride quantum dots (CNQDs) and nitrogen-doped carbon quantum dots (NCDs) on the surface of BiVO4 microspheres. The as-synthesized BiVO4/CNQDs/NCDs ternary heterostructure exhibits the excellent photo catalytic activity for degradation of rhodamine B (RhB, dye) and tetracycline (TC, antibiotic) under visible-light illumination. Eventually, it is found that the BiVO4/CNQDs/NCDs shows the much better photoreactivity both for RhB and TC degradation in comparison with that of pure BiVO4, BiVO4/CNQDs, and BiVO4/NCDs samples, respectively. The improvement of photocatalytic performance is due to the efficient separation and transport of photogenerated charge carriers, resulting in formation of a ternary heterostructure system. This work will be useful for the construction of other ternary heterostructure photocatalysts application in waste water purification.
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