Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 255, Issue -, Pages 1105-1111Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2017.08.104
Keywords
Solid phase synthesis; Carbon quantum dots; Fe3+; Photocatalytic degradation; Detection
Funding
- National Natural Science Foundation of China [21401113]
- Startup Foundation for Advanced Talents of Nanyang Normal University
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A facile and one-step strategy has been developed for the preparation of highly fluorescent nitrogen and phosphor co-doped carbon quantum dots (NP-CQDs) through the thermal treatment of the mixture of citric acid and O-phosphorylethanolamine. The as-prepared NP-CQDs emit strong blue-green light under irradiation of 365 nm light and show emission maxima at 475 nm in aqueous solution. And these NP-CQDs exhibit great stability in high-salt conditions, excellent photostability and a high quantum yield of about 8.45%. Interestingly, the NP-CQDs have been successfully utilized for the sensitive and selective fluorometric detection of Fe3+ without interference from other ions in aqueous solution. Moreover, we have found that the NP-CQDs can enhance the photocatalytic activity of TiO2 for the degradation of dyes under simulated sunlight irradiation. (C) 2017 Elsevier B.V. All rights reserved.
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