Micro & nano letters | |
Nitrogen and phosphorus-doped green carbon dots with ‘turn-off’ fluorometric sensor for Fe 3+ ions detection | |
article | |
You Zhang1  Mingyang Li1  Yanan Ding1  Le Dai1  Yue Wu1  Yibo Zheng3  Xiaoguang Li1  Li Guan1  Xu Li1  | |
[1] Hebei Key Laboratory of Photo-Electricity Information and Materials, College of Physics Science and Technology, Hebei University;Contribution: Methodology;Hebei Key Laboratory of Optoelectronic Information and Geo-detection Technology, Hebei GEO University | |
关键词: carbon dots; doping; quantum dots; solvo-thermal method; surfactants; | |
DOI : 10.1049/mna2.12149 | |
学科分类:计算机科学(综合) | |
来源: Wiley | |
【 摘 要 】
Carbon dots (CDs) were paid more and more attention for detecting ferric ions (Fe 3+ ) containing in the organism or environment. Thus, nitrogen and phosphorus co-doping green CDs were synthesized using p-Phenylenediamine as the carbon source and phosphoric acid as phosphorus source by the solvo-thermal method. As-prepared CDs were characterized by morphology, optical properties, and surface functional groups. The CDs can emit better green light peak at 511 nm excited by 380 nm UV light. Excitation independence property of N, P-CDs was determined by measuring the photoluminescence (PL) spectra with different excitation wavelengths. The ions detection ability was investigated by analyzing the emission intensity of CDs in eight different kinds of ions solutions and different concentrations of Fe 3+ ions solutions. The N, P-CDs show high selectivity towards Fe 3+ ions with a limit of detection (LOD) of 0.11 μM in the concentration region of 300 to 450 μM. The results illuminated that this kind of CDs can be a candidate material for Fe 3+ ions detection.
【 授权许可】
CC BY|CC BY-ND|CC BY-NC|CC BY-NC-ND
【 预 览 】
Files | Size | Format | View |
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RO202302050004718ZK.pdf | 1042KB | download |