Low-cost synthesis of carbon nanodots from natural products used as a fluorescent probe for the detection of ferrum(iii) ions in lake water

Xu, Jie; Zhou, Ying; Liu, Shuxian; Dong, Meiting; Huang, Chaobiao

doi:10.1039/c3ay41715h

Cited by 113 publications

(43 citation statements)

References 46 publications

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“…Since Fe 3+ can effectively quench the fluorescence of CDs [19][20][21][22][23][24][25][26], the capability of the current B-CDs as fluorescent probe to quantitatively detect Fe 3+ was also investigated. Figure 4b presents the relationship between the concentration of Fe 3+ ions and the relative fluorescent intensity (F/F 0 ) (F 0 and F are the fluorescence intensity at 359 nm in the absence and presence of ions, respectively).…”

Section: Sensitive and Selective Detection Of Fe 3+ Ionsmentioning

confidence: 99%

“…Among these methods, fluorescence detection is a favorable method due to their high sensitivity, selectivity and fast detection. The increasing probes based on fluorescence quenching response of CDs have been studied recently [19][20][21][22][23][24][25][26]. All the probes show high sensitivity to Fe 3+ , however, some of them exhibit relatively poor selectivity due to the presence of Ag + [19], Pb 2+ [19,21], Hg 2+ [22,26], and Cu 2+ [25].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, accurate and fast determination of Fe(III) is an important issue in the environment and in biological systems. Up to now, numerous methods have been developed for the detection of Fe(III), including flame atomic absorption spectroscopy [14], mass spectrometry [15], electrochemical [16], and fluorescence detection [17][18][19][20][21][22][23][24][25][26]. Among these methods, fluorescence detection is a favorable method due to their high sensitivity, selectivity and fast detection.…”

Section: Introductionmentioning

confidence: 99%

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Fluorescence quenchometric method for determination of ferric ion using boron-doped carbon dots

et al. 2015

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We report on the hydrothermal synthesis of borondoped carbon dots (B-CDs) starting from glucose and boric acid. Doping of the CDs with boron was confirmed by Fourier transform infrared and X-ray photoelectron spectroscopy. The B-CDs have an average diameter of about 4 nm and display blue fluorescence which is dynamically quenched by Fe(III) ions. This finding was exploited to design a method for the determination of Fe(III) in water. The relative fluorescence intensity at 359 nm in the presence and of absence ions is inversely proportional to the concentration of Fe(III) ions, and a Stern-Volmer calibration plot is linear in the concentration range of 0-16 μM, with a 242 nM detection limit. The assay is sensitive, robust and selective.

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Section: Sensitive and Selective Detection Of Fe 3+ Ionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fluorescence quenchometric method for determination of ferric ion using boron-doped carbon dots

et al. 2015

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“…By contrast, the hydrothermal method is considered to be a facile, green, and efficient approach. Recently, natural biomass precursors as raw materials (such as glucose, konjac, chitosan, potato, Prunus mume fruit, cabbage, egg, grass, coffee, and others) for the preparation of functional CDs via the hydrothermal method have gained popularity due to the abundance of these carbon sources, as well as their availability, low cost, and eco-friendliness [14,[20][21][22][23][24][25][26][27][28]. In this regard, the preparation of high quality CDs from a suitable biomass as a carbon source is essential.…”

Section: Physiochemical Characterizationmentioning

confidence: 99%

Green synthesis of fluorescent carbon dots from carrot juice for in vitro cellular imaging

Liu¹,

Liu²,

Park³

et al. 2017

Carbon letters

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We report the use of carrot, a new and inexpensive biomaterial source, for preparing high quality carbon dots (CDs) instead of semi-conductive quantum dots for bioimaging application. The as-derived CDs possessing down and up-conversion photoluminescence features were obtained from carrot juice by commonly used hydrothermal treatment. The corresponding physiochemical and optical properties were investigated by electron microscopy, fluorescent spectrometry, and other spectroscopic methods. The surfaces of obtained CDs were highly covered with hydroxyl groups and nitrogen groups without further modification. The quantum yield of as-obtained CDs was as high as 5.16%. The cell viability of HaCaT cells against a purified CD aqueous solution was higher than 85% even at higher concentration (700 μg mL −1 ) after 24 h incubation. Finally, CD cultured cells exhibited distinguished blue, green, and red colors, respectively, during in vitro imaging when excited by three wavelength lasers under a confocal microscope. Offering excellent optical properties, biocompatibility, low cytotoxicity, and good cellular imaging capability, the carrot juice derived CDs are a promising candidate for biomedical applications.

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“…Yang et al succeeded in using C-dots for the in vivo studies of optical imaging with mice for animal test. Followed by these, as a result of extensive and multidisciplinary efforts, C-dots have found their place in a wide range of applications in nanoprobes [56][57][58][59][60][61][62][63][64][65][66], drug delivery [67][68][69][70][71], therapy [72][73][74][75][76], and optoelectronic devices [77][78][79][80][81][82].…”

Section: Introductionmentioning

confidence: 99%

Characterization and Analytical Separation of Fluorescent Carbon Nanodots

Gong

Liu

et al. 2017

Journal of Nanomaterials

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Carbon nanodots (C-dots) are recently discovered fluorescent carbon nanoparticles with typical sizes of <10 nm. The C-dots have been reported to have excellent photophysical and chemical characteristics. In recent years, the advances in the development and improvement in C-dots synthesis, characterization, and applications are burgeoning. In this review, we introduce the most commonly used techniques for the characterization of C-dots. The characterization techniques for C-dots are briefly classified, described, and illustrated with applied examples. In addition, the analytical separation methods for C-dots (including electrophoresis, chromatography, density gradient centrifugation, differential centrifugation, solvent extraction, and dialysis) are included and discussed according to their analytical characteristics. The review concludes with an outlook towards the future developments in the characterization and the analytical separation of C-dots. The comprehensive overview of the characterization and the analytical separation techniques will safeguard people to use each technique more wisely.

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Low-cost synthesis of carbon nanodots from natural products used as a fluorescent probe for the detection of ferrum(iii) ions in lake water

Cited by 113 publications

References 46 publications

Fluorescence quenchometric method for determination of ferric ion using boron-doped carbon dots

Fluorescence quenchometric method for determination of ferric ion using boron-doped carbon dots

Green synthesis of fluorescent carbon dots from carrot juice for in vitro cellular imaging

Characterization and Analytical Separation of Fluorescent Carbon Nanodots

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