Green Synthesis of Fluorescent Carbon Quantum Dots for Detection of Hg2+

Xu, Yue; Tang, Chunjing; Huang, Hong; Sun, Chaoqun; Zhang, Yakun; Ye, Qun-Feng; Wang, Ai‐Jun

doi:10.1016/s1872-2040(14)60765-9

Cited by 70 publications

(20 citation statements)

References 33 publications

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“…The detection limit of the method was 0.1 µM. Up to now, various sensors for Hg 2+ based on CDs have been fabricated with signal-off process [93,98,115,138,155,167,[223][224][225][226][227]. Most of the experiments were designed reasonably, and the results were good.…”

Section: Response To Hg 2+ and Relevant Sensing Applicationsmentioning

confidence: 99%

Carbon Based Dots and Their Luminescent Properties and Analytical Applications

Dong

Jian-Hua

Chi

2016

Carbon Nanoparticles and Nanostructures

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Carbon based dots (CDs) composed of sp 2 carbon structures and surface functional groups are a new kind of carbon nanomaterials, exhibiting unique luminescent properties due to the quantum confinement and edge effects. This chapter introduces CDs in detail from their synthetic strategies, morphological and structural characteristics, luminescent properties and mechanisms, and sensing applications. The synthesis methods are summarized as "top-down" and "bottomup" approaches. Luminescent properties discussed include photoluminescence, upconversion luminescence, chemiluminescence, electrochemiluminescence. Sensing applications mainly refer to the chemical and biological sensors based on the luminescent properties of CDs. This chapter provides an overview of the research field and gives future perspectives for developing the exciting materials.

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Section: Response To Hg 2+ and Relevant Sensing Applicationsmentioning

confidence: 99%

Carbon Based Dots and Their Luminescent Properties and Analytical Applications

Dong

Jian-Hua

Chi

2016

Carbon Nanoparticles and Nanostructures

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“…erefore, considerable effort has been made to synthesize C-dots from abundant natural resources. For example, C-dots derived from apple juice emit a wavelength of 428 nm with a quantum yield of 6.4% under the excitation of ultraviolet light of 340 nm [5]. Quantum yield of C-dots prepared from strawberries is 6.3%.…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis of Highly Luminescent Carbon Quantum Dots from Lemon Juice

Hoan

Tam

Pham

2019

Journal of Nanotechnology

121

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Highly luminescent carbon dots (C-dots) were synthesized by the one-pot simple hydrothermal method directly from lemon juice using different temperatures, time, aging of precursors, and diluted solvents to control the luminescence of C‐dots. The obtained C-dots were characterized by high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectrophotometry, dynamic light scattering, ultraviolet-visible spectrophotometry, and photoluminescent spectrophotometry. The results show that C‐dots had strong green light emission with quantum yield in the range of 14.86 to 24.89% as a function of hydrothermal temperatures. Furthermore, light emission that is dependent on hydrothermal time, aging of precursor, and diluted solvent was observed. These results suggest that the C‐dots have potential application in optoelectronics and bioimaging.

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“…Figure 4 is UV-Vis absorption and emission spectrum of the as-prepared Cdots. There is an obvious peak located at 283 nm, which probably originated from the π-π* transition of the conjugated C=C bond [7]. A maximum PL emission is obtained at an emission wavelength of 515 nm with excitation wavelength at 420 nm.…”

Section: Resultsmentioning

confidence: 93%

“…In comparison with artificial sources, some natural products can be used to synthesize Cdots by more simple methods. Hydrothermal carbonization is a low-cost, environmentally friendly, and non-toxic method that has been used to prepare novel carbon materials from food products such as orange juice [5], carrot juice [6], apple juice [7], etc. Lemon is a citrus plant, very familiar to everyone because it has many uses, many benefits in everyday life.…”

Section: Introduction mentioning

confidence: 99%

Green emission carbon quantum dots from lemon juice for selective detection of Fe3+ ions

Hung¹

2019

MaP

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In this article carbon quantum dots (Cdots) were prepared by a facile, green, economical hydrothermal method of the mixed deionized water and lemon juice. Optical and structural properties of the Cdots have been extensively studied by UV–visible and fluorescence spectroscopy, x-ray diffraction (XRD) techniques, and high resolution TEM (HR-TEM). Surface functionality of Cdots has been illustrated by Fourier transform infrared spectroscopy (FTIR). The fabricated Cdots emit bright green light with broad spectrum. The Cdots exhibit captivating sensitivity and selectivity toward Fe3+ with a linear range from 0 to 80 ppm and a detection limit of 38.08 ppm.

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Green Synthesis of Fluorescent Carbon Quantum Dots for Detection of Hg2+

Cited by 70 publications

References 33 publications

Carbon Based Dots and Their Luminescent Properties and Analytical Applications

Carbon Based Dots and Their Luminescent Properties and Analytical Applications

Green Synthesis of Highly Luminescent Carbon Quantum Dots from Lemon Juice

Green emission carbon quantum dots from lemon juice for selective detection of Fe3+ ions

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