Waste frying oil as a precursor for one-step synthesis of sulfur-doped carbon dots with pH-sensitive photoluminescence

Hu, Yaoping; Yang, Jing; Tian, Jiangwei; Li, Jia; Yu, Junsheng

doi:10.1016/j.carbon.2014.05.081

Cited by 352 publications

(201 citation statements)

References 60 publications

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“…When the X-rays interacts with a crystallite C-dots sample, the constructive interference is produced, and these diffracted X-rays are then detected, processed, and counted, revealing the average structure of C-dots [86,87,89,[130][131][132][133][134][135][136]. Figure 3(A) displays a typical XRD pattern of polyethylenimine (PEI) functionalized C-dots (C-dots-PEI) derived from microwave-assisted pyrolysis of glycerol in the presence of branched PEI [86].…”

Section: X-ray Diffractionmentioning

confidence: 99%

“…Taking together all the information from literatures which characterized C-dots by UV-vis and PL spectroscopy [31,37,41,85,87,103,139], all types of C-dots are active in the UV-vis region of the electromagnetic spectrum, and the fluorescent emission of C-dots shows ex -dependent behavior. Recently, the timeresolved PL spectroscopy has been reported to be useful in measuring the photoluminescent lifetime of C-dots [37,41,87,103,139]. A typical example of UV-vis absorption spectra, PL spectra at different ex and time-resolved PL spectra of waste frying oil-derived sulfur-doped carbon dots (S-C-dots) [87], is depicted in Figure 4.…”

Section: Ultraviolet-visible and Photoluminescence Spectroscopymentioning

confidence: 99%

“…Recently, the timeresolved PL spectroscopy has been reported to be useful in measuring the photoluminescent lifetime of C-dots [37,41,87,103,139]. A typical example of UV-vis absorption spectra, PL spectra at different ex and time-resolved PL spectra of waste frying oil-derived sulfur-doped carbon dots (S-C-dots) [87], is depicted in Figure 4. In addition, it is important to note that the UV-vis and PL spectroscopy can be used together to determine the QY of C-dots.…”

Section: Ultraviolet-visible and Photoluminescence Spectroscopymentioning

confidence: 99%

“…Since the first isolation of C-dots from SWCNT by polyacrylamide gel electrophoresis (PAGE) in 2004 [2], the reports associated with analytical separation techniques of C-dots are emerging. Impressive successes in this area include not only electrophoresis [94,[102][103][104][105][106], but also chromatography [91, 95-97, 100, 101, 107-109], density gradient centrifugation [29], differential centrifugation [98,110], solvent extraction techniques [99,[111][112][113], and dialysis [20,21,87,98,114,115].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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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Section: X-ray Diffractionmentioning

confidence: 99%

Section: Ultraviolet-visible and Photoluminescence Spectroscopymentioning

confidence: 99%

Section: Ultraviolet-visible and Photoluminescence Spectroscopymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Characterization and Analytical Separation of Fluorescent Carbon Nanodots

Gong

Liu

et al. 2017

Journal of Nanomaterials

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“…C-Dots can be simply produced from organic materials such as paper, food waste, watermelon, flowers and vegetables through a hydrothermal process [10][11][12][13][14]. In addition, C-Dots are found and could be obtained from waste frying oil [15,16]. Because it has abundant hydrocarbon chains and can be easily damaged caused by heating, frying oil or waste frying oil is very easily synthesized become C-Dots.…”

Section: Introductionmentioning

confidence: 99%

Performance of photocatalyst based carbon nanodots from waste frying oil in water purification

Aji¹,

Wiguna²,

Susanto³

et al. 2016

AIP Conference Proceedings

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Abstract. Carbon Nanodots (C-Dots) from waste frying oil could be used as a photocatalyst in water purification with solar light irradiation. Performance of C-Dots as a photocatalyst was tested in the process of water purification with a given synthetic sewage methylene blue. The tested was also conducted by comparing the performance C-Dots made from frying oil, waste fryng oil as a photocatalyst and solution of methylene blue without photocatalyst C-Dots. Performance of C-Dots from waste frying oil were estimated by the results of absorbance spectrum. The results of measurement absorbance spectrum from the process of water purification with photocatalyst C-Dots showed that the highest intensity at a wavelength 664 nm of methylene blue decreased. The test results showed that the performance of photocatalyst CDots from waste frying oil was better in water purification. This estimated that number of particles C-dots is more in waste frying oil because have experieced repeated the heating process so that the higher particles concentration make the photocatalyst process more effective. The observation of the performance C-Dots from waste frying oil as a photocatalyst in the water purification processes become important invention for solving the problems of waste and water purification.

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Carbon Dots: Emerging Green Nanoprobes and Their Diverse Applications

Agarwal¹,

Bhatia²

2021

Functionalized Nanomaterials for Catalytic Application

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Waste frying oil as a precursor for one-step synthesis of sulfur-doped carbon dots with pH-sensitive photoluminescence

Cited by 352 publications

References 60 publications

Characterization and Analytical Separation of Fluorescent Carbon Nanodots

Characterization and Analytical Separation of Fluorescent Carbon Nanodots

Performance of photocatalyst based carbon nanodots from waste frying oil in water purification

Carbon Dots: Emerging Green Nanoprobes and Their Diverse Applications

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