Carbon dots preparation as a fluorescent sensing platform for highly efficient detection of Fe(III) ions in biological systems

Hamishehkar, Hamed; Ghasemzadeh, Bahar; Naseri, Alireza; Salehi, Roya; Rasoulzadeh, Farzaneh

doi:10.1016/j.saa.2015.06.061

Cited by 40 publications

(14 citation statements)

References 42 publications

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“…The higher values of 'K' and 'n' demonstrate a preferable interaction of the Au/Bi2S3@TiO2 NTAs and Fe 3+ ions [66] . The detection limit is 0.221 µM according to this formula (3σ/S), which is much lower than the ones found in literature, as shown in Table 1 [67][68][69][70] . Furthermore, the method of synthesizing fluorophores is simple and cheap compared to the previous methods [71][72][73][74] .…”

Section: Resultsmentioning

confidence: 48%

TiO2 nanotube arrays decorated with Au and Bi2S3 nanoparticles for efficient Fe3+ ions detection and dye photocatalytic degradation

Huang

Shen

et al. 2020

Journal of Materials Science & Technology

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Due to increasingly serious environmental problems, many researchers are investigating green clean-energy to solve the world's energy supply issues. So a strategy that Au nanoparticles (Au NPs) and bismuth sulfide (Bi2S3) NPs are used to evenly decorate TiO2 nanotube arrays (TiO2 NTAs) was carried out. Composite materials demonstrated enhanced solar light absorption ability and excellent photoelectrochemical performance. This was attributed to the presence of Bi2S3 NPs with a narrow band gap and the decoration with noble metallic Au NPs which resulted in local surface plasmon resonance (LSPR) effects. The Au/Bi2S3@TiO2 NTAs composites exhibit improved photocatalytic activity for the degradation of methylene blue (MB) under irradiation of UV and visible light. Moreover, the Au/Bi2S3@TiO2NTAs exhibits high fluorescence emission at 822 nm. Due to the better binding affinity between Bi2S3, TiO2 and Fe 3+ ions, the synthesized nanocomposites exhibit high selectivity to Fe 3+ ions. The number of binding sites for Au/Bi2S3@TiO2 NTAs was estimated to be 1.41 according to the double logarithmic regression method. The calculated value of "K" was 1862 M -1 . Fluorescence emission intensity decreases with increasing concentration (30 μM to 5000 μM). The detection limit of the synthesized sensor is 0.221 µM.

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Section: Resultsmentioning

confidence: 48%

TiO2 nanotube arrays decorated with Au and Bi2S3 nanoparticles for efficient Fe3+ ions detection and dye photocatalytic degradation

Huang

Shen

et al. 2020

Journal of Materials Science & Technology

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“…Moreover, the Stern‐Volmer plot showed a good linear range over the concentration of Fe 3+ , ranging from 2 to 6 μM (Figure B). The LOD was measured to be 0.62 μM having signal to noise ratio (S/N) of 3, while according to the U.S. environmental protection agency, the detection limit of Fe 3+ ion in drinking water is ∼ 5.357 μM, and also the calculated LOD was lower than those of earlier reported carbon‐based nanomaterials ( Table ) . In addition, we also compared the analytical performance of as‐synthesized GB‐CDs with other carbon dots, derived from natural resources (Table ) .…”

Section: Resultsmentioning

confidence: 99%

“…The LOD was measured to be 0.62 μM having signal to noise ratio (S/N) of 3, while according to the U.S. environmental protection agency, the detection limit of Fe 3 + ion in drinking water is ∼ 5.357 μM, [45] and also the calculated LOD was lower than those of earlier reported carbon-based nanomaterials ( Table 1). [46][47][48][49][50][51][52][53][54] In addition, we also compared the analytical performance of as-synthesized GB-CDs with other carbon dots, derived from natural resources ( Table 2). [55][56][57][58][59] Therefore, the proposed CDs could be promising nanoprobe for the detection of Fe 3 + ion.…”

Section: Selectivity Studiesmentioning

confidence: 99%

A Facile Synthesis of Green‐Blue Carbon Dots from Artocarpus lakoocha Seeds and Their Application for the Detection of Iron (III) in Biological Fluids and Cellular Imaging

et al. 2019

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Herein, a facile, green and eco‐friendly approach has been applied for the synthesis of fluorescent green‐blue carbon dots (GB‐CDs) through the one‐pot hydrothermal treatment of Artocarpus lakoocha seeds for the first time and entirely characterized via a variety of instrumental techniques like fluorescent spectroscopy, Transmission Electron Microscopy (TEM), X‐Ray Photoelectron Spectra (XPS), X‐Ray diffraction (XRD) and Fourier Transform Infra‐red (FTIR) analysis. The as‐prepared GB‐CDs displayed high fluorescent quantum yield (QY) up to 38.5% and high photostability based on which GB‐CDs were successfully applied as a sensitive nanoprobe for the detection of Fe3+ ion. The sensing of Fe3+ shows a linear range from 2 to 6 μM and the limit of detection was found to be 0.62 μM. The sensing of Fe3+ was further investigated in the bona fide sample like river water and human blood serum. In addition, to explore the potential application, MTT assay was carried out on SH‐SY5Y neuroblastoma cells. The results showed negligible cytotoxicity as well as high cell viability, which revealed that GB‐CDs could be utilized as a fluorescent probe in living cells.

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“…[ 8,9 ] In recent years, carbon dots (C‐dots) have attracted tremendous attention due to their intriguing properties, including high photostability, low toxicity, better biocompatibility, eco‐friendly preparation as well as superior optical properties. [ 10 ] In addition, synthesis methods of C‐dots were straightforward, and the raw materials were readily available, such as graphene, [ 11 ] cyclodextrin, [ 12 ] and cellulose. [ 13 ] Based on these characteristics and advantages, the C‐dots absorbed into fluorescent materials was used for photocatalysis, [ 14 ] energy conversion, [ 15 ] cell imaging, [ 16 ] fluorescent detection, [ 17–19 ] and drug delivery.…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive Detection of Fe³⁺ Ions Using Waterborne Polyurethane‐Carbon Dots Self‐Healable Fluorescence Film

Xiao

Shi

Nan

et al. 2020

Macro Materials & Eng

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In this study, nitrogen‐doped carbon dots (N‐C‐dots) are synthesized via a green and gentle electrochemical‐hydrothermal method. The N‐C‐dots are grafted into the backbone of waterborne polyurethane (WBPU) synthesized from hexamethylene diisocyanate and polycarbonate diol (PCDL). Due to the introduction of N‐C‐dots, the WBPU is functionalized including being able to self heal and specifically identified Fe3+. The self‐healing performance of the WBPU‐N‐C‐dots film is principally attributed to the hydrogen bonding effect of the WBPU and the N‐C‐dots. On the other hand, based on the quenching of fluorescent characteristics of the WBPU‐N‐C‐dots film, it is successfully used in the detection of Fe3+, showing a wide detection range, good selectivity, and high sensitivity. What's more, the tensile strength of the sample is enhanced from 3.50 to 7.12 MPa when the N‐C‐dots content is increased in the WBPU and the thermal stability is improved as a result of the formation of the more thermally‐stable network structures. Interestingly, compared to the traditional solution detection in WBPU‐N‐C‐dots emulsion with the limit of detection of 2.23 × 10−6 m, the detection has the lower limit of detection of 2.19 × 10−6 m in the WBPU‐N‐C‐dots film. These results show that the WBPU‐N‐C‐dots film exhibits great application as an intelligent response‐type material.

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Carbon dots preparation as a fluorescent sensing platform for highly efficient detection of Fe(III) ions in biological systems

Cited by 40 publications

References 42 publications

TiO2 nanotube arrays decorated with Au and Bi2S3 nanoparticles for efficient Fe3+ ions detection and dye photocatalytic degradation

TiO2 nanotube arrays decorated with Au and Bi2S3 nanoparticles for efficient Fe3+ ions detection and dye photocatalytic degradation

A Facile Synthesis of Green‐Blue Carbon Dots from Artocarpus lakoocha Seeds and Their Application for the Detection of Iron (III) in Biological Fluids and Cellular Imaging

Highly Sensitive Detection of Fe³⁺ Ions Using Waterborne Polyurethane‐Carbon Dots Self‐Healable Fluorescence Film

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Carbon dots preparation as a fluorescent sensing platform for highly efficient detection of Fe(III) ions in biological systems

Cited by 40 publications

References 42 publications

TiO2 nanotube arrays decorated with Au and Bi2S3 nanoparticles for efficient Fe3+ ions detection and dye photocatalytic degradation

TiO2 nanotube arrays decorated with Au and Bi2S3 nanoparticles for efficient Fe3+ ions detection and dye photocatalytic degradation

A Facile Synthesis of Green‐Blue Carbon Dots from Artocarpus lakoocha Seeds and Their Application for the Detection of Iron (III) in Biological Fluids and Cellular Imaging

Highly Sensitive Detection of Fe3+ Ions Using Waterborne Polyurethane‐Carbon Dots Self‐Healable Fluorescence Film

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Highly Sensitive Detection of Fe³⁺ Ions Using Waterborne Polyurethane‐Carbon Dots Self‐Healable Fluorescence Film