Carbon Nitride Quantum Dots: A Novel Chemiluminescence System for Selective Detection of Free Chlorine in Water

Tang, Yurong; Su, Yingying; Yang, Na; Zhang, Lichun; Lv, Yi

doi:10.1021/ac5005162

Cited by 323 publications

(212 citation statements)

References 77 publications

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“…Diverse traditional techniques have been used to fabricate tissue engineered scaffolds which include: drawing, melt molding, template synthesis, freeze drying, gas foaming, particulate leaching, solid-free forming, self-assembly and phase separation (Feng et al 2002;Glicklis et al 2000;Liu et al 1999;Madihally and Matthew 1999;Martin 1996;Mikos et al 1994;Mooney et al 1996;Murugan and Ramakrishna 2006;Ondarçuhu and Joachim 1998;Schoof et al 2001;Tang et al 2014;Thomson et al 1996). Although each of these techniques possesses some advantages, all of them fail to present an ideal scaffold with well-controlled mandatory scaffold nanofeatures like fiber spatial arrangement, dimensions, size distribution, geometry and pore size.…”

Section: Tissue Engineeringmentioning

confidence: 99%

Eco-friendly Electrospun Polymeric Nanofibers-Based Nanocomposites for Wound Healing and Tissue Engineering

El‐Sherbiny¹,

Ali²

2015

Advanced Structured Materials

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Recently, nanofibers have been investigated with remarkable increased applicability in different fields due to their numerous advantages such as large surface area and controlled morphology. Nanofibers can be prepared using three main techniques, namely electrospinning, phase separation, and self-assembly. Of these, electrospinning is the most commonly used technique and also seems to exhibit the most desirable results. This chapter provides an overview of the electrospinning of eco-friendly polymers and polymeric nanocomposites for biomedical applications with an emphasis on their applications in wound healing and tissue regenration. Controlling the characteristics of the developed electrospun nanocomposites via tailoring the collectors used during electrospinning as well as carefully changing their surface chemistry for the proper design of wound healing nanofibrous dressings and tissue engineering nanofibrous scaffolds will be explored. Also, the challenges associated with the use of electrospun polymeric nanofibers-based nanocomposites for wound healing and tissue engineering will be described.

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Section: Tissue Engineeringmentioning

confidence: 99%

Eco-friendly Electrospun Polymeric Nanofibers-Based Nanocomposites for Wound Healing and Tissue Engineering

El‐Sherbiny¹,

Ali²

2015

Advanced Structured Materials

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“…Thus, various chemiluminescence (CL) systems have received considerable attention in the past years. To further improve the sensitivity of CL assays, various catalysts have been investigated, including metal nanoclusters [1], metallic nanoparticles (in particular noble metal nanoparticles) [5,6], metal oxide nanoparticles [7,8], carbon dots [9][10][11], layered double hydroxide (LDH) [4,12], quantum dots [13,14], and LDH-quantum dot nanocomposites [15].…”

Section: Introductionmentioning

confidence: 99%

MIL-53(Fe) MOF-mediated catalytic chemiluminescence for sensitive detection of glucose

et al. 2016

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Various analytical applications of metal-organic frameworks (MOFs) have been rapidly developed in the past few years. However, the employment of MOFs as catalysts in chemiluminescence (CL) analysis is rare. Here, for the first time, we found that MIL-53(Fe) MOFs could significantly enhance the CL of luminol in the presence of HO in an alkaline medium. The CL intensity in the luminol-HO-MIL-53(Fe) system was about 20 times higher than that in the luminol-HO system. Moreover, the XRD pattern of MIL-53(Fe) after CL reaction was almost the same as that of the original MIL-53(Fe), confirming the catalytic role of MIL-53(Fe) in the luminol-HO-MIL-53(Fe) system. The possible mechanism behind the enhancing phenomenon was discussed based on the results from the CL spectra, FL probe experiments, and active oxygen species measurements. By coupling with the glucose oxidase-based catalytic oxidation reaction, a sensitive and selective CL method was developed for the detection of glucose. There is a linear relationship between the logarithm of CL intensity and the logarithm of glucose concentration in the range from 0.1 to 10 μM, and a detection limit of 0.05 μM (S/N = 3) is obtained. The proposed method has been applied to the determination of glucose in human serum samples with satisfactory results. Graphical abstract MIL-53(Fe) MOFs are found to greatly enhance the chemiluminescence emission of the luminol-HO system, and this finding resulted in a new chemiluminescence method for biosensing of glucose when coupled with the glucose oxidase.

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“…The CGO on the surface of the nanocolumns results in increased surface reactions, and the single crystal nanocolumns allow for efficient electron transfer for these reactions at the electrode surface. The electrochemical reduction mechanism of NaOCl at CGO-SnO 2 electrodes, which has been shown to occur at roughly -0.42 V (Kodera et al 2005;Olivé-Monllau et al 2010Thiagarajan et al 2011;Kiss et al 2014;Senthilkumar and Zen 2014;Tang et al 2014;Muñoz et al 2015;Salazar et al 2015;Wang and Anzai 2015) is as follows:…”

Section: Electrochemical Detection Of Free Chlorinementioning

confidence: 99%

Crumpled graphene oxide decorated SnO2 nanocolumns for the electrochemical detection of free chlorine

et al. 2017

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A crumpled graphene oxide-SnO 2 nanocolumn (CGO-SnO 2 ) composite electrode was fabricated using aerosol-based techniques. First, SnO 2 nanocolumn thin films were fabricated using an aerosol chemical vapor deposition (ACVD) technique. The surface of the nanocolumn was then decorated with CGO by electrospray deposition. The CGOSnO 2 electrode was utilized for the electrochemical detection and determination of the free chlorine concentration in aqueous solutions using linear sweep voltammetry (LSV) and amperometric i-t curve techniques. The CGO-SnO 2 electrodes worked through the direct electrochemical reduction of hypochlorite ions (ClO -) on the surface of the electrode, which was used to determine the free chlorine concentration. The electrodes operate over a wide linear range of 0.1-10.08 ppm, with a sensitivity of 2.69 lA lM -1 cm -2 . Further, selectivity studies showed that these electrodes easily conquer the electrochemical signals of other common ions in drinking water distribution systems, and only shows the electrochemical reduction signals of free chlorine. Finally, the CGO-SnO 2 electrodes were successfully employed for the detection of free chlorine in tap water solutions (St. Louis, MO 63130, USA) with a sensitivity of 5.86 lA lM -1 cm -2 . Overall, the sensor fabricated using simple and scalable aerosol-based techniques showed a comparable performance to previous studies on amperometric chlorine sensing using carbonbased electrodes.

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Carbon Nitride Quantum Dots: A Novel Chemiluminescence System for Selective Detection of Free Chlorine in Water

Cited by 323 publications

References 77 publications

Eco-friendly Electrospun Polymeric Nanofibers-Based Nanocomposites for Wound Healing and Tissue Engineering

Eco-friendly Electrospun Polymeric Nanofibers-Based Nanocomposites for Wound Healing and Tissue Engineering

MIL-53(Fe) MOF-mediated catalytic chemiluminescence for sensitive detection of glucose

Crumpled graphene oxide decorated SnO2 nanocolumns for the electrochemical detection of free chlorine

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