Electrospun polyacrylonitrile nanofibers as graphene oxide quantum dot precursors with improved photoluminescent properties

Zaca-Moran, Orlando; Ramírez, José Saúl Padilla; Herrera-Pérez, J. L.; Dı́az-Reyes, J.

doi:10.1016/j.mssp.2021.105729

Cited by 9 publications

(6 citation statements)

References 71 publications

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“…The fabrication of GOQDs was carried out by the electrospinning technique from PAN electrospun fibers previously reported by Zaca-Moran O. et al [ 22 ]. The fibers were fabricated using an electrospinning system (Spellman High Voltage Dc Supply) at 15 kV, with a double syringe pump (Kd Scientific), a precursor flow rate of 0.5 ml/h, a linear force of 20 lb/min and a working distance (syringe-circular copper collector) of 15 cm.…”

Section: Methodsmentioning

confidence: 99%

Nonlinear optical response of graphene oxide quantum dots fabricated from electrospun polyacrylonitrile fibers

Gómez

Morán

Rojas-López

et al. 2023

Heliyon

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Section: Methodsmentioning

confidence: 99%

Nonlinear optical response of graphene oxide quantum dots fabricated from electrospun polyacrylonitrile fibers

Gómez

Morán

Rojas-López

et al. 2023

Heliyon

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“…GQDs were prepared in different solvents via a one-step solvothermal method. 55 These can be dissolved in polar organic solvents and exhibit high stability. For other solvents like DMF, acetone, tetrahydrofuran, or water, the PL emission lies between 475 and 515 nm.…”

Section: Effect Of Ph Solvent On Pl Emissionmentioning

confidence: 99%

“…For other solvents like DMF, acetone, tetrahydrofuran, or water, the PL emission lies between 475 and 515 nm. 55 The pH-dependent PL behavior is an exciting factor, and the variation was observed in the PL intensities on varying the pH. The PL peak changes color from red to blue over pH 12, stays stable for pH 4 to 8, and retains PL intensity for both low and high pH.…”

Section: Effect Of Ph Solvent On Pl Emissionmentioning

confidence: 99%

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Bioresource-Based Graphene Quantum Dots and Their Applications: A Review

Sohal

Singla

Malode

et al. 2023

ACS Appl. Nano Mater.

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Environmental worsening, energy crises, and various other factors have enhanced the demand for facile, cheap, and green approaches for creating emerging materials from bioresources. In recent times, graphene quantum dots (GQDs) are the most developing zero-dimensional nanomaterials owing to exclusive electronic and optical properties. Biomass-derived GQDs have been considered an advanced material and have gained complete attention because of their green, inexpensive, nonsustainable, environmental-friendly, and recyclable nature. This review elucidates the current challenges and the use of bioprecursors (e.g., rice husk, plant leaves, honey, coffee) and the methodologies (top-down and bottom-up) of their conversion into ecofriendly GQDs. Biomass resources are converted into ecofriendly GQDs and a facile, low-cost, scalable synthesis. Biomass-derived GQDs are in great demand due to attractive properties like large surface area, low toxicity, and good biocompatibility. Various parameters like absorption, surface and edge states, and quantum confinement affecting the physical, chemical, and electrochemical properties of GQDs are discussed. This review also focuses further on the result of heteroatom doping, pH, and solvent on the photoluminescence (PL) emission of GQDs. The optical and electrochemical sensors based on biomass-derived GQDs are explored in detail. Biomass-derived GQDs have tremendous performance in the biomedical field and energy applications due to their very low toxicity and biocompatibility. This review addresses the future approaches and possible research directions in biomass-derived GQDs. GQDs display minimal cytotoxic reactivity, superior biocompatibility, and chemical insensitivity. To enhance the optoelectronic and physicochemical characteristics of GQDs, their properties can be tuned via surface/edge functionalization or doping. Monitoring the concentrations of pollution gases severely harming the biosphere requires developing more precise and sensitive sensors. Doped GQDs can significantly increase their capacity to adsorb. The reliable gas sensors based on doped GQDs could be a viable replacement for the present sensors available in the market.

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“…Polyacrylonitrile (PAN) nanofibers were also used as a starting material for GQD production [ 50 ]. Dispersion of PAN in DMF was deposited by electrospinning on a collecting metal plate.…”

Section: Graphene Quantum Dots Synthetic Strategiesmentioning

confidence: 99%

Shedding Light on Graphene Quantum Dots: Key Synthetic Strategies, Characterization Tools, and Cutting-Edge Applications

2021

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During the last 20 years, the scientific community has shown growing interest towards carbonaceous nanomaterials due to their appealing mechanical, thermal, and optical features, depending on the specific nanoforms. Among these, graphene quantum dots (GQDs) recently emerged as one of the most promising nanomaterials due to their outstanding electrical properties, chemical stability, and intense and tunable photoluminescence, as it is witnessed by a booming number of reported applications, ranging from the biological field to the photovoltaic market. To date, a plethora of synthetic protocols have been investigated to modulate the portfolio of features that GQDs possess and to facilitate the use of these materials for target applications. Considering the number of publications and the rapid evolution of this flourishing field of research, this review aims at providing a broad overview of the most widely established synthetic protocols and offering a detailed review of some specific applications that are attracting researchers’ interest.

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Electrospun polyacrylonitrile nanofibers as graphene oxide quantum dot precursors with improved photoluminescent properties

Cited by 9 publications

References 71 publications

Nonlinear optical response of graphene oxide quantum dots fabricated from electrospun polyacrylonitrile fibers

Nonlinear optical response of graphene oxide quantum dots fabricated from electrospun polyacrylonitrile fibers

Bioresource-Based Graphene Quantum Dots and Their Applications: A Review

Shedding Light on Graphene Quantum Dots: Key Synthetic Strategies, Characterization Tools, and Cutting-Edge Applications

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