Electrospun polylactic acid/ tungsten oxide/ amino-functionalized carbon quantum dots (PLA/WO3/N-CQDs) fibers for oil/water separation and photocatalytic decolorization

Nugraha, Muhammad Wahyu; Wirzal, Mohd Dzul Hakim; Ali, Fathilah; Roza, Liszulfah; Sambudi, Nonni Soraya

doi:10.1016/j.jece.2021.106033

Cited by 25 publications

(5 citation statements)

References 55 publications

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“…Similar trend is observed for the C=C stretching at 1608 cm −1 due to the presence of unsaturated aromatic compounds in orange peel [ 34 , 35 ]. Lastly, the peaks at 1081.31 to 1181.32 cm −1 indicates the presence of C-O stretching in all spectra [ 36 , 37 ]. Addition of hydrophilic filler OPP which is rich in cellulose fibres has slightly modified the hydrophobic nature of PLA.…”

Section: Discussionmentioning

confidence: 99%

Modification of Poly(lactic acid) with Orange Peel Powder as Biodegradable Composite

et al. 2022

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Traditional fossil-based plastic usage and disposal has been one of the largest environmental concerns due to its non-biodegradable nature and high energy consumption during the manufacturing process. Poly(lactic acid) (PLA) as a renewable polymer derived from natural sources with properties comparable to classical plastics and low environmental cost has gained much attention as a safer alternative. Abundantly generated orange peel waste is rich in valuable components and there is still limited study on the potential uses of orange peel waste in reinforcing the PLA matrix. In this study, orange peel fine powder (OPP) synthesized from dried orange peel waste was added into PLA solution. PLA/OPP solutions at different OPP loadings, i.e., 0, 10, 20, 40, and 60 wt% were then casted out as thin films through solution casting method. Fourier-transform infrared spectroscopy (FTIR) analysis has shown that the OPP is incorporated into the PLA matrix, with OH groups and C=C stretching from OPP can be observed in the spectra. Tensile test results have reviewed that the addition of OPP has decreased the tensile strength and Young’s modulus of PLA, but significantly improve the elongation at break by 49 to 737%. Water contact angle analysis shows that hydrophilic OPP has modified the surface hydrophobicity of PLA with a contact angle ranging from 70.12° to 88.18°, but higher loadings lead to decrease of surface energy. It is proven that addition of OPP improves the biodegradability of PLA, where PLA/60 wt% OPP composite shows the best biodegradation performance after 28 days with 60.43% weight loss. Lastly, all PLA/OPP composites have better absorption in alkaline solution.

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Section: Discussionmentioning

confidence: 99%

Modification of Poly(lactic acid) with Orange Peel Powder as Biodegradable Composite

et al. 2022

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“…The functionalization of CQDs depends on starting substrate and route chosen for fabrication, which affects functional features such as biosensing and imaging [32] . CQDs surface passivation is a potential option to consider in terms of its biological applications [33,34] . Different kinds of macromolecules such as polyethylene glycol (PEG), polyethyleneimine (PEI), etc., which may be either negatively, positively charged, or neutral, are used for surface modification of CQDs [35,36] .…”

Section: Carbon Quantum Dots (Cqds)mentioning

confidence: 99%

“…[32] CQDs surface passivation is a potential option to consider in terms of its biological applications. [33,34] Different kinds of macromolecules such as polyethylene glycol (PEG), polyethyleneimine (PEI), etc., which may be either negatively, positively charged, or neutral, are used for surface modification of CQDs. [35,36] Neutral and negative charges on CQD surfaces are beneficial for medicinal applications [30,37] because neutral moieties may abscond from the immune system, and electrostatic repulsion due to negatively charged moieties may avoid adsorption upon protein molecules.…”

Section: Modification Of Cqds Surfacementioning

confidence: 99%

Carbon Quantum Dots as Multi‐Purpose Nanomaterial in Stem Cell Therapy

Juybari

Faramarz

Sadeghi³

et al. 2023

Chemistry & Biodiversity

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Some issues, such as their obscure fate or low survival rate into the body during stem cell therapy, should be addressed to boost efficiency. Nanotechnology offers a suitable solution to combat such limitations. Carbon quantum dots (CQDs) are carbon-based nanomaterials and may be used as multi-purpose compounds in stem cell therapy. CQDs are excellent choices for stem cell labeling thanks to their special features such as optical properties and good biocompatibility. Besides, they can modulate the biological function of stem cells, such as their proliferation, homing ability, and differentiation properties. Considering the charismatic feature of CQDs and their broad unique effect on stem cells, the current review aims to summarize the advancements in this field. Hence, we first focused on CQDs synthesis and their applications. In the next section, the stem cell categories will be discussed, and the final part is dedicated to the recent research evaluating the impact of CQDs on stem cell therapy.

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“…They suggested that composite membranes based on PLA could prevent secondary pollution, since the PLA they used in their study is an environmentally friendly polymer. According to Nugraha et al [16] investigated the change of wettability behavior of electrospun PLA fiber by electrospinning technique by adding tungsten oxide (WO 3 )/amino-functionalized carbon quantum dots (N-CQD) to the polymer matrix. The modified PLA/WO 3 /N-CQDs fibers showed significantly improved hydrophobicity of the fibers while maintaining the surface super-oleophilicity.…”

Section: Figure 1 Chemical Structure Of Pla [4]mentioning

confidence: 99%

Polilaktik Asit-Aktif Kömür Elektrospun Mat Üretimi ve Karakterizasyonu

Doğancı

BULUŞ

et al. 2023

Düzce Üniversitesi Bilim Ve Teknoloji Dergisi

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Polylactic acid (PLA) is used as a potential polymer for consumer products and biomedical applications. With the increasing environmental and sustainability concerns associated with traditional petrochemical-based polymers, PLA applications continue to increase every day. Activated carbon (A.C.) is a substance obtained by carbonization of softwood parts such as linden and willow and is used as an antidote in industrial applications because it absorbs the toxin and prevents the absorption of toxins from the small intestine into the blood. It is a toxin absorber due to its adhesion to surfaces. A.C. the biggest problem with the fact that over time, the gaseous pollutants A.C. is a gradual filling of adsorption surfaces. In this study, PLA nanofibers reinforced with biyokompozit elektrospinning technique has been secured for the production and structural (FTIR, Fourier-Transform İnfrared Spectroscopy), morphological (FEGSEM, Field Emission Gun Scanning Electron Microscope), mechanical (Tensile Test) and biological (Cell Culture) by providing a characterization of the material properties were determined. With the obtained biocomposites, it will be able to be the ideal filtration material with a longer life and a large surface area that can be used in health sector applications.

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Electrospun polylactic acid/ tungsten oxide/ amino-functionalized carbon quantum dots (PLA/WO3/N-CQDs) fibers for oil/water separation and photocatalytic decolorization

Abstract: Electrospun polylactic acid/ tungsten oxide/ amino-functionalized carbon quantum dots (PLA/WO3/N-CQDs) fibers for oil/water separation and photocatalytic decolorization (2021)

Cited by 25 publications

References 55 publications

Modification of Poly(lactic acid) with Orange Peel Powder as Biodegradable Composite

Modification of Poly(lactic acid) with Orange Peel Powder as Biodegradable Composite

Carbon Quantum Dots as Multi‐Purpose Nanomaterial in Stem Cell Therapy

Polilaktik Asit-Aktif Kömür Elektrospun Mat Üretimi ve Karakterizasyonu

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