Catalytic evaluation of biocompatible chitosan-stabilized gold nanoparticles on oxidation of morin

Bulut, Onur; Yilmaz, M. Deniz

doi:10.1016/j.carbpol.2021.117699

Cited by 13 publications

(12 citation statements)

References 49 publications

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“…We therefore concluded that Que-AgNPs play a pivotal role as a true nanocatalyst in the catalytic oxidation process. The k app values for the catalyzed and uncatalyzed reactions were determined using linear curves obtained from the logarithmic data of UV–vis changes versus the reaction time, which indicates a pseudo -first-order reaction relating to the amount of morin with an excess of H 2 O 2 (Figure C,D) . When eq was applied, the k app values were calculated as follows: (1.40 ± 0.08) × 10 –3 s –1 with Que-AgNPs and H 2 O 2 , (3.00 ± 0.06) × 10 –4 s –1 with H 2 O 2 and without Que-AgNPs, and (1.10 ± 0.05) × 10 –4 s –1 with a catalyst and without H 2 O 2 (Figure D).…”

Section: Resultsmentioning

confidence: 99%

“…19,20 Morin, an organic dye, has frequently been used as a model compound for evaluation of the catalytic activity of the catalysts in catalytic oxidation processes using hydrogen peroxide (H 2 O 2 ) as an oxidizing agent. 21 Several nanoparticle catalysts, i.e., gold nanoparticles, 21,22 platinum nanoparticles, 23,24 and palladium nanoparticles, 25 have been reported to date for the morin oxidation. Although their catalytic activities are straightforward, these metals are expensive and not easily available raw materials.…”

Section: Introductionmentioning

confidence: 99%

“…Catalytic oxidation is one of the most widely known methods for the removal of industrial dyes from wastewater. , Morin, an organic dye, has frequently been used as a model compound for evaluation of the catalytic activity of the catalysts in catalytic oxidation processes using hydrogen peroxide (H 2 O 2 ) as an oxidizing agent . Several nanoparticle catalysts, i.e., gold nanoparticles, , platinum nanoparticles, , and palladium nanoparticles, have been reported to date for the morin oxidation. Although their catalytic activities are straightforward, these metals are expensive and not easily available raw materials.…”

Section: Introductionmentioning

confidence: 99%

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Quercetagetin-Stabilized Silver Nanoparticles for the Oxidation of Morin

Bulut

Yilmaz

2022

ACS Appl. Nano Mater.

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Herein, we present a facile and convenient method for the preparation of silver nanoparticles (AgNPs) in the presence of quercetagetin, a unique plant flavonoid, as a reducing and stabilizing agent. The nanoparticles (Que-AgNPs) were characterized using UV–vis spectroscopy, transmission electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, and dynamic light scattering techniques. Que-AgNPs display a spherical shape and a crystalline structure. The size of Que-AgNPs was calculated to be 93 ± 0.4 nm in diameter with polydispersity index value of 0.3. Que-AgNPs were evaluated as nanocatalysts in the oxidative degradation of morin with hydrogen peroxide (H2O2). The catalytic degradation of morin was completed within 20 min, demonstrating excellent catalytic properties for Que-AgNPs. Kinetic studies revealed that the reaction follows pseudo-first-order kinetics and the apparent rate constant (k app) is positively correlated with the concentration of Que-AgNPs; however, k app is inversely associated with the morin concentration. Moreover, the cytotoxicity of Que-AgNPs was evaluated by the cell viability test considering two cell lines, i.e., HeLa and MCF-7. The results show that Que-AgNPs possess dose-dependent cytotoxic activity.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Quercetagetin-Stabilized Silver Nanoparticles for the Oxidation of Morin

Bulut

Yilmaz

2022

ACS Appl. Nano Mater.

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“…The engineering of nanozymes with soft polymer scaffolds, mimicking the ability of a polypeptide to protect the catalytic center of enzymes and avoid undesired reactions, would provide a better biocompatibility of nanozymes for biomedical applications . Different strategies have been employed for the immobilization and stabilization of nanozymes within a polymeric scaffold, by chemical grafting of the polymer to the nanozyme or by its physical entrapment in the polymer network. − The postsynthetic modification of nanozymes with hydrophilic polymers has enabled the development of hydrogel-coated nanozymes, with enhanced stability in biological media …”

Section: Introductionmentioning

confidence: 99%

Nanozyme–Cellulose Hydrogel Composites Enabling Cascade Catalysis for the Colorimetric Detection of Glucose

Baretta

Gabrielli

Frasconi

2022

ACS Appl. Nano Mater.

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Catalytic cascades obtained from the combination of nanozymes, which are nanomaterials with enzyme-like activity, and natural enzymes have drawn much attention for biosensing and biomedical applications. A key consideration in the development of cascade reaction systems is the integration of nanozymes with enzymes to boost the overall catalytic performance. Here, we report an efficient one-pot approach for the preparation of an enzyme− nanozyme hydrogel composite for cascade catalysis. Prussian blue (PB) nanoparticles (NPs) were prepared by using mild synthetic conditions in a cellulose-based hydrogel network in the presence of glucose oxidase (GOx), resulting in the simultaneous immobilization of PB NPs and active GOx in the hydrogel. This integrated system not only displays peroxidase-like activity relative to the PB NPs but also reveals an enhanced cascade catalytic performance for the colorimetric detection of glucose due to the proximity effect of the enzyme−nanozyme system within the hydrogel matrix. Compared to the analogue mixture with GOx in solution, the composite hydrogel shows enhanced glucose detection and improved stability. The developed colorimetric assay was successfully applied for the analysis of glucose in human serum samples, demonstrating its potential in clinical diagnosis. The versatility of this one-pot protocol holds promise for the development of different multienzyme systems, leading to efficient cascade catalysis for sensing applications.

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“…(PABA-SAL)@AuNPs Biomedical applications [70] APTMS-CS-AuNPs Antimicrobial [71] AuNPs/CS-GR-IL-Fc cry/SPCE Measuring prostate-specific antigen [72] AuNPs/Lac/Alg Detection of Fe(III) [73] CS-AuNPs Biomedical devices [74] CS-AuNPs Raman spectroscopy [75] CS-AuNPs Biosensor [76] CS-AuNPs Antimicrobial [77] CS-AuNPs siRNA delivery and silencing [78] CS-AuNPs Detection of uric acid [79] CS-AuNPs Nanocatalyst [80] CS-AuNPs Biomemristor [81] CS-AuNPs Antibacterial [82] CS-TiNPGF Determination of acetaminophen [83] Fe3O4@Alg-Au NPs Nanocatalyst [84] GNPs-chitosan-horseradish peroxidase Biosensor [85] Ibuprofen lysinate-CS-AuNPs Anti-inflammatory [86] Nano gold-marine algae sodium-Alg Electric transport [87] PAA/CS/Au nanocomposite hydrogel Antimicrobial activity [88] SA-AuNPs Detection of ascorbic acid [89] Sea urchin-PVP-AuNPs Transient immune activation [90] SUGNPs SERS platform [91] ZnSA-AuAMP hydrogel Controllable regulation of nanozyme activity [92] Abbreviations: (PABA-SAL)@AuNPs: Gold nanoparticles/polyaniline boronic acid/sodium alginate aqueous nanocomposite, APTMS: 3-aminopropyltrimethoxysilane, AuAMP: 5'-monophosphate capped Au nanoclusters, AuNPs/Lac/Alg: gold nanoparticles on novel nanocomposite lactose/alginate, CS-GR-IL-Fc: Chitosan, graphene, ionic liquid and ferrocene, NPGF: Nano-porous gold film, PAA/CS/Au: Polyacrylic acid/chitosan/gold, PVP: Polyvinylpyrrolidone, SA-AuNPs: Reduced/stabilized gold nanoparticles, SERS: Surface Enhanced Raman scattering, SPCE: Screen-printed carbon electrode, SUGNPs: Sea urchin-like gold nanoparticles.…”

Section: Materials Applicationmentioning

confidence: 99%

Application of Marine-Based Gold Nanomaterials in Cancer Therapy: A Mini-Review

Baghban¹,

Khoradmehr²,

Nabipour³

et al. 2021

Preprint

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Cancer is one of the health concerns in modern societies. The application of nanotechnology in medical sciences has created new possibilities for the diagnosis, imaging and the treatment of tumors in humans. The present article reviews the application of marine-based gold nanoparticles in diagnosing and treating cancer. The main data were collected from research article on the application of different marine-based gold nanoparticles in detecting and imaging cancer cells as well as in drug delivery system in treatment of cancer. Chitosan is the most used marine natural compound used to fabricate gold nanocomposites and the most reported application of this type of nano-composites is related to drug delivery system. Despite the excellent anticancer potential of different marine natural products, less studies have been conducted on the use of their compositions with gold nanoparticles in cancer therapy than other materials. Moreover, most reports available in this filed are related to their application as a drug delivery system not anticancer drug. In general, there are still challenges and limitations to the use of nanoparticles in medicine, it is hoped that in the near future nanoparticles will create a dramatic revolution not only in oncology but also in medicine.

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Catalytic evaluation of biocompatible chitosan-stabilized gold nanoparticles on oxidation of morin

Cited by 13 publications

References 49 publications

Quercetagetin-Stabilized Silver Nanoparticles for the Oxidation of Morin

Quercetagetin-Stabilized Silver Nanoparticles for the Oxidation of Morin

Nanozyme–Cellulose Hydrogel Composites Enabling Cascade Catalysis for the Colorimetric Detection of Glucose

Application of Marine-Based Gold Nanomaterials in Cancer Therapy: A Mini-Review

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