Nano-particulate Structures with Glucose-Derived Char and Compacted Fumed Silica in Gaseous and Aqueous Media

Носач, Л. В.; Воронин, Е. Ф.; Pakhlov, E.M.; Charmas, B.; Skubiszewska–Zięba, J.; Skwarek, Ewa; Janusz, W.; Gun’ko, Vladimir M.

doi:10.1007/978-3-319-56422-7_56

Cited by 6 publications

(4 citation statements)

References 23 publications

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“…This is due to the interaction of glucose with the Ch-OL backbone. Similar observation has been reported previously in the FESEM image of glucose-bounded silica . Again, to identify the elemental composition of Ch-OL/CQD@Glu, the EDAX analysis is carried out and is presented in Figure d.…”

Section: Resultssupporting

confidence: 74%

“…Similar observation has been reported previously in the FESEM image of glucose-bounded silica. 39 Again, to identify the elemental composition of Ch-OL/CQD@Glu, the EDAX analysis is carried out and is presented in Figure 1d. The weight%, atomic %, and error% are summarized in the table inset in Figure 1d, including the elemental mapping images in the inset of Figure 1d.…”

Section: Electron Microscopic Studymentioning

confidence: 99%

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Ex Vivo Glucose Detection in Human Blood Serums with Carbon Quantum Dot-Doped Oleic Acid-Treated Chitosan Nanocomposites

Patra,

Sahu,

Mahanty

et al. 2023

ACS Appl. Bio Mater.

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Herein, carbon quantum dot (CQD)-doped oleic acid (OL)-treated chitosan (Ch) nanocomposites (Ch-OL/CQD) are prepared by a simple solution technique for nonenzymatic ex vivo detection of glucose in human blood samples. From the architecture of the structure, it is observed that the agglomeration of CQD is restricted by OL-treated Ch polymeric chain, and simultaneously the inhibition in the entanglement of Ch-OL polymeric chains in the matrix is attained by the incorporation of CQD, thereby proving the high stability of the nanocomposite. In vitro detection of glucose is studied by the "Turn ON−OFF" fluorescence technique which is again evidenced by the shining core image of nanocomposites in HRTEM. A highly selective glucose sensing against interfering sugars due to the specific spatial arrangement of the hydroxyl groups of glucose, leading to prominent hydrogen-bonding interaction is established, with a very low limit of detection (LOD) of 1.51 μM, covering a wide linear domain from 0 to 10 4 μM, R 2 = 0.98. Moreover, the calculated glucose levels in real human blood serums by Ch-OL/CQD nanocomposites are compared with a commercial glucometer, with recovery percentages from 95.8 to 107.3%. The clinical potential is supported by studying the stimuli responsiveness of the nanocomposites as a function of pH and ionic strength, encouraging the operation of the sensor in a complex biological scenario. The present work may offer an opportunity for the monitoring of glucose in the blood for successful diabetes management.

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Section: Resultssupporting

confidence: 74%

Section: Electron Microscopic Studymentioning

confidence: 99%

Ex Vivo Glucose Detection in Human Blood Serums with Carbon Quantum Dot-Doped Oleic Acid-Treated Chitosan Nanocomposites

Patra,

Sahu,

Mahanty

et al. 2023

ACS Appl. Bio Mater.

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“…Throughout the earlier few decades, nano metal oxides adsorbents were combined with polymers that had held great potential in thorium(IV) recovery. Fumed silica was prepared using mechanochemical activation of wetted nano-silica, it was used as a matrix for the preparation of a composite with glucose and by the carbonization of glucose gave weakly porous char nanoparticles [23], the electrical and physical characteristics of nanosilica were obtained in aqueous solution [24]. Nano-silica was supported with metal oxides (M x O y ) to form inorganic nanocomposites [25].…”

Section: Introductionmentioning

confidence: 99%

Performance of poly sulfonamide/nano-silica composite for adsorption of thorium ions from sulfate solution

Cheira

2020

SN Appl. Sci.

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A new composite of poly sulfonamide/nano-silica composite (PSA/silica) was synthesized from the polymerization of sulfonamide in the presence of the prepared nano-silica. The prepared nano-silica, poly sulphonamide (PSA), and PSA/ silica composites were utilized for Th(IV) adsorption from sulfate solution. These composites described by XRD, surface area analysis, SEM-EDX, and FT-IR techniques. The influence parameters on the Th(IV) adsorption were pH solution, ionic strength, contact time, adsorbent dose, Th(IV) concentration, and temperature besides the coexisting ions. At best parameters (pH4, 0.1 g adsorbent amount, and 45 min contact time), 200 mg/L Th(IV) ions were quantitatively adsorbed from 100 mL solution. The maximum uptake capacities of the nano-silica, PSA, and PSA/silica composites attained 122, 75, and 197 mg/g at 298 K. From the kinetic and equilibrium data were found to the adsorption processes of three composites fitted well with kinetic model of pseudo-second-order and Langmuir adsorption isotherm model. Thermodynamic studies resulted that negative values for ∆H° indicated an exothermic while positive values ∆S° showed random behavior for Th(IV) adsorption, while negative values of ∆G° indicated spontaneous Th(IV) adsorption. The maximum Th(IV) desorption from the loaded adsorbents performed by 0.1 M/L HCl.

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“…[36] The method of gas-phase solvate-stimulated mechanosorption modification (GSSMSM) of highly dispersed silica (nanosilica) with inorganic salts and non-volatile organic compounds obtained under standard conditions (room temperature and atmospheric pressure) has been developed at the Chuiko Institute of Surface Chemistry of NAS of Ukraine in recent years. [37][38][39][40][41][42][43] It consists in low-intensity mechanical activation of the salt/nanosilica mixture in a controlled atmosphere using a ball mill. This simplifies significantly the process of formation of a layer or clusters of inorganic salts on the nanoparticles surface and makes it as technologically advanced as possible.…”

Section: Introductionmentioning

confidence: 99%

In situ synthesis of AgI on the nanosilica surface for potential application as a cloud seeding material

Nosach,

Bodnar Yankovych,

Skwarek

et al. 2024

ChemPhysChem

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A series of nanosilica/AgI composites was synthesized by in situ reactions between silver nitrate and ammonium iodide deposited on the nanosilica surface using the gas‐phase solvate‐stimulated mechanosorption modification (GSSMSM) under both dry and wet conditions. The characterization of the synthesized materials was performed by X‐ray diffraction (XRD), SEM/EDX (Scanning Electron Microscopy‐Energy Dispersive X‐ray), thermogravimetric (TGA) and gas sorption methods. As a result of the mechanosorption modification of nanosilica, the bulk density of the samples synthesized in the dry and wet medium increases from 45 g/l for initial nanosilica to 249 g/l and 296 g/l for the modified samples, respectively. The specific surface area of the composites decreased in compared to the nanosilica precursor. The SEM data showed a denser aggregate structure of the nanocomposites compared to the initial nanosilica. The XRD, SEM/EDX and TEM/EDX data indicated the formation of AgI clusters. The AgI particle size was in the range of 6‐45 nm. The ice‐forming activity of the AgI‐containing samples was examined as well. The sample with a smaller size of silver iodide on the surface exhibited superior ice‐forming properties, and considering the quantity of utilized AgI, the prepared samples hold promise for application in this field.

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Nano-particulate Structures with Glucose-Derived Char and Compacted Fumed Silica in Gaseous and Aqueous Media

Cited by 6 publications

References 23 publications

Ex Vivo Glucose Detection in Human Blood Serums with Carbon Quantum Dot-Doped Oleic Acid-Treated Chitosan Nanocomposites

Ex Vivo Glucose Detection in Human Blood Serums with Carbon Quantum Dot-Doped Oleic Acid-Treated Chitosan Nanocomposites

Performance of poly sulfonamide/nano-silica composite for adsorption of thorium ions from sulfate solution

In situ synthesis of AgI on the nanosilica surface for potential application as a cloud seeding material

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