Carboxymethyl hemicellulose hydrogel as a fluorescent biosensor for bacterial and fungal detection with DFT and molecular docking studies

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Jan. 4, 2025

Abstract A new method was developed to quickly produce carboxymethyl hemicellulose (CM-Hemi) and fluorescent nitrogen-doped carbon dots (N–CDs) from sugarcane bagasse (SB). These materials were then combined with calcium chloride (CaCl₂) create hydrogel sensors antibacterial antifungal properties. The CM-Hemi@Ca-N–CDs effective against both Gram-negative ( Escherichia coli ) Gram-positive Staphylococcus aureus bacteria compared CM-Hemi@Ca which give no activity. Both hydrogels also exhibited properties Candida albicans . Molecular docking studies revealed that the had strong binding interactions protein (1.92 A°) compard (2.01 A°), aligned inhibition zone measurements test. fluorescence microscope differences in emitted light color when interacted different types of microorganisms, likely due variations their cell walls. Density functional theory (DFT) calculations indicate incorporation N–CDs into enhances its stability rigidity. This is evidenced by lower energy gap (E g ), higher electron affinity (μ), softness (S) hydrogel. Additionally, formation amide bonds between CM-Hemi contributes increased rigidity hydrogel.These findings supporting th effectiveness as an antibacterial/antifungal sensor.

Language: Английский

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Improving acrylonitrile rubber properties by recycled nano graphene oxide prepared from sugarcane bagasse

Polymer Composites, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 6, 2025

Abstract Naturally occurring inexpensive substance is useful as a raw material like graphite. Graphene oxide (GO) made from sugarcane bagasse (SB) to create nano graphene (GO‐SB). Nitrile rubber (NBR) was used base matrix while (GO‐SB) filler combined at various loadings [2, 4, 6, 8, and 10 Part per hundred part of (phr)]. The impact the prepared loading on physicomechanical curing characteristics NBR nanocomposites examined evaluated. Transmission Electron Microscopy (TEM), x‐ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FT‐IR) were estimate characterize investigated samples. Excellent dispersion (8 phr) in observed using scanning electron microscopy (SEM). agglomerations found be heterogeneous (10 phr). Curing characterizations showed that compounded with had larger maximum minimum torques, torque difference 8 phr, faster cure rate than unfilled compound. equilibrium swelling mechanical demonstrated reinforcing effect contained phr When content increased up Shore A hardness values increased. Highlights nanosized bagasse. verified nanoscale oxide. Nano ingredients are incorporated by mixer. Effect properties products have better physico properties.

Language: Английский

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Potential application of new antimicrobials biological macromolecule of CNT/ZnO-NPs based on hydroxypropyl methylcellulose/shellac as packaging films

International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: 306, P. 141421 - 141421

Published: March 1, 2025

Language: Английский

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Optical and dielectric features of PVC/ZnCo2O4/MWCNTs/TBAI polymers for optoelectronic and energy storage applications

Optical Materials, Journal Year: 2024, Volume and Issue: 154, P. 115625 - 115625

Published: June 4, 2024

Language: Английский

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Enhanced photothermal performance and water purification via silver and gold plasmonic nanoparticles in polyvinyl alcohol: glutaraldehyde/activated carbon hydrogel

Optical and Quantum Electronics, Journal Year: 2024, Volume and Issue: 56(7)

Published: May 21, 2024

Language: Английский

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Development and characterization of fluorescent cellulose succinate hydrogels for efficient chromium adsorption

Journal of Polymer Research, Journal Year: 2024, Volume and Issue: 31(11)

Published: Nov. 1, 2024

Language: Английский

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Self-supplying of hydrogen peroxide nanozyme-based colorimetric sensing array as electronic tongue for biothiol detection and disease discrimination

Talanta, Journal Year: 2025, Volume and Issue: 288, P. 127727 - 127727

Published: Feb. 11, 2025

Language: Английский

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Boosting Dielectric Properties of Polyethersulfone Membranes: A Strategy Using Cross-Linked Graphene Oxide/EDTA/Silane

ECS Journal of Solid State Science and Technology, Journal Year: 2025, Volume and Issue: 14(3), P. 031007 - 031007

Published: March 1, 2025

We investigated development and characterization of composite membranes based on grafted graphene oxide (GO) with ethylenediamine tetraacetic acid (EDTA)/silane loaded onto polyethersulfone (PES) for dielectric applications. Fourier transform infrared analysis confirmed the presence oxygen-containing groups GO introduction new peaks corresponding to EDTA/silane in membrane. X-ray diffraction revealed a shift peaks, indicating successful modification. Raman spectroscopy showed an increase defect ratio (ID/IG) after modification, suggesting interaction between GO. Transmission electron microscopy is expected show morphological changes upon incorporation EDTA/silane. Scanning PES change surface morphology from smooth small pores non-smooth addition GO/EDTA/silane. UV–vis indicated red absorption peak GO/EDTA/silane compared GO, decrease oxygenated groups. Dielectric properties measurements demonstrated enhanced permittivity improved polarization response containing pristine The constant at 1 kHz 2.42 increased gradually 4.82 15% GO/EDTA/Silane-doped composition. This improvement attributed conductive network, high area, functional within

Language: Английский

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Covalently functionalized graphene oxide metal complexes: Versatile nanocatalysts for organic transformations

Materials Science and Engineering B, Journal Year: 2024, Volume and Issue: 310, P. 117671 - 117671

Published: Sept. 4, 2024

Language: Английский

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Utilizing Ceramic Factory Waste to Produce Low-Cost Refractory Ceramics

Recycling, Journal Year: 2024, Volume and Issue: 9(5), P. 98 - 98

Published: Oct. 14, 2024

The use of solid waste such as ceramic sludge, rollers, and magnesite was studied to obtain cheap refractory ceramics at temperatures 1300 °C based on XRF, XRD SEM, EDX, bending strength, dielectric properties. prepared samples were examined. results showed that the significant crystalline phases formed mullite, spinel, corundum. They also mullite hindered formation cordierite enhanced spinel formation. With increased content, microstructure varied from fine grained coarse grained. Bending strength with increasing content bulk density, ranging 10.80 13.50 MPa. Bulk density increase in sintering temperature ranged 1.99 1.94 g/cm3, while percentage porosity water absorption decreased 29.40 38.83, respectively. To examine effect produced characteristics, permittivity (ε′), loss (ε″), AC conductivity (σac) measured frequency range 10−1 Hz 106 Hz. As concentration increased, there a noticeable drop ε′ 35.6 8.2 σac 10−8 s/cm around 10−11 high values resistivity 108 cm/s about 1010 cm/s, suggesting this material might be an excellent insulator.

Language: Английский

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