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A new hybrid material was created by blending sodium titanate ceramics (Na2Ti3O7/Na2Ti6O13) with a polyvinyl alcohol (PVA) matrix, resulting in enhanced semiconductive characteristics. The synthesis process involved intense ultrasonic treatment and subsequent heat treatment at 900 °C. Utilizing a solvent casting method, Na2Ti3O7/Na2Ti6O13/PVA composites were fabricated. Raman spectra confirmed the presence of PVA chains and distinctive bands of sodium titanates. Elemental analysis verified the existence of Na and Ti in both composites. Morphological observations revealed the formation of irregular agglomerates upon introducing sodium titanates into the PVA structure, leading to a rise in the average surface roughness (Ra) from ~ 1.5 to 7.9 nm post-incorporation of heated Na2Ti3O7/Na2Ti6O13. Differences in morphology between samples loaded with unheated and heated Na2Ti3O7/Na2Ti6O13 suggested a more effective particle incorporation into the polymeric matrix after heat treatment. Electrical measurements indicated that the composite loaded with unheated Na2Ti3O7/Na2Ti6O13 exhibited the lowest electrical resistance (105 Ω) and a relaxation time of 3.16 × 10− 5 s. These results demonstrate that the inclusion of sodium titanate ceramics enhances the semiconductive properties of the PVA matrix. This finding highlights the potential of this material for various electronic applications, including components for solid-state batteries. [ABSTRACT FROM AUTHOR]

In this paper, we report the screening antimicrobial properties against several pathogenic microorganisms of silver tungstate microcrystals synthesized by the hydrothermal method at 120 °C for 12 h. These microcrystals were structurally characterized using the X-ray diffraction (XRD) and Rietveld refinement, where the orthorhombic structure (α-Ag 2 WO 4) with space group and point group of Pn2n and C 2 v 10 , respectively. In according, the Raman spectrum and infrared spectrum are characteristic of pure alpha phase of silver tungstate exhibiting the main characteristic bands of orthorhombic structure. Thorough UV–vis by diffuse reflectance employing the Tauc's method the obtained optical band gap (E gap) was 3.02(3) eV. While, the survey spectrum and high resolution Ag3d, O1s and W4f by X-ray photoelectron spectroscopy (XPS) are shown all biding energy peaks of characteristic elements of silver tungstate as well as, confirming the presence of Ag0 for silver nanoparticles. Several rod-like microcrystals were archived by field emission scanning electron microscopy (FE-SEM), all these, exhibiting high definition and grown of silver nanoparticles with the increase of exposure time by electrons gun. Finally, the screening antimicrobial properties of α-Ag 2 WO 4 confirm the high antimicrobial activity for main gram-positive and gram-positive bacteria with minimum inhibitory concentration (MIC) less than positive control (TIENAM). Therefore, the α-Ag 2 WO 4 microcrystals synthesized have been exhibited promissory properties in biomedical applications, particularly, in the multi-drugs gram-positive and gram-negative stains control. [Display omitted] [ABSTRACT FROM AUTHOR]