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<p>During this study, a bioactive ceramic material, hydroxyapatite (HA) was extracted from bones bio-waste. Di-molybdenum sulfide (MoS<sub>2</sub>, 50&#xa0;nm) powder was integrated with extracted HA employing a solid state reaction means. Subsequently, variable percentages (0:0, 6:2, 6:4, 6:6 and 6:8&#xa0;wt%) of HA@MoS<sub>2</sub> composite reinforced powder (CRP) were presented into a binary polymeric matrix (BPM) consisting of polyethylene oxide and sodium alginate (PEO/SA) by casting process. SEM was applied to investigate the morphology of composite films. Results showed that PEO/SA presented an ordered and homogeneous surface topography comprising micro-crack and voids. Still, the boosted distribution of CRP without accumulation within BPM affected a steady decreasing in voids and cavities. XRD declared the crystallographic characterizations, which demonstrated the semicrystalline structure of all composite films. Furthermore, the average crystallite size was improved from 8.03 to 26.82&#xa0;nm with a minimum average lattice strain of 1.89 upon decoration. The optical outcomes published an inconceivable growth in absorbance values with the surface plasmon resonance (651–644&#xa0;nm) upon the CRP loading procedure. The indirect and direct bandgaps of the as-prepared films were considerably reduced from (1.25–0.51&#xa0;eV) and from (2.66–0.84&#xa0;eV), respectively, upon the insertion of CRP, and these results approximately agree with dielectric constants. Remarkably, the dielectric features were enhanced with increasing CRP loading and frequency. The created films display potential activity toward <i>E-coli</i> (D = 2–3.3&#xa0;cm) and <i>Staphylococcus</i> (D = 2–4.1&#xa0;cm), and resulted in dissolving the bacteria within inhibition zones.</p>

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Insights into the Microstructure, Optical, Dielectric, and Biological Features of HA@MoS Reinforced PEO/SA Nanocomposite Films for Optoelectronics, Sunscreens, Energy Storage, and Bactericidal Applications

  • 期刊论文

  • 发表日期：

    2025年4月26日

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  • Zainab Jawad Kadhim,
  • Aya A. Shaher,
  • Karar Abdali,
  • N A Al-Ali,
  • Ehssan Al-Bermany,
  • Alaa Nihad Tuama

摘要

During this study, a bioactive ceramic material, hydroxyapatite (HA) was extracted from bones bio-waste. Di-molybdenum sulfide (MoS2, 50 nm) powder was integrated with extracted HA employing a solid state reaction means. Subsequently, variable percentages (0:0, 6:2, 6:4, 6:6 and 6:8 wt%) of HA@MoS2 composite reinforced powder (CRP) were presented into a binary polymeric matrix (BPM) consisting of polyethylene oxide and sodium alginate (PEO/SA) by casting process. SEM was applied to investigate the morphology of composite films. Results showed that PEO/SA presented an ordered and homogeneous surface topography comprising micro-crack and voids. Still, the boosted distribution of CRP without accumulation within BPM affected a steady decreasing in voids and cavities. XRD declared the crystallographic characterizations, which demonstrated the semicrystalline structure of all composite films. Furthermore, the average crystallite size was improved from 8.03 to 26.82 nm with a minimum average lattice strain of 1.89 upon decoration. The optical outcomes published an inconceivable growth in absorbance values with the surface plasmon resonance (651–644 nm) upon the CRP loading procedure. The indirect and direct bandgaps of the as-prepared films were considerably reduced from (1.25–0.51 eV) and from (2.66–0.84 eV), respectively, upon the insertion of CRP, and these results approximately agree with dielectric constants. Remarkably, the dielectric features were enhanced with increasing CRP loading and frequency. The created films display potential activity toward E-coli (D = 2–3.3 cm) and Staphylococcus (D = 2–4.1 cm), and resulted in dissolving the bacteria within inhibition zones.