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Microbial Corrosion01:24

Microbial Corrosion

Microbiologically Influenced Corrosion (MIC) is a significant form of material degradation caused by the metabolic activities of microorganisms. This phenomenon poses substantial challenges across various industries, including oil and gas, maritime, and water treatment sectors.MIC occurs when microorganisms, such as bacteria, archaea, and fungi, colonize metal surfaces, forming biofilms that alter the local electrochemical environment. These biofilms can lead to the production of corrosive...

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Hydroxyapatite/TiO2 Nanomaterial with Defined Microstructural and Good Antimicrobial Properties.

Miljana Mirković1, Suzana Filipović2, Ana Kalijadis1

  • 1Department of Materials, University of Belgrade, "Vinča" Institute of Nuclear Sciences-National Institute of the Republic of Serbia, 11000 Belgrade, Serbia.

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Researchers developed novel hydroxyapatite/titanium dioxide nanomaterials to combat rising bacterial infections. These low-cost materials exhibit excellent antimicrobial and photocatalytic properties, offering a promising solution for infection control.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Biomedical Engineering

Background:

  • Increased bacterial infections due to weakened immunity from global health crises.
  • Need for simple, low-cost synthesis of materials with structural and antimicrobial properties.
  • Hydroxyapatite (HAp) offers biocompatibility, while titanium dioxide (TiO2) degrades organic molecules.

Purpose of the Study:

  • To investigate three different synthesis routes for hydroxyapatite/titanium dioxide (HAp/TiO2) nanomaterials.
  • To characterize the structural, morphological, and chemical properties of the synthesized HAp/TiO2.
  • To evaluate the antimicrobial and photocatalytic efficacy of the developed nanomaterials.

Main Methods:

  • Synthesis of HAp/TiO2 nanomaterials via three distinct routes.
  • Characterization using Scanning Electron Microscopy with Energy Dispersive X-ray analysis (SEM-EDX) for morphology and composition.
  • Phase and structural analysis using X-ray Powder Diffraction (XRD); crystallite size determined (8-15 nm).
  • Fourier-transform infrared spectroscopy (FTIR) to verify material composition.

Main Results:

  • HAp/TiO2 nanomaterials were successfully synthesized with varying morphologies based on the route.
  • XRD confirmed hexagonal HAp phases and TiO2 anatase/rutile phases in all samples.
  • EDX analysis verified the presence of key elements (Ti, Ca, P, O); FTIR confirmed HAp and Ti vibrations.
  • Synthesized materials demonstrated excellent antimicrobial and photocatalytic activities.

Conclusions:

  • The study successfully produced HAp/TiO2 nanomaterials using cost-effective methods.
  • The materials possess desirable structural and chemical properties suitable for antimicrobial applications.
  • These HAp/TiO2 nanomaterials show significant potential for combating bacterial infections and degrading organic pollutants.