Synthesis and Characterization of TiO2 Nanotubes (TiO2-NTs) Decorated with Platine Nanoparticles (Pt-NPs): Photocatalytic Performance for Simultaneous Removal of Microorganisms and Volatile Organic Compounds.
Lotfi KhezamiImen LounissiAnouar HajjajiAhlem GuesmiAymen Amine AssadiBrahim BessaisPublished in: Materials (Basel, Switzerland) (2021)
This work reports on the effect of TiO2 nanotubes (TiO2-NTs), decorated wih platinum nanoparticles (Pt-NPs), on the removal of bacteria and volatile organic compounds (VOCs). The Pt-NPs were loaded onto the TiO2-NTs using the electrodeposition method at four decoration times (100, 200, 300, and 600 s). The realized Pt-NPs/TiO2-NTs nanocomposites were used for the degradation of cyclohexane, a highly toxic and carcinogenic VOC pollutant in the chemical industry. The achieved Pt-NPs/TiO2-NTs nanocomposites were characterized using X-ray diffraction (XRD), photoluminescence (PL), diffuse reflectance spectroscopy (UV-Vis), and scanning (SEM) and transmission (TEM) electron microscopy. To understand the photocatalytic and antibacterial behavior of the Pt-NPs/TiO2-NTs, simultaneous treatment of Escherichia coli and cyclohexane was conducted while varying the catalyst time decoration. We noticed a complete bacterial inactivation rate with 90% VOC removal within 60 min of visible light irradiation. Moreover, the Langmuir-Hinshelwood model correlated well with the experimental results of the photocatalytic treatment of indoor air.
Keyphrases
- visible light
- electron microscopy
- escherichia coli
- high resolution
- quantum dots
- oxide nanoparticles
- radiation therapy
- magnetic resonance imaging
- reduced graphene oxide
- air pollution
- mass spectrometry
- staphylococcus aureus
- pseudomonas aeruginosa
- multidrug resistant
- cystic fibrosis
- risk assessment
- replacement therapy
- ionic liquid
- computed tomography
- smoking cessation
- silver nanoparticles
- heavy metals
- highly efficient
- candida albicans
- room temperature