Enhanced photobactericidal activity of ZnO nanorods modified by meso-tetrakis(4-sulfonatophenyl)porphyrin under visible LED lamp irradiation

• Published in: Water science and technology Vol. 71; no. 8; pp. 1249 - 1254
• Main Authors: Rahimi, Rahmatollah, Shokraiyan, Javad, Rabbani, Mahboubeh, Fayyaz, Fatemeh
• Format: Journal Article
• Language: English
• Published: England IWA Publishing 01-01-2015
• Subjects: Analytical methods; Bacteria - drug effects; Bacteria - radiation effects; Disinfection - methods; E coli; Electron microscopy; Escherichia coli; Ethanol; Fourier transforms; Glass substrates; Infrared radiation; Infrared spectra; Infrared spectroscopy; Irradiation; Light; Light emitting diodes; Microscopy, Electron, Scanning; Nanorods; Nanotubes - chemistry; Pathogens; Photocatalysis; Photovoltaic cells; Porphyrins; Porphyrins - chemistry; Radio frequency plasma; Reflectance; Scanning electron microscopy; Semiconductors; Spectroscopy, Fourier Transform Infrared; Sun; Synthesis; Waste Disposal, Fluid; Waste Water - microbiology; X-Ray Diffraction; Zinc; Zinc oxide; Zinc Oxide - chemistry; Zinc oxides; Japan
• ISSN: 0273-1223; 1996-9732
• DOI: 10.2166/wst.2015.098

In this study, zinc oxide (ZnO) nanorods have been synthesized using a simple template-free precipitation technique and deposited on glass substrate. The meso-tetrakis(4-sulfonatophenyl)porphyrin (TPPS) has been synthesized and then immobilized on the surface of ZnO nanorods to prepare an organic/inorganic composite. The samples were characterized by various techniques such as X-ray diffraction, diffuse reflectance spectra, Fourier transform-infrared spectroscopy and scanning electron microscopy. In addition, the photobactericidal activity of TPPS/ZnO composite, TPPS and ZnO nanorods was tested against the pathogenic bacterium of Escherichia coli under visible LED lamp irradiation. The results indicate that the photobactericidal activity of TPPS-loaded ZnO nanorods was better than TPPS or ZnO nanorods, separately.