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Photocatalytic degradation of polyhydroxybutyrate films using titanium dioxide nanoparticles as a photocatalyst |
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| Authors: | Hussain Zainab El-Hiti Gamal A Ahmed Ahmed Altaee Nadia Yousif Emad |
| Institution: | 1.Department of Chemistry, College of Science, Misan University, Misan, 62001, Iraq ;2.Cornea Research Chair, Department of Optometry, College of Applied Medical Sciences, King Saud University, P.O. Box 10219, Riyadh, 11433, Saudi Arabia ;3.Polymer Research Unit, College of Science, Al-Mustansiriyah University, Bagdad, Iraq ;4.Department of Horticulture and Garden Engineering, College of Agriculture, Al-Qasim Green University, 51002, Babil, Iraq ;5.Department of Chemistry, College of Science, Al-Nahrain University, Baghdad, 64021, Iraq ; |
| Abstract: | Photocatalytic degradation of polyhydroxybutyrate (PHB) polymeric films (30 μm thickness) containing different concentrations of titanium dioxide (TiO2) nanoparticles under ultraviolet (UV) irradiation (λmax = 313 nm) has been studied. The activity of TiO2 (0.001-0.005%) as a photocatalyst was determined by monitoring various functional group indices, weight loss in polymeric films and photodegradation rate constant (k d) with irradiation time. Photodegradation was found to be highly dependent on the TiO2 nanoparticles concentration and the UV irradiation time. The rate of PHB sample photodegradation was highest when the concentration of TiO2 was 0.005% (by weight) and lowest when its concentration was 0.001%. |
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