Abstract
Photocatalytic degradation of a composite film made of PVC and Fe-doped ZnO nanoparticles under both UV and sunlight have been accomplished and compared. The metal-doped semiconductor nanoparticles were previously synthesized using ultrasound. The nanoparticles had average crystal size of 33.67 nm and a bandgap of 2.69 eV. Catalysts loading were varied. Composite film with 0.033 g Fe-ZnO per g PVC was found to be the optimum with respect to degradation and mechanical properties. Degradation was monitored by loss in weight. Under sunlight 12% degradation could be achieved with the composite film in 210 min whereas under UV light the degradation was 10%. For pure PVC film, the corresponding degradations were 4.2 and 4.84% respectively. A plausible mechanism has been suggested and validated with experimental results which fitted the proposed model satisfactorily.
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Acknowledgement
The authors are grateful to the Department of Science and Technology, Government of India and TEQIP, phase-II, University of Calcutta for providing stipends to PD and AR. Authors are also grateful to Prof. Saikat Maitra (Principal, Government College of Enginering and Ceramic Technology) for clarifying material science issues; Prof. S. K. Ray (HOD, Dept. of Polymer Science and Technology, University of Calcutta) for FTIR; Prof. D. Chattopadhyay (Dept. of Polymer Science and Technology, University of Calcutta) for XRD; Mr. P. Banerjee (WBPCB) for his advice regarding nano-particle synthesis and characterization; CRNN for FESEM, SEM and EDAX and Mr. A. K. Bhattacharya (M. Tech., Chemical Engg.) for helping in the experiments.
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Das, P., Roy, A. & Chakrabarti, S. Photocatalytic Degradation of the Nanocomposite Film Comprising Polyvinyl Chloride (PVC) and Sonochemically Synthesized Iron-Doped Zinc Oxide: A Comparative Study of Performances Between Sunlight and UV Radiation. J Polym Environ 25, 1231–1241 (2017). https://doi.org/10.1007/s10924-016-0894-0
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DOI: https://doi.org/10.1007/s10924-016-0894-0