Synthesis of High Efficient CS/PVDC/TiO2-Au Nanocomposites for Photocatalytic Degradation of Carcinogenic Ethidium Bromide in Sunlight | ||
| Egyptian Journal of Chemistry | ||
| Article 3, Volume 63, Issue 5, May 2020, Pages 1619-1638 PDF (2.25 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejchem.2020.21987.2313 | ||
| Authors | ||
| Amr Abo El-Ella Hussein Gad1; Ahmed Youssef* 2; Hala El-Shahat Ghannam3; Abdallah F. Zedan4; Wael Mahmoud Aboulthana5; Al-Sayed Al-Sherbini6 | ||
| 1Ph.D Candidate , Department of Measurements, Photochemistry and Agriculture Applications, National Institute of Laser Enhanced Science (NILES), Cairo University, Giza, Egypt | ||
| 2National Research Centre, 30 El-Tahrir Street | ||
| 3National Institute of Oceanography and Fisheries | ||
| 4Department of Laser Applications in Metrology, Photochemistry and Agric., National Institute of Laser Enhanced Science, Cairo University, Giza, Egypt | ||
| 533 Bohouth St., P.O. 12622, Dokki, Giza, Egypt | ||
| 6Prof. of Photochemistry and Nano chemistry, Department of Measurements, Photochemistry and Agriculture Applications, National Institute of Laser Enhanced Science (NILES), Cairo University, Giza, Egypt. | ||
| Abstract | ||
| Ethidium bromide (EtBr) is one of the most broadly used dyes in molecular biology laboratories. It was considered a strong mutagenic, carcinogenic and possesses a major safety problem for the researchers and environmental hazards during the disposal process. In the current study chitosan (CS) and polyvinylidene chloride (PVDC) based on different morphologies of TiO2-Au nanocomposites were prepared, namely as CS/PVDC/TiO2-Au nanocomposites. Firstly, the titanium dioxide nanowires (TiO2-NWs, gold nanoparticles (Au-NPs) and TiO2-NWs doped by Au-NPs (TiO2-Au) were successfully fabricated and well-evaluated using X-ray diffractometer (XRD) and transmission electron microscope (TEM). Furthermore, chitosan was prepared from crabs shell wastes and blended with PVDC then different loadings of TiO2-Au nanocomposites were incorporated onto the nanocomposites films. The prepared CS/PVDC/TiO2-Au nanocomposites films were characterized using UV-Visible spectra, Fourier transforms infrared (FT-IR), XRD and TEM. Moreover, the CS/PVDC/TiO2-Au nanocomposites were used for photodecomposition of EtBr under sunlight irradiation from~ 400-600 W/m2 with and without aeration as well as assaying integrity of the EtBr after decomposition by horizontal gel electrophoresis. The results established that the CS/PVDC/TiO2-Au nanocomposites were sufficient to remove ~70-90 % of the EtBr through the irradiated time course and ~ 60 % of the dye was degraded in the first one hour. | ||
| Keywords | ||
| Chitosan; TiO2-NWs; Au-NPs; Thin-film; Ethidium Bromide; Nanocomposites; Gel Electrophoresis | ||
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