کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
59799 1419425 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Kinetics and mechanism of thymine degradation by TiO2 photocatalysis
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Kinetics and mechanism of thymine degradation by TiO2 photocatalysis
چکیده انگلیسی

The advanced oxidation processes were examined toward the degradation of thymine (C5H6N2O2), a type of nucleic acid from the pyrimidine family. As observed, the photodegradation of thymine over TiO2 photocatalyst was rapid and significant in aqueous solution under UV irradiation. Different parameters were studied, including the adsorption of thymine onto TiO2 photocatalyst, the kinetics of degradation, and the effect of pH on the photocatalytic properties of thymine degradation. Additionally, the mineralization of the products obtained upon thymine photodegradation was studied. The disappearance and mineralization rates of thymine during the photocatalytic process were also compared and discussed. The mineralization of nitrogen was also investigated, and the identification of the intermediate products was established. Finally, electronic density calculations were used to propose possible chemical pathways for the photodegradation of thymine over TiO2 photocatalyst under UV irradiation.

Graphical AbstractA degradation mechanism is proposed for the mineralization of thymine using TiO2. The organic molecules and acids formed upon degradation are predominantly photoconverted into CO2 and H2O.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chinese Journal of Catalysis - Volume 36, Issue 11, November 2015, Pages 1818–1824
نویسندگان
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