کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7709010 | 1497327 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Co-sensitization of TiO2 electrode with Eosin Y dye and carbon dots for photoelectrochemical water splitting: The enhanced dye adsorption and the charge transfer route
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
According to a stepwise adsorption approach, TiO2 NT photoanode was co-sensitized with Eosin Y and carbon dots for photoelectrochemical water splitting. The adsorption amount of Eosin Y in co-sensitized samples increases due to the presence of carbon dots regardless of co-sensitization sequence. The absorbance of Eosin Y/carbon dots/TiO2 NT in visible light region is stronger than that of carbon dots/Eosin Y/TiO2 NT, while carbon dots/Eosin Y/TiO2 NT exhibits higher photocurrent density and hydrogen production rate. Based on the shortest electron transport time, the electron diffusion coefficient in carbon dots/Eosin Y/TiO2 NT electrode is up to 14.94Â ÃÂ 10â19cm2sâ1. A favorable energy levels alignment dominates in carbon dots/Eosin Y/TiO2 NT, which can further account for enhancement in charge transfer.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 50, 14 December 2017, Pages 29686-29693
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 50, 14 December 2017, Pages 29686-29693
نویسندگان
Lixia Sang, Lei Lei, Jia Lin, Hao Ge,