https://scholars.lib.ntu.edu.tw/handle/123456789/628178
Title: | CoSe2 Embedded in C3N4: An Efficient Photocathode for Photoelectrochemical Water Splitting | Authors: | Basu, Mrinmoyee Zhang, Zhi-Wei CHIH-JUNG CHEN Lu, Tzu-Hsiang Hu, Shu-Fen Liu, Ru-Shi |
Keywords: | C3N4−CoSe2; heterostructure; hydrogen evolution; nanorod; photocathode | Issue Date: | 12-Oct-2016 | Publisher: | AMER CHEMICAL SOC | Journal Volume: | 8 | Journal Issue: | 40 | Start page/Pages: | 26690 | Source: | ACS applied materials & interfaces | Abstract: | An efficient H2 evolution catalyst is developed by grafting CoSe2 nanorods into C3N4 nanosheets. The as-obtained C3N4-CoSe2 heterostructure can show excellent performance in H2 evolution with outstanding durability. To generate phatocathode for photoelectrochemical water splitting CoSe2 grafted in C3N4 was decorated on the top of p-Si microwires (MWs). p-Si/C3N4-CoSe2 heterostructure can work as an efficient photocathode material for solar H2 production in PEC water splitting. In 0.5 M H2SO4, p-Si/C3N4-CoSe2 can afford photocurrent density -4.89 mA/cm2 at "0" V vs RHE and it can efficiently work for 3.5 h under visible light. Superior activity of C3N4-CoSe2 compared to CoSe2 toward H2 evolution is explained with the help of impedance spectroscopy. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/628178 | ISSN: | 1944-8244 | DOI: | 10.1021/acsami.6b06520 |
Appears in Collections: | 重點科技研究學院 |
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