کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7706052 | 1497305 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhanced photoelectrochemical hydrogen evolution at p-type CuBi2O4 photocathode through hypoxic calcination
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Enhanced photoelectrochemical hydrogen evolution at p-type CuBi2O4 photocathode through hypoxic calcination Enhanced photoelectrochemical hydrogen evolution at p-type CuBi2O4 photocathode through hypoxic calcination](/preview/png/7706052.png)
چکیده انگلیسی
Uniform p-type CuBi2O4 thin film was prepared through a spin coating method on fluorine-doped tin oxide (FTO) coated glass substrate, with a subsequent hypoxic post-annealing process under semi-sealed condition to enhance its photoelectrochemical efficiency for hydrogen evolution reaction. Compared to CuBi2O4 specimen annealed in open-air environment, the semi-sealed annealed CuBi2O4 photocathode presents a remarkable improvement in cathodic photocurrent, from 0.42Â mA/cm2 to 0.7Â mA/cm2 at 0.25 VRHE. X-ray photoelectron spectroscopy study revealed that the electronic structure of CuBi2O4 film was significantly modified during the post-annealing process and higher carrier concentration was obtained through Mott-Schottky measurement on semi-annealed CuBi2O4. We also demonstrate that the synthesized CuBi2O4 film with a thin overlayer of sputtered TiO2 can retain good stability and efficiency as a photocathode. This work provides insights into the mechanism of the high efficiency CuBi2O4 photocathode achieved from the unique post-annealing treatment.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 20, 17 May 2018, Pages 9549-9557
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 20, 17 May 2018, Pages 9549-9557
نویسندگان
Jie Yang, Chun Du, Yanwei Wen, Zijing Zhang, Kyeongjae Cho, Rong Chen, Bin Shan,