Layered double hydroxides decorated graphic carbon nitride film as efficient photoanodes for photoelectrochemical water splitting
| Autor: | Songtao Zhang, Xianguang Meng, Jianping He, Tao Wang, Xianli Huang, Yunxia Guo, Hao Gong, Xiaoli Fan, Xinxiang Xie, Bin Gao |
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| Rok vydání: | 2019 |
| Předmět: |
Photocurrent
Materials science Layered double hydroxides 02 engineering and technology General Chemistry Substrate (electronics) engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Catalysis 0104 chemical sciences law.invention chemistry.chemical_compound chemistry Chemical engineering law engineering Water splitting Calcination 0210 nano-technology Carbon nitride Layer (electronics) |
| Zdroj: | Catalysis Today. 335:423-428 |
| ISSN: | 0920-5861 |
| DOI: | 10.1016/j.cattod.2019.01.034 |
| Popis: | In the present work, we investigate the graphic carbon nitride (g-CN) film as photoanode to catalyze the photoelectrochemical (PEC) water oxidation and study the influence of NiCo layered double hydroxides (NiCo-LDH) layer on the performance. The g-CN film with good quality and intimate contact with substrate was in-situ prepared via solvothermal process and subsequent calcination. NiCo-LDH is further decorated on the g-CN film through cathodic electrochemical deposition to work as co-catalyst. The g-CN/NiCo-LDH composite with optimized NiCo-LDH loading amount exhibits a photocurrent of 11.8 μA cm−2 at 0.6 V vs. SCE, which is 2.8 times of bare g-CN. Characterizations and performance tests demonstrate that NiCo-LDH promoted reaction kinetics and charge separation. The results provide an effective strategy to improve the photoelectrochemical water oxidation performance of g-CN through NiCo-LDH co-catalyst. This work to investigate the photoelectrochemical water oxidation is of great significance toward explore the overall water splitting on the g-CN film. |
| Databáze: | OpenAIRE |
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