Highly Dispersed and Small-Sized Nickel(II) Hydroxide Co-Catalyst Prepared by Photodeposition for Hydrogen Production
| Autor: | Na Zhao, Dandan Li, Feiyan Zhang, Yan Wang, Pingping Jiang, Huizhen Zhang, Guang-Li Wang, Ji Li, Jinze Lyu, Yuming Dong, Yongfa Zhu |
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| Rok vydání: | 2019 |
| Předmět: |
010405 organic chemistry
Chemistry Organic Chemistry Nickel(II) hydroxide chemistry.chemical_element General Chemistry 010402 general chemistry 01 natural sciences Biochemistry 0104 chemical sciences Catalysis Metal chemistry.chemical_compound Nickel Chemical engineering visual_art Photocatalysis visual_art.visual_art_medium Water splitting Dispersion (chemistry) Hydrogen production |
| Zdroj: | Chemistry, an Asian journal. 14(23) |
| ISSN: | 1861-471X |
| Popis: | Photodeposition has been widely used as a mild and efficient synthetic method to deposit co-catalysts. It is also worth studying how to synthesize non-noble metal photocatalysts with uniform dispersion. Different synthetic conditions in photodeposition have a certain influence on particle size distribution and photocatalytic activity. Therefore, we designed experiments to prepare the inexpensive composite photocatalyst Ni(OH)2 /g-C3 N4 by photodeposition. The Ni(OH)2 co-catalysts disperse uniformly with particle sizes of about 10 nm. The photocatalytic hydrogen production rate of Ni(OH)2 /g-C3 N4 reached about 19 mmol g-1 h-1 , with the Ni(OH)2 deposition amount about 1.57 %. During 16 h stability testing, the rate of hydrogen production did not decrease significantly. The composite catalyst also revealed a good hydrogen production performance under sunlight. The Ni(OH)2 co-catalyst enhanced the separation ability of photogenerated carriers, which was proved by surface photovoltage and fluorescence analysis. |
| Databáze: | OpenAIRE |
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