| 论文简介 |
Photocatalytic water splitting for hydrogen production is more sustainable than traditional desalination and electrocatalysis because of avoiding electrode corrosion and other problems. Two-dimensional perovskite oxide materials have multiple characteristics, such as ferroelectric, piezoelectric, and pyroelectric properties, demonstrating good light response and chemical stability, which provides a broad prospect in photo-chemical conversion. In this study, acidified La2NiO4 can greatly improve the amount of hydrogen evolution by coupling its piezocatalysis and photocatalysis. Under the full-spectrum illumination assisted with ultrasonic vibration in seawater, a recordable hydrogen production activity of 1315.44 μmol·g−1·h−1 was obtained in acidified La2NiO4 by 0.006 mol/L HCl, which is more than 200 times higher than that of pure La2NiO4 (6.89 μmol k·g−1·h−1) in methanol solution. It is found that the significant hydrogen production of La2NiO4 samples treated with acidification lies in the fast separation of charge carriers in comparison with those without acidification... |
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