Promising photocatalytic films are more viable for practical solar‐driven hydrogen (H₂) evolution, which remains scarcely explored so far. Herein, a series of PtSe₂ thin films are synthesized through thermal evaporation of Pt onto commercial fluorine‐doped tin oxide (FTO) substrates, followed by direct selenization through chemical vapor deposition (CVD). It is found that the optimized PtSe₂/FTO film exhibits an outstanding hydrogen evolution reaction (HER) rate of 506 mmol h⁻¹ m⁻², which is far higher than that of blank FTO and PtSe₂/Si films, and even sevenfold higher than that of the Pt/FTO film (68 mmol h⁻¹ m⁻²). Surprisingly, the HER activity of the PtSe₂/FTO film has no decay after 15 recycling runs, aging for 1 year, and an additional eight recycling runs. The excellent HER activity and ultrastability of the PtSe₂/FTO film is further investigated by electronic/spectroscopic characterizations. All results show that the PtSe₂/FTO film has the potential to be a viable photocatalyst for solar‐driven H₂ production.

中文翻译：

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高效，极稳定的光催化PtSe2 / FTO薄膜用于水分解

有前景的光催化膜更适合用于实际的太阳驱动的氢（H ₂）逸出，到目前为止，仍很少进行探索。在此，通过将Pt热蒸发到商用的掺氟氧化锡（FTO）衬底上，然后通过化学气相沉积（CVD）直接硒化，来合成一系列PtSe ₂薄膜。发现优化的PtSe ₂ / FTO薄膜具有出色的析氢反应（HER）速率，为506 mmol h ^-1  m ^-2，远高于空白的FTO和PtSe ₂ / Si薄膜，甚至高出七倍。高于Pt / FTO膜（68 mmol h ^-1  m ^-2）。出人意料的是，PtSe ₂ / FTO膜的HER活性在15次循环运行，老化1年以及另外8次循环运行后没有衰减。通过电子/光谱表征进一步研究了PtSe ₂ / FTO膜的优异HER活性和超稳定性。所有结果表明，PtSe ₂ / FTO薄膜具有成为太阳能驱动H ₂生产的可行光催化剂的潜力。