Ultrathin Mo-HNb₃O₈ nanosheets were synthesized by a facile hydrothermal process. Introducing low-valence Mo and oxygen vacancies into the pristine HNb₃O₈ nanosheets can modulate the band structure and induce the localized surface plasmon resonance (LSPR) to increase the charge-carrier densities and produce hot carriers derived from the non-radiative decay of LSPR, which not only efficiently promotes the separation and transfer of photo-generated carriers, but also improves the high utilization rate of solar energy in photothermal catalytic hydrogen evolution in the full solar spectrum. The optimized MoNb-10 exhibits the highest H₂ evolution rate (220.4 μmol h⁻¹ g⁻¹), which is approximately 7.7 times higher than that of the HNb₃O₈ nanosheet. The current work not only deepens our understanding of LSPR effects generated from the Mo dopant and OVs on the surface of transition metal oxide nanosheets, but also provides clues for exploring new photothermal catalysts to promote future solar energy conversion.

中文翻译：

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具有可调谐能带结构的等离子体 Mo 掺杂 HNb3O8 纳米片用于全太阳光谱中的光热催化 H2 析出


超薄 Mo-HNb₃O₈ 纳米片是通过简单的水热工艺合成的。在原始 HNb₃O₈ 纳米片中引入低价 Mo 和氧空位可以调节能带结构并诱导局域表面等离子体共振 （LSPR），从而提高电荷载流子密度并产生源自 LSPR 非辐射衰变的热载流子，不仅有效地促进了光生载流子的分离和转移，而且提高了太阳能的高利用率。全太阳光谱中的光热催化析氢。优化的 MoNb-10 表现出最高的 H₂ 析出速率 （220.4 μmol ^{h-1 g-1}），大约是 HNb₃O₈ 纳米片的 7.7 倍。目前的工作不仅加深了我们对 Mo 掺杂剂和 OVs 在过渡金属氧化物纳米片表面产生的 LSPR 效应的理解，而且为探索新的光热催化剂以促进未来的太阳能转换提供了线索。