具有可调能带结构的等离子掺杂钼的 HNb3O8 纳米片在全日光光谱下用于光热催化 H2 演化

IF 10.7 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Journal of Materials Chemistry A Pub Date : 2024-11-07 DOI:10.1039/d4ta06164k

Junli Chen, Xinyi Jin, Xinli Yang, Lei Deng, Zhiqiang Zhang, Li Feng Han, Feilong Gong, Yonghui Zhang

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引用次数: 0

摘要

通过简单的水热法合成了超薄的 Mo-HNb3O8 纳米片。在原始的 HNb3O8 纳米片中引入低价态的钼和氧空位，可调节其能带结构并诱导局域表面等离子体共振（LSPR），这不仅能有效促进光生载流子的分离和转移，还能提高光热催化氢气进化中太阳能在所有太阳光谱下的高利用率。优化后的 MoNb-10 表现出最高的氢气进化率（220.4 μmol h-1 g-1），约为 HNb3O8 纳米片的 7.7 倍。目前的工作不仅加深了我们对过渡金属氧化物纳米片表面掺杂的 Mo 和 OV 所产生的 LSPR 效应的理解，还为探索新的光热催化剂提供了线索，从而促进未来的太阳能转换。

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Plasmonic Mo-doped HNb3O8 nanosheets with tunable energy band structures for photothermal catalytic H2 evolution in Full Solar Spectrum

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), 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 all solar spectrum. The optimized MoNb-10 exhibits the highest H2 evolution rate (220.4 μmol h-1 g-1), which is approximate 7.7 times higher than that of the HNb3O8 nanosheet. The current work not only deepens our understanding LSPR effects generated from the Mo dopant and OVs on the surface of transition metal oxide nanosheets, also provides clues for exploring new photothermal catalyst to promote future solar energy conversion.

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来源期刊

Journal of Materials Chemistry A CHEMISTRY, PHYSICAL-ENERGY & FUELS

CiteScore

19.50

自引率

5.00%

发文量

1892

审稿时长

1.5 months

期刊介绍： The Journal of Materials Chemistry A, B & C covers a wide range of high-quality studies in the field of materials chemistry, with each section focusing on specific applications of the materials studied. Journal of Materials Chemistry A emphasizes applications in energy and sustainability, including topics such as artificial photosynthesis, batteries, and fuel cells. Journal of Materials Chemistry B focuses on applications in biology and medicine, while Journal of Materials Chemistry C covers applications in optical, magnetic, and electronic devices. Example topic areas within the scope of Journal of Materials Chemistry A include catalysis, green/sustainable materials, sensors, and water treatment, among others.