The hot electron transition of noble materials to catalysis accelerated by localized surface plasmon resonances (LSPRs) was detected by in situ irradiated X-ray photoelectron spectroscopy (ISI-XPS) in this article. This paper synthesized an Ag Nanowire (AgNW) @ WS₂ core-shell structure, with an ultra-thin shell of WS₂ (3 ∼ 7 nm), and characterized its photocatalytic properties. The AgNW@WS₂ core-shell structure exhibited different surface-enhanced Raman spectroscopy (SERS) effects by changing shell thickness, indicating that the effect of AgNW could be controlled by WS₂ shell. Furthermore, the hydrogen production of AgNW@WS₂ could reach to 356% of that of pure WS₂. The hot electrons arising from the LSPRs effect broke through the Schottky barrier between WS₂ and AgNW and transferred to the WS₂ shell, whose photocatalytic effect was thus enhanced. In addition, when the LSPRs effect was intensified by reducing the shell thickness, the hot electron transition of noble materials to catalysis was accelerated.

本文通过原位辐照X射线光电子能谱（ISI-XPS）检测了贵金属的热电子跃迁，并通过局部表面等离子体激元共振（LSPRs）加速了催化作用。本文合成的银纳米线（的AgNW）@ WS ₂芯-壳结构，具有一个超薄的WS壳₂（3〜7纳米），和其特征在于它的光催化性能。通过改变壳的厚度，AgNW @ WS ₂的核壳结构表现出不同的表面增强拉曼光谱（SERS）效应，表明AgNW的作用可以由WS ₂壳控制。此外，AgNW @ WS ₂的制氢量可以达到纯WS _2的356％。由LSPRs效应产生的热电子突破了WS ₂和AgNW之间的肖特基势垒，并转移到WS ₂壳层，从而增强了其光催化作用。此外，当通过减小壳厚度来增强LSPRs效应时，贵金属的热电子跃迁加速了催化作用。