Plasmonic Molybdenum Dioxide Ultrathin Nanowire Bundles for Highly Sensitive, Stable, and Reproducible Surface-Enhanced Raman Spectroscopy,The Journal of Physical Chemistry C

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Plasmonic Molybdenum Dioxide Ultrathin Nanowire Bundles for Highly Sensitive, Stable, and Reproducible Surface-Enhanced Raman Spectroscopy
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2023-03-28 , DOI: 10.1021/acs.jpcc.3c01221
Lu Zhang _{1,

2} , Guoying Wei ₁ , Junfang Li ₂ , Meng Yin ₂ , Guangcheng Xi ₂

Affiliation

In surface-enhanced Raman spectroscopy (SERS) detection, it is important to improve the sensitivity, stability, and reproducibility of semiconductor surface-enhanced Raman scattering (SERS) substrates. Here, a simple chemical method was used to synthesize molybdenum dioxide ultrathin nanowire bundles. The ultrathin nanowire bundles of molybdenum dioxide demonstrate distinct and robust surface plasmon resonance (SPR) effects within the visible light range. As a low-cost SERS substrate, the plasmonic molybdenum dioxide nanowire beams exhibit a Raman enhancement factor of 2.9 × 10⁷ and a minimum detection limit of 1.0 × 10^–11 mol L^–1 for Rhodamine 6G. In addition, these SERS substrates based on molybdenum dioxide ultrathin nanowires exhibit good chemical stability and can resist corrosion by strong acids and bases over time. The molybdenum dioxide ultrathin nanowire bundles have a high potential to become an ideal metal-oxide-based SERS substrate material.

中文翻译：

用于高灵敏度、稳定和可重现的表面增强拉曼光谱的等离子体二氧化钼超薄纳米线束

在表面增强拉曼光谱（SERS）检测中，提高半导体表面增强拉曼散射（SERS）衬底的灵敏度、稳定性和重现性具有重要意义。在这里，使用简单的化学方法合成二氧化钼超细纳米线束。二氧化钼的超细纳米线束在可见光范围内表现出明显而强大的表面等离子体共振 (SPR) 效应。作为低成本的 SERS 衬底，等离子体二氧化钼纳米线束表现出 2.9 × 10 ^{7的拉曼增强因子和 1.0 × 10}^–11 mol L ^–1的最小检测限对于罗丹明 6G。此外，这些基于二氧化钼超细纳米线的SERS基底表现出良好的化学稳定性，可以抵抗强酸和强碱的长期腐蚀。二氧化钼超细纳米线束具有成为理想的金属氧化物基SERS衬底材料的巨大潜力。

更新日期：2023-03-28

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