NayWO3–x Nanosheet Array via In Situ Na Intercalation for Surface-Enhanced Raman Scattering Detection of Methylene Blue
NayWO3–x Nanosheet Array via In Situ Na Intercalation for Surface-Enhanced Raman Scattering Detection of Methylene Blue
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DOI：
10.1021/acsanm.2c00862
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发表时间：
2022-06
影响因子：
5.9
通讯作者：
Zihui Tang;Dongran Wang;Bin Chen;Dexian Huo;Yao Zhang;Xiujuan Wang;Haibin Tang;G. Meng
中科院分区：
文献类型：
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作者：
Zihui Tang;Dongran Wang;Bin Chen;Dexian Huo;Yao Zhang;Xiujuan Wang;Haibin Tang;G. Meng
非金属等离子体激元半导体显示出有前途的表面等离子体激元特性，具有丰富、低成本以及合成和调谐灵活性等优点。然而，迫切需要探索用于改善等离子体激元效应的半导体材料。本文采用原位插层法在玻璃衬底上制备了等离子体贫氧钠钨青铜纳米片阵列NayWO 3-x。NayWO 3-xnanosheet阵列表现出可见的局部表面等离子体共振带，中心在558 nm，据我们所知，这是钠钨青铜的最蓝吸收峰。基于这种独特的表面等离子体激元特性，NayWO 3-x纳米片阵列表现出良好的表面增强拉曼散射（Sers）效应，对亚甲基蓝的检测限达到10- 7 M。此外，作为Sers基底，NayWO 3-x纳米片阵列不仅保证了Sers信号的高稳定性，而且操作简单易行。因此，具有低成本和容易获得的等离子体贫氧NayWO 3-x纳米片阵列在光捕获和光电子器件以及传感器件中显示出巨大的应用潜力。
Nonmetal plasmonic semiconductors have shown promising surface plasmon properties with advantages including abundance, low cost, and flexibility in synthesis and tuning. However, it is urgently desired to explore semiconductor materials for improving the plasmonic effect. Herein, a plasmonic oxygen-deficient sodium tungsten bronze NayWO3–xnanosheet array has been facilely achieved on the glass substrate byin situNa intercalation, followed by hydrogen reduction. The NayWO3–xnanosheet array manifested a visible localized surface plasmon resonance band centered at 558 nm, which, to the best of our knowledge, was the bluest absorption peak for sodium tungsten bronze. Based on this unique surface plasmon property, the NayWO3–xnanosheet array exhibited a good surface-enhanced Raman scattering (SERS) effect, and a detection limit of 10–7M for methylene blue was achieved. In addition, as a SERS substrate, the NayWO3–xnanosheet arrays not only guaranteed high SERS signal stability but also had a much easier and facile operation. Therefore, the plasmonic oxygen-deficient NayWO3–xnanosheet array with low cost and easy availability shows great potential for applications in light harvesting and optoelectronic devices in addition to sensing devices.