Abstract Surface enhanced Raman spectroscopy (SERS), as a powerful tool that its sensitive to detect organics hazardous pollutants and analyze the plasmon-driven catalysis reaction with its fingerprint characteristics. And the SERS property of substrate can be effectively enhanced with charge-transferring between the substrate and analyte by utilizing the borrowing SERS activity strategy. Considering the transition metal elements represent multiple valence states, the synergistic interaction of noble metal/transition metal oxides heterostructures can be further modulated with oxygen contents variation of transition metal oxides. In this work, we report the fabrication of high specific area Sn3O4 hollow hierarchical nanostructures with a simple hydrothermal method, which have mixed-valence of Sn2+ and Sn4+. And the composites were prepared with Au coating and the SERS properties of the nanostructures were investigated by detection of rhodamine 6G. The effect of the oxygen content of the transition metal oxides on their SERS performance was analyzed with annealing process. It was found that a high oxygen atomic ratio induced by heat treatment increased the SERS effect of the Au-coated nanostructures for R6G molecules. This property may prove to be very useful in the future research on the borrowing SERS activity of composites of noble metals and metal oxides.

中文翻译：

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氧含量对氧化锡/贵金属复合材料借用SERS活性的影响

摘要 表面增强拉曼光谱（SERS）作为一种强大的工具，可以灵敏地检测有机有害污染物，并以其指纹特征分析等离子体驱动的催化反应。利用借用SERS活性策略，通过底物与分析物之间的电荷转移，可以有效增强底物的SERS性能。考虑到过渡金属元素代表多价态，贵金属/过渡金属氧化物异质结构的协同相互作用可以通过过渡金属氧化物的氧含量变化进一步调节。在这项工作中，我们报告了用简单的水热法制造高比面积 Sn3O4 中空分级纳米结构，其具有 Sn2+ 和 Sn4+ 的混合价态。并制备了Au涂层的复合材料，并通过检测罗丹明6G来研究纳米结构的SERS性能。通过退火工艺分析了过渡金属氧化物的氧含量对其SERS性能的影响。发现热处理引起的高氧原子比增加了 Au 涂层纳米结构对 R6G 分子的 SERS 效应。这一特性可能在未来对贵金属和金属氧化物复合材料的借用 SERS 活性的研究中非常有用。发现热处理引起的高氧原子比增加了 Au 涂层纳米结构对 R6G 分子的 SERS 效应。这一特性可能在未来对贵金属和金属氧化物复合材料的借用 SERS 活性的研究中非常有用。发现热处理引起的高氧原子比增加了 Au 涂层纳米结构对 R6G 分子的 SERS 效应。这一特性可能在未来对贵金属和金属氧化物复合材料的借用 SERS 活性的研究中非常有用。