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以多孔α-Fe_2O3作为固相载体,通过水热合成法在α-Fe_2O3孔道内沉积银纳米粒子。测试4种不同硝酸银用量时Fe_2O3-Ag复合物的表面增强Raman散射光谱性能(SERS)。利用扫描电子显微镜、透射电子显微镜、X射线衍射和N2吸附等表征手段对Fe_2O3-Ag复合物结构及组成进行分析表征。结果表明,当银纳米粒子的负载量为6.5%时(质量分数),Fe_2O3-Ag纳米复合物的比表面积为26.57 m2/g,增强因子可以达到102～103,SERS活性最好。所制备的Fe_2O3-Ag纳米复合物具有良好的SERS活性和吸附性能,可以进一步应用于其他待测物的吸附检测。
Abstract：The porous α-Fe_2O3 was used as solid support, and silver nanoparticles were integrating into the pore of α-Fe_2O3 through hydrothermal synthesis. Four different amounts of AgNO3 were added into the growth media for optimizing the surface-enhanced Raman scattering(SERS) performance of Fe_2O3-Ag. The structure and component of the Fe_2O3-Ag nanocomposites were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and N2 adsorption. The experimental results show that the BET surface area and enhancement factor of the Fe_2O3-Ag nanocomposite are 26.57 m2/g and 102–103 respectively, when the dosage of AgNO3 is 6.5%(in mass), exhibiting the best SERS enhancement. The Fe_2O3-Ag nanocomposite provides not only the SERS enhancement but also a good adsorption performance, which could be further used for absorption and detection of various samples.
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基本信息:
DOI：10.14062/j.issn.0454-5648.20190325
中图分类号:O657.37;TB33
引用信息:
[1]付紫微,逯夏平,喻倩,等.多孔Fe_2O_3-Ag纳米复合材料的制备及其在表面增强Raman散射光谱中应用[J].硅酸盐学报,2020,48(04):477-482.DOI:10.14062/j.issn.0454-5648.20190325.
基金信息:
国家自然科学基金面上项目(21671092);; 辽宁省自然科学基金指导计划项目(20180550246);; 辽宁省“兴辽英才计划”项目(XLYC1802057)
2019-12-25
2019-12-25
2019-12-25