Graphene oxide-Ag nanoparticles-pyramidal silicon hybrid system for homogeneous, long-term stable and sensitive SERS activity

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• 作者：Jia Guo^a ; Shicai Xu^b ; Xiaoyun Liu^a ; Zhe Li^a ; Litao Hu^a ; Zhen Li^a ; Peixi Chen^a ; Yong Ma^a ; Shouzhen Jiang^a ; ^c ; ^{jiang_sz@126.com} ; Tingyin Ning^a ; ^c
• 关键词：Graphene oxide ; Surface-enhanced Raman scattering ; Molecule detection ; Homogeneity ; Stability ; Practical applications
• 刊名：Applied Surface Science
• 出版年：2017
• 出版时间：28 February 2017
• 年：2017
• 卷：396
• 期：Complete
• 页码：1130-1137
• 全文大小：4895 K
• 卷排序：396

文摘

We directly grown AgNPs on substrate by annealing method in the quartz tube. Compare with spin-coating Ag nanoparticles solution method, we got more uniform distribution of AgNPs and the AgNPs better adsorption on the substrate. We use a simple and lost-cost method to obtain the pyramidal silicon (PSi). The PSi possessing well-separated pyramid arrays can make contribution to the homogeneity and sensitivity of the substrate. In our work, graphene oxide (GO) film is uniformly deposited on AgNPs and PSi by using a spin-coating method. The GO films endow the hybrid system a good stability and enhance the homogeneity and sensitivity of the substrate.