3D Fe3O4@Au@Ag nanoflowers assembled magnetoplasmonic chains for in situ SERS monitoring of plasmon-assisted catalytic reactions. Issue 22 (20th May 2016)

• Record Type: Journal Article
• Authors: Ding, Qianqian; Zhou, Hongjian; Zhang, Haimin; Zhang, Yunxia; Wang, Guozhong; Zhao, Huijun
• Is Part Of: Journal of materials chemistry. Volume 4:Issue 22(2016)
• Page Start: 8866
• Page End: 8874
• Publication Date: 2016-05-20
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c6ta02264b
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : A 3D Fe3 O4 @Au@Ag nanoflower assembled magnetoplasmonic chains used for in situ SERS monitoring of catalytic reactions and was constructed with 3D nanoflower shaped silver nanoplates coated on the magnetoplasmonic nanochains via a magnetic field induced assembly. Abstract : One-dimensional (1D) assembled magnetoplasmonic nanochains (MPNCs) were fabricated using Fe3 O4 @Au core–shell nanoparticles (NPs) via a magnetic field induced assembly. With the help of a silver growth solution, the 3D Fe3 O4 @Au@Ag nanoflowers assembled magnetoplasmonic chains (Fe3 O4 @Au@Ag NAMPCs) were prepared via an in situ reduction method. A heterogeneous epitaxial growth mechanism was proposed to explain the growth process of the Fe3 O4 @Au@Ag NAMPCs. The Fe3 O4 @Au@Ag NAMPCs possessed large numbers of hot spots within the highly ordered structure and were used as a SERS substrate to enhance the sensitivity, uniformity and reproducibility of Raman signals. Subsequently, the Fe3 O4 @Au@Ag NAMPCs, integrating a heterogeneous catalysis and in situ SERS detection, was assessed to monitor the catalytic reduction of 4-nitrothiophenol (4-NTP) to p, p ′-dimercaptoazobenzene (DMAB).