Graphene oxide wrapped Fe3O4@Au nanohybrid as SERS substrate for aromatic dye detection

Ding, Guihong; Xie, Shi Jie; Zhu, Yongmei; Liu, Ying; Wang, Li; Xu, Fugang

doi:10.1016/j.snb.2015.07.074

Cited by 54 publications

(20 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[30] Copyright 2020, American Chemical Society improve the extraction efficiency, avoid tedious operation, and realize recycle use [13,33]. Thus, magnetic materials are normally combined with other advanced functional materials to prepare magnetic adsorbent materials for the safety analysis of aquatic products samples [21,[34][35][36]. For example, Li et al [30] embedded CoFe 2 O 4 nanobeads into halloysite nanotubes (HNTs) with AuNPs modification as multifunctional CoFe 2 O 4 @HNTs/AuNPs substrate for rapid and efficient MSPE surface-enhanced Raman scattering (SERS) detection of nitrofuran in fish, shrimp, and fish feed all-in-one ( Figure 1).…”

Section: Advanced Materials For Sample Preparationmentioning

confidence: 99%

Advanced materials on sample preparation for safety analysis of aquatic products

Lai

Zhang

2020

J of Separation Science

View full text Add to dashboard Cite

Safety analysis of aquatic products has been a challenge in recent years due to the serious matrix interference, complex characteristics, and ultra-low content of analytes. Introducing advanced materials to sample preparation technique can greatly improve the extraction, enrichment, and separation for further qualification and quantification of target analytes by coupling with consequent analytical technologies. Based on this scope, this review is mainly introducing advanced materials on the sample preparation for safety analysis of aquatic products in the past decade. After introducing the importance of the corresponding advanced materials, advanced materials are used for the sample preparation and in the improvement of safety analysis result of aquatic products. Advanced materials for sample preparation of aquatic products were reviewed including carbon materials, metal organic frameworks, covalent organic frameworks, molecularly/ions imprinted polymers, etc. Then, applications of the advanced materials for the analysis of specific fishery analytes (antibiotics, anesthetic, preservatives, etc.) were briefly introduced. Conclusions and perspectives on advanced materials for sample preparation and safety analysis of aquatic products were also presented.

show abstract

Section: Advanced Materials For Sample Preparationmentioning

confidence: 99%

Advanced materials on sample preparation for safety analysis of aquatic products

Lai

Zhang

2020

J of Separation Science

View full text Add to dashboard Cite

show abstract

“…Fe 3− x O 4 NPs can be produced otherwise by thermal decomposition, aqueous co-precipitation, forced hydrolysis in polyol and solvothermal route. The former methods lead to the production of relatively small in size single crystals (<50 nm in diameter), while the latter allows the production of larger in size single and/or polycrystals (30–400 nm) [ 36 , 37 , 38 , 39 , 40 , 41 , 42 ]. These NPs can be then modified by grafting organosilanes, phosphonic acids, diol or carboxylate-based ligands or polymers bearing amino terminal groups that can interact with Au NPs ( Figure 2 ).…”

Section: Structure and Synthesis Of Magneto-plasmonic Nanostructurmentioning

confidence: 99%

“…These NPs can be then modified by grafting organosilanes, phosphonic acids, diol or carboxylate-based ligands or polymers bearing amino terminal groups that can interact with Au NPs ( Figure 2 ). Typically, 3-aminopropyltriethoxysilane (APTES) [ 34 , 37 ], dopamine [ 42 ], polyethylene imine (PEI) [ 35 , 36 , 40 , 41 ], l -cysteine [ 38 ], poly (methyleneimine) [ 43 ], poly-(diallyldimethyl ammonium chloride) [ 44 ], cysteamine [ 45 ] have been extensively used for such a purpose.…”

Section: Structure and Synthesis Of Magneto-plasmonic Nanostructurmentioning

confidence: 99%

See 1 more Smart Citation

Iron Oxide and Gold Based Magneto-Plasmonic Nanostructures for Medical Applications: A Review

2018

View full text Add to dashboard Cite

Iron oxide and gold-based magneto-plasmonic nanostructures exhibit remarkable optical and superparamagnetic properties originating from their two different components. As a consequence, they have improved and broadened the application potential of nanomaterials in medicine. They can be used as multifunctional nanoprobes for magneto-plasmonic heating as well as for magnetic and optical imaging. They can also be used for magnetically assisted optical biosensing, to detect extreme traces of targeted bioanalytes. This review introduces the previous work on magneto-plasmonic hetero-nanostructures including: (i) their synthesis from simple “one-step” to complex “multi-step” routes, including seed-mediated and non-seed-mediated methods; and (ii) the characterization of their multifunctional features, with a special emphasis on the relationships between their synthesis conditions, their structures and their properties. It also focuses on the most important progress made with regard to their use in nanomedicine, keeping in mind the same aim, the correlation between their morphology—namely spherical and non-spherical, core-satellite and core-shell, and the desired applications.

show abstract

“…Star-shaped Fe 3-x O 4 -Au core-satellites and core-shell nanoparticles provide interesting magnetic and optical properties, making them appealing to broaden advances in magnetically assisted surface-enhanced Raman spectroscopy (SERS) applications [1][2][3][4][5][6][7]. On one hand, the anisotropic, in shape continuous or discontinuous gold structure with a thickness of less than 100 nm produces local high electric field enhancement, proceeding at the end of the gold tips and/or at their junctions (hot spots), for which the concentration of free electrons is high.…”

Section: Introductionmentioning

confidence: 99%

Star-Shaped Fe3-xO4-Au Core-Shell Nanoparticles: From Synthesis to SERS Application

et al. 2020

View full text Add to dashboard Cite

In this work, the preparation of magneto-plasmonic granular nanostructures and their evaluation as efficient substrates for magnetically assisted surface enhanced Raman spectroscopy (SERS) sensing are discussed. These nanostructures consist of star-shaped gold Au shell grown on iron oxide Fe3-xO4 multicores. They were prepared by seed-mediated growth of anisotropic, in shape gold nanosatellites attached to the surface of polyol-made iron oxide polycrystals. In practice, the 180 nm-sized spherical iron oxide particles were functionalized by (3-aminopropyl) triethoxysilane (APTES) to become positively charged and to interact, in solution, with negatively charged 2 nm-sized Au single crystals, leading to nanohybrids. These hybrids acted subsequently as nucleation platforms for the growth of a branched gold shell, when they were contacted to a fresh HAuCl4 gold salt aqueous solution, in the presence of hydroquinone, a reducing agent, for an optimized nominal weight ratio between both the starting hybrids and the gold salt. As expected, the resulting nanocomposites exhibit a high saturation magnetization at room temperature and a rough enough plasmonic surface, making them easily attracted by a lab. magnet, while exhibiting a great number of SERS hot spots. Preliminary SERS detection assays were successfully performed on diluted aqueous thiram solution (10−8 M), using these engineered substrates, highlighting their capability to be used as chemical trace sensors.

show abstract

Graphene oxide wrapped Fe3O4@Au nanohybrid as SERS substrate for aromatic dye detection

Cited by 54 publications

References 41 publications

Advanced materials on sample preparation for safety analysis of aquatic products

Advanced materials on sample preparation for safety analysis of aquatic products

Iron Oxide and Gold Based Magneto-Plasmonic Nanostructures for Medical Applications: A Review

Star-Shaped Fe3-xO4-Au Core-Shell Nanoparticles: From Synthesis to SERS Application

Contact Info

Product

Resources

About