NDLI: A facile method to prepare noble metal nanoparticles modified Self-Assembly (SAM) electrode

Content Provider	Taylor & Francis Online
Author	Duan, Xiao Hu, Jin-quan Liu, Feng Huang, Long Li, Yun-yan Li, Bai-hui Lu, Jun
Abstract	Noble metal nanoparticles (NPs) modified electrodes have shown promising applications in the areas of catalysis, (electro)chemical analysis and biosensing due to their unique characters. In this paper, we introduced a so-called ligand exchange method to prepare self-assembly (SAM) electrode modified with noble metal nanoparticles. The noble metal nanoparticles protected by weakly adsorbed tetraoctylammonium bromide (TOAB) were synthesized firstly, then self-assembly (SAM) dithiol-modified Au electrode (Au-SHSAM) was immersed into the solutions containing TOAB-protected nanoparticles. Due to the strong interaction between the dithiol groups on the electrode and noble metal nanoparticles, the weakly adsorbed TOAB on the surface of noble metal NPs were replaced by dithiol groups. As a result, the TOAB protected NPs were anchored on the Au-SHSAM template electrode surface by ligand exchange, obtaining noble metal NPs modified electrode with high quality and stability. By adjusting the soaking time, the coverage of nanoparticles on the Au-SHSAM electrode surface could be controlled. The morphology and distribution of noble metal NPs on Au-SHSAM surface was analysis by scanning tunneling microscope (STM), and their electrochemical property was studied by cyclic voltammetry (CV) in H2SO4 solution. The approach is proved as a universal way to prepare noble metal NPs modified SAM electrode.
Starting Page	1
Ending Page	10
Page Count	10
File Format	PDF HTM / HTML
ISSN	17458080 17458099
DOI	10.1080/17458080.2017.1373202
Journal	Journal of Experimental Nanoscience
Volume Number	13
Issue Number	1
Language	English
Publisher	Taylor & Francis
Publisher Date	2017-12-20
Access Restriction	Open
Subject Keyword	Noble metal nanoparticles Ligand exchange method Electrochemistry Self-assembly electrode Coverage-controlled
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Materials Science Bioengineering Biomedical Engineering

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