Surface-enhanced Raman Spectroscopy of Arsenate and Arsenite Using Ag Nanofilm Prepared by Modified Mirror Reaction

Surface-enhanced Raman Spectroscopy of Arsenate and Arsenite Using Ag Nanofilm Prepared by Modified Mirror Reaction: "Publication year: 2010
Source: Journal of Colloid and Interface Science, In Press, Accepted Manuscript, Available online 16 March 2010
Zhonghou, Xu , Jumin, Hao , Fasheng, Li , Xiaoguang, Meng
A modified mirror reaction was developed to prepare a sensitive and reproducible Ag nanofilm substrate for the surface-enhanced Raman scattering (SERS) analysis of arsenate (As(V)) and arsenite (As(III)). A good linear relationship between the SERS intensity of As(V) and As(III) and their concentrations in the range from 10 to 500 μg-As/L was achieved using the SERS substrate. As(V) and As(III) appear to be adsorbed on the Ag nanofilm through formation of surface complexes with Ag, based on comparisons of the Raman spectra of the arsenic species in solutions, on the SERS substrate, and in silver arsenate and arsenite solids. As(V)...

Graphical abstract

Mirror reaction was modified to prepare a sensitive silver nanofilm which can detect ppb level As(V) and As(III).
"