✦ LIBER ✦

Study on the chemisorption kinetics of Methylene Blue using SERS technique

✍ Scribed by Wan-Xi Chen; Hua Jiang; Zhu-De Xu; Yun Lu

Publisher: John Wiley and Sons
Year: 2010
Tongue: English
Weight: 362 KB
Volume: 17
Category: Article
ISSN: 0256-7660
DOI: 10.1002/cjoc.19990170205

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

SERS technique wae used to study the chemiesorption kinetics of Methylene Blue (MB) on the HNO~3~‐etched silver surface. The adsorption kinetic parameters were deduced from different vibrational modes at a low concentration of 3.5 × 10^−6^ mol/L, and it showed that MB adsorbed uniformly (monolayerly) on silver surface. However, the adsorptive behavior turned anomalous at relatively higher concentrations and a possible explanation was suggested. In addition, the influence of Cl^−^ ions on the adsorption states of MB was investigated, and it was shown that MB molecules, adsorbed on the silver surface, tended to transform the “lying‐down” state to the “end ‐ on” 4 state after CI^−^ ions were added.

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