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Study on the chemisorption kinetics of Methylene Blue using SERS technique
Author(s) -
Chen WanXi,
Jiang Hua,
Xu ZhuDe,
Lu Yun
Publication year - 1999
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.19990170205
Subject(s) - chemistry , chemisorption , methylene blue , methylene , kinetics , photochemistry , nanotechnology , organic chemistry , catalysis , adsorption , physics , photocatalysis , quantum mechanics , materials science
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.