马文强, 方炎, 郝刚领, 王伟国. Adsorption Behaviors of 4-Mercaptobenzoic Acid on Silver and Gold Films[J]. Chinese Journal of Chemical Physics , 2010, 23(6): 659-663. doi: 10.1088/1674-0068/23/06/659-663
Citation: 马文强, 方炎, 郝刚领, 王伟国. Adsorption Behaviors of 4-Mercaptobenzoic Acid on Silver and Gold Films[J]. Chinese Journal of Chemical Physics , 2010, 23(6): 659-663. doi: 10.1088/1674-0068/23/06/659-663

Adsorption Behaviors of 4-Mercaptobenzoic Acid on Silver and Gold Films

doi: 10.1088/1674-0068/23/06/659-663
Funds:  This work was supported by the Natural Sci-ence Foundation of Shanxi Province (No.SJ08-ZJ05, No2010JQ6009, and No.2010JK917).
  • Received Date: 2010-03-24
  • The adsorption behaviors of 4-mercaptobenzoic acid on silver and gold nanoparticles were studied by surface-enhanced Raman scattering (SERS) and density functional theory. The silver and gold films by electrodeposition have the same excellent characteristics as SERS-active substrates. At the same, the SERS spectra indicate that 4-mercaptobenzoic acid molecules are adsorbed on the surfaces of gold nanoparticles through the S atom, and that the carboxyl group is far away from surface of gold nanoparticles, and that there is a certain angle between the plane of benzene ring and gold film. However, 4-mercaptobenzoic acid molecules are adsorbed on the surfaces of silver nanoparticles through the carboxyl group, and the S atom is far away from surface of silver nanoparticles, and there is also a certain angle between the plane of benzene ring and the surface of silver nanoparticles. Here it is demonstrated the calculated Raman frequencies are in good agreement with experimental values, and the calculated Raman frequencies are also helpful to infer the adsorption behaviors of 4-mercaptobenzoic acid molecules.
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Adsorption Behaviors of 4-Mercaptobenzoic Acid on Silver and Gold Films

doi: 10.1088/1674-0068/23/06/659-663
Funds:  This work was supported by the Natural Sci-ence Foundation of Shanxi Province (No.SJ08-ZJ05, No2010JQ6009, and No.2010JK917).

Abstract: The adsorption behaviors of 4-mercaptobenzoic acid on silver and gold nanoparticles were studied by surface-enhanced Raman scattering (SERS) and density functional theory. The silver and gold films by electrodeposition have the same excellent characteristics as SERS-active substrates. At the same, the SERS spectra indicate that 4-mercaptobenzoic acid molecules are adsorbed on the surfaces of gold nanoparticles through the S atom, and that the carboxyl group is far away from surface of gold nanoparticles, and that there is a certain angle between the plane of benzene ring and gold film. However, 4-mercaptobenzoic acid molecules are adsorbed on the surfaces of silver nanoparticles through the carboxyl group, and the S atom is far away from surface of silver nanoparticles, and there is also a certain angle between the plane of benzene ring and the surface of silver nanoparticles. Here it is demonstrated the calculated Raman frequencies are in good agreement with experimental values, and the calculated Raman frequencies are also helpful to infer the adsorption behaviors of 4-mercaptobenzoic acid molecules.

马文强, 方炎, 郝刚领, 王伟国. Adsorption Behaviors of 4-Mercaptobenzoic Acid on Silver and Gold Films[J]. Chinese Journal of Chemical Physics , 2010, 23(6): 659-663. doi: 10.1088/1674-0068/23/06/659-663
Citation: 马文强, 方炎, 郝刚领, 王伟国. Adsorption Behaviors of 4-Mercaptobenzoic Acid on Silver and Gold Films[J]. Chinese Journal of Chemical Physics , 2010, 23(6): 659-663. doi: 10.1088/1674-0068/23/06/659-663

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