[The enhanced mechanism of Cl- to SERS in silver colloid].
The SERS is enhanced when KCl is added to silver colloid and cation molecule. The hypothesis supposed that Cl- bridged between nano-silver and molecule, as a result the molecule adsorbing on nano-silver surface is promoted and the SERS is therefore enhanced. The CN- and NH3 can be better adsorbed when they are added separately to the nano-silver particles, Cl- and anion molecule. The SERS reduces when CN- and NH3 are added separately to Cl-, anion molecule and silver colloid. The result is that the CN- and NH3 are so strong that they have replaced Cl- and anion molecules. Therefore the SERS reduces. This has proved the bridge role of Cl-.
Si
M
M
Department of Physics, Chuxiong Teacher's College, 675000 Chuxiong.
Wu
R
R
Zhang
P
P
D000327:Adsorption; D000838:Anions; D002412:Cations; D002712:Chlorides / Q000737:chemistry*; D003102:Colloids / Q000737:chemistry; D015394:Molecular Structure; D036103:Nanotechnology; D009942:Organometallic Compounds / Q000737:chemistry; D010316:Particle Size; D012542:Scattering, Radiation; D012834:Silver / Q000737:chemistry*; D018030:Silver Compounds / Q000737:chemistry*; D013059:Spectrum Analysis, Raman; D013499:Surface Properties
D000838:Anions; D002412:Cations; D002712:Chlorides; D003102:Colloids; D009942:Organometallic Compounds; D018030:Silver Compounds; D012834:Silver