SERS Observation of the Adsorption Behavior of O2, H2O, and SO2 on Silver Powder Surfaces at Nearly Real Environmental Conditions
Keyword(s):
The interaction of O2, H2O, and SO2 on silver powder prepared from the reduction of AgNO3 by NaBH4 was studied by surface-enhanced Raman scattering (SERS) at room temperature. The presence of H2O of about 103 Pa and O2 of about 104-105 Pa was necessary for observation of SERS peaks of SO32− and SO42−. The superoxide ion O2- was observed under high partial pressure for O2 conditions. SERS peaks of atomic oxygen, superoxide ion O2-, SO32−, and SO42− disappeared on evacuation. SERS peaks of surface species such as Ag2O did not disappear on evacuation.
2005 ◽
Vol 59
(11)
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pp. 1305-1309
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2009 ◽
Vol 113
(15)
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pp. 6022-6032
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2003 ◽
Vol 107
(24)
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pp. 5723-5727
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2006 ◽
Vol 46
(3)
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pp. 299-305
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2006 ◽
Vol 46
(3)
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pp. 307-315
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