TY - JOUR
T1 - Tricarbonyls of low-coordinated Au(0) atoms in zeolite-supported gold nanoparticles: evidence from infrared and X-ray absorption spectroscopies
AU - Anderson, B.G.
AU - Fierro-Gonzalez, J.C.
AU - Ramesh, K.
AU - Vinod, C.P.
AU - Niemantsverdriet, J.W.
AU - Gates, B.C.
PY - 2006
Y1 - 2006
N2 - Mononuclear gold complexes in zeolite NaY were synthesized from initially physisorbed Au(CH3)2(C5H7O2) and characterized by X-ray absorption and IR spectra recorded as the samples were exposed to flowing CO. X-ray absorption spectra demonstrate the formation of zero-valent gold nanoparticles during the CO treatment. Three new nCO bands grew in during this treatment, at 2070, 2033, and 2000 cm-1, characteristic of carbonyls of Au0. Because the relative intensities of these bands decreased monotonically when the flow of CO was replaced by flowing He, it is inferred that they correspond to a single Au0(CO)3 species, on low-coordinated Au atoms. This is the first example of an Au0(CO)3 species. [on SciFinder (R)]
AB - Mononuclear gold complexes in zeolite NaY were synthesized from initially physisorbed Au(CH3)2(C5H7O2) and characterized by X-ray absorption and IR spectra recorded as the samples were exposed to flowing CO. X-ray absorption spectra demonstrate the formation of zero-valent gold nanoparticles during the CO treatment. Three new nCO bands grew in during this treatment, at 2070, 2033, and 2000 cm-1, characteristic of carbonyls of Au0. Because the relative intensities of these bands decreased monotonically when the flow of CO was replaced by flowing He, it is inferred that they correspond to a single Au0(CO)3 species, on low-coordinated Au atoms. This is the first example of an Au0(CO)3 species. [on SciFinder (R)]
U2 - 10.1021/la0526535
DO - 10.1021/la0526535
M3 - Article
C2 - 16618180
VL - 22
SP - 4310
EP - 4314
JO - Langmuir
JF - Langmuir
SN - 0743-7463
IS - 9
ER -