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Table 2 Assignments of the visible bands in the DRIFT spectra of Silia Cat Pd 0 and Silia Cat Pt 0

From: The sol-gel entrapment of noble metals in hybrid silicas: a molecular insight

Wavenumber /cm-1

Assignments [[20],[21]]

SiliaCat Pt0

SiliaCat Pd0

~3500 (broad)

~3500 (broad)

νO-H

2974w

2972w

νas(Si)CH3

2914vw

2914vw

νs(Si)CH3

1410w

1410w

δas(Si)CH3

1273S

1273m

δs(Si)CH3

1130VS

1126VS

νasSi-O-Si

1036VS

1034VS

νasSi-O-Si

924vw

922vw

νSi-Od

852w

854w

ω(Si)CH3

781VS

781VS

ρ(Si)CH3

681w

681w

νSi-C

546w

550w

(SiO)4 rings