Sum frequency generation vibrational spectroscopy of pyridine hydrogenation on platinum nanoparticles

被引：37

作者：

Bratlie, Kaitlin M. ^{[1
,2
,3
]}

Komvopoulos, Kyriakos ^{[2
]}

Somorjai, Gabor A. ^{[1
,3
]}

机构：

[1] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA

[3] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2008年 / 112卷 / 31期

关键词：

D O I：

10.1021/jp801583q

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Pyridine hydrogenation in the presence of a surface monolayer consisting of cubic Pt nanoparticles stabilized by tetradecyltrimethylammonium bromide (TTAB) was investigated by sum frequency generation (SFG) vibrational spectroscopy using total internal reflection (TIR) geometry. TIR-SFG spectra analysis revealed that a pyridinium cation (C5H5NH+) forms during pyridine hydrogenation on the Pt nanoparticle surface, and the NH group in the C5H5NH+ cation becomes more hydrogen bound with the increase of the temperature. In addition, the surface coverage of the cation decreases with the increase of the temperature. An important contribution of this study is the in situ identification of reaction intermediates adsorbed on the Pt nanoparticle monolayer during pyridine hydrogenation.

引用

页码：11865 / 11868

页数：4

共 22 条

[1] QUANTITATIVE-ANALYSIS OF MONOLAYER COMPOSITION BY SUM-FREQUENCY VIBRATIONAL SPECTROSCOPY [J].

BAIN, CD ;

DAVIES, PB ;

ONG, TH ;

WARD, RN ;

BROWN, MA .

LANGMUIR, 1991, 7 (08) :1563-1566

[2] Platinum nanoparticle shape effects on benzene hydrogenation selectivity [J].

Bratlie, Kaitlin M. ;

Lee, Hyunjoo ;

Komvopoulos, Kyriakos ;

Yang, Peidong ;

Somorjai, Gabor A. .

NANO LETTERS, 2007, 7 (10) :3097-3101

[3] Hydrogenation and dehydrogenation of cyclohexene on Pt(100): A sum frequency generation vibrational spectroscopic and kinetic study [J].

Bratlie, KM ;

Flores, LD ;

Somorjai, GA .

SURFACE SCIENCE, 2005, 599 (1-3) :93-106

[4] ANGULAR RESOLVED PHOTOEMISSION-STUDIES OF PYRIDINE ON PT(111) - EVIDENCE FOR AN ALPHA-PYRIDYL SPECIES [J].

CONNOLLY, M ;

SOMERS, J ;

BRIDGE, ME ;

LLOYD, DR .

SURFACE SCIENCE, 1987, 185 (03) :559-568

[5] VIBRATIONAL ELECTRON-ENERGY LOSS SPECTROSCOPIC STUDY OF BENZENE, TOLUENE, AND PYRIDINE ADSORBED ON PD(111) AT 180 K [J].

GRASSIAN, VH ;

MUETTERTIES, EL .

JOURNAL OF PHYSICAL CHEMISTRY, 1987, 91 (02) :389-396

[6] Configurational transitions of benzene and pyridine adsorbed on Pt{111} and Cu{110} surfaces: An infrared study [J].

Haq, S ;

King, DA .

JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (42) :16957-16965

[7] RESONANCES IN THE K-SHELL EXCITATION-SPECTRA OF BENZENE AND PYRIDINE - GAS-PHASE, SOLID, AND CHEMISORBED STATES [J].

HORSLEY, JA ;

STOHR, J ;

HITCHCOCK, AP ;

NEWBURY, DC ;

JOHNSON, AL ;

SETTE, F .

JOURNAL OF CHEMICAL PHYSICS, 1985, 83 (12) :6099-6107

[8] Surface chemistry of dimethylamine on Pt(111): formation of methylaminocarbyne and its decomposition products [J].

Kang, DH ;

Trenary, M .

SURFACE SCIENCE, 2002, 519 (1-2) :40-56

[9] Surface chemistry of ethylenediamine (NH2CH2CH2NH2) on Pt(111) [J].

Kang, DH ;

Trenary, M .

SURFACE SCIENCE, 2000, 470 (1-2) :L13-L19

[10] Ultrahigh vacuum high-pressure reaction system for 2-infrared 1-visible sum frequency generation studies [J].

Kung, KY ;

Chen, P ;

Wei, F ;

Rupprechter, G ;

Shen, YR ;

Somorjai, GA .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2001, 72 (03) :1806-1809

← 1 2 3 →