Facile fabrication of Pt, Pd and Pt-Pd alloy films on Si with tunable infrared internal reflection absorption and synergetic electrocatalysis

Chao Wang, Bin Peng, Hai Nan Xie, Han Xuan Zhang, Fei Fei Shi, Wen Bin Cai

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

A new facile fabrication of Pt, Pd and their alloy films on Si, intended mainly for in situ ATR surface infrared spectroscopy and electrocatalysis study, has been achieved through an alternate electroless deposition approach from very simple acidic baths with hydrazine dihydrochloride as the reducing agent. Compositional analyses reveal that Pt and Pd elemental ratios in the alloy films are close to those in the plating baths, and higher in skin layers compared to those of bulk films. Electrochemical and IR spectroscopic characterizations suggest the Pt - Pd alloy films may exhibit synergetic effects in surface electrochemistry toward oxidation of CO adlayer and formic acid. Of particular interest is the reproducible control of internal reflection absorption responses through adjusting Pt and Pd compositions in the films. More enhanced surface IR absorption with normal band shape and direction was observed for surface species at Pt and Pd electrodes. For the as-deposited Pt - Pd alloys, in addition to less enhanced IR absorption intensity, bipolar and totally inverted bands may appear for different alloy films.

Original languageEnglish (US)
Pages (from-to)13841-13846
Number of pages6
JournalJournal of Physical Chemistry C
Volume113
Issue number31
DOIs
StatePublished - Aug 6 2009

Fingerprint

Electrocatalysis
Infrared radiation
Fabrication
fabrication
formic acid
hydrazine
baths
electroless deposition
Electroless plating
Hydrazine
Formic acid
Reducing Agents
hydrazines
Reducing agents
Electrochemistry
Carbon Monoxide
electrochemistry
plating
Plating
Infrared spectroscopy

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

Cite this

@article{1ca6027e8974444097caf4da65d5147c,
title = "Facile fabrication of Pt, Pd and Pt-Pd alloy films on Si with tunable infrared internal reflection absorption and synergetic electrocatalysis",
abstract = "A new facile fabrication of Pt, Pd and their alloy films on Si, intended mainly for in situ ATR surface infrared spectroscopy and electrocatalysis study, has been achieved through an alternate electroless deposition approach from very simple acidic baths with hydrazine dihydrochloride as the reducing agent. Compositional analyses reveal that Pt and Pd elemental ratios in the alloy films are close to those in the plating baths, and higher in skin layers compared to those of bulk films. Electrochemical and IR spectroscopic characterizations suggest the Pt - Pd alloy films may exhibit synergetic effects in surface electrochemistry toward oxidation of CO adlayer and formic acid. Of particular interest is the reproducible control of internal reflection absorption responses through adjusting Pt and Pd compositions in the films. More enhanced surface IR absorption with normal band shape and direction was observed for surface species at Pt and Pd electrodes. For the as-deposited Pt - Pd alloys, in addition to less enhanced IR absorption intensity, bipolar and totally inverted bands may appear for different alloy films.",
author = "Chao Wang and Bin Peng and Xie, {Hai Nan} and Zhang, {Han Xuan} and Shi, {Fei Fei} and Cai, {Wen Bin}",
year = "2009",
month = "8",
day = "6",
doi = "10.1021/jp9034562",
language = "English (US)",
volume = "113",
pages = "13841--13846",
journal = "Journal of Physical Chemistry C",
issn = "1932-7447",
publisher = "American Chemical Society",
number = "31",

}

Facile fabrication of Pt, Pd and Pt-Pd alloy films on Si with tunable infrared internal reflection absorption and synergetic electrocatalysis. / Wang, Chao; Peng, Bin; Xie, Hai Nan; Zhang, Han Xuan; Shi, Fei Fei; Cai, Wen Bin.

In: Journal of Physical Chemistry C, Vol. 113, No. 31, 06.08.2009, p. 13841-13846.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Facile fabrication of Pt, Pd and Pt-Pd alloy films on Si with tunable infrared internal reflection absorption and synergetic electrocatalysis

AU - Wang, Chao

AU - Peng, Bin

AU - Xie, Hai Nan

AU - Zhang, Han Xuan

AU - Shi, Fei Fei

AU - Cai, Wen Bin

PY - 2009/8/6

Y1 - 2009/8/6

N2 - A new facile fabrication of Pt, Pd and their alloy films on Si, intended mainly for in situ ATR surface infrared spectroscopy and electrocatalysis study, has been achieved through an alternate electroless deposition approach from very simple acidic baths with hydrazine dihydrochloride as the reducing agent. Compositional analyses reveal that Pt and Pd elemental ratios in the alloy films are close to those in the plating baths, and higher in skin layers compared to those of bulk films. Electrochemical and IR spectroscopic characterizations suggest the Pt - Pd alloy films may exhibit synergetic effects in surface electrochemistry toward oxidation of CO adlayer and formic acid. Of particular interest is the reproducible control of internal reflection absorption responses through adjusting Pt and Pd compositions in the films. More enhanced surface IR absorption with normal band shape and direction was observed for surface species at Pt and Pd electrodes. For the as-deposited Pt - Pd alloys, in addition to less enhanced IR absorption intensity, bipolar and totally inverted bands may appear for different alloy films.

AB - A new facile fabrication of Pt, Pd and their alloy films on Si, intended mainly for in situ ATR surface infrared spectroscopy and electrocatalysis study, has been achieved through an alternate electroless deposition approach from very simple acidic baths with hydrazine dihydrochloride as the reducing agent. Compositional analyses reveal that Pt and Pd elemental ratios in the alloy films are close to those in the plating baths, and higher in skin layers compared to those of bulk films. Electrochemical and IR spectroscopic characterizations suggest the Pt - Pd alloy films may exhibit synergetic effects in surface electrochemistry toward oxidation of CO adlayer and formic acid. Of particular interest is the reproducible control of internal reflection absorption responses through adjusting Pt and Pd compositions in the films. More enhanced surface IR absorption with normal band shape and direction was observed for surface species at Pt and Pd electrodes. For the as-deposited Pt - Pd alloys, in addition to less enhanced IR absorption intensity, bipolar and totally inverted bands may appear for different alloy films.

UR - http://www.scopus.com/inward/record.url?scp=68549111114&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=68549111114&partnerID=8YFLogxK

U2 - 10.1021/jp9034562

DO - 10.1021/jp9034562

M3 - Article

AN - SCOPUS:68549111114

VL - 113

SP - 13841

EP - 13846

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

SN - 1932-7447

IS - 31

ER -