Synthesis of amorphous platinum nanofibers directly on an ITO substrate and its heterogeneous catalytic hydrogenation characterization

Aamna Balouch, Ali Umar Akrajas, Elvy Rahmi Mawarnis, Siti Khatijah Md Saad, Muhamad Mat Salleh, Mohd Yusri Abd Rahman, I. V. Kityk, Munetaka Oyama

Research output: Contribution to journalArticle

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Abstract

This paper reports a facile, solution-phase approach to synthesizing a one-dimensional amorphous face-centered-cubic (fcc) platinum (a-Pt) nanostructure (nanofibers) directly on an indium-tin oxide (ITO) substrate. The electron microscopy analysis result shows that the a-Pt nanofiber has a diameter and length of approximately 50 nm and 1 μm, respectively, and is grown in high density on the entire surface of the ITO substrate. The X-ray photoelectron spectroscopy analysis result further reveals that the a-Pt nanofibers feature metallic properties with highly reactive surface chemistry, promising novel performance in electrochemistry, catalysis, and sensors. A synergetic interplay between the formic acid reducing agent and the hexamethylenetetramine surfactant in the reduction of Pt ions is assumed as the driving force for the formation of the amorphous phase in the Pt nanostructure. The catalytic properties of a-Pt were examined in the acetone hydrogenation reaction under microwave irradiation. a-Pt shows excellent heterogeneous catalytic properties for converting acetone to isopropyl alcohol with turnover number and frequency as high as 400 and 140 min<sup>-1</sup>, respectively. The preparation and formation mechanism of the a-Pt nanofibers will be discussed in detail in this paper.

Original languageEnglish
Pages (from-to)7776-7785
Number of pages10
JournalACS Applied Materials and Interfaces
Volume7
Issue number14
DOIs
Publication statusPublished - 15 Apr 2015

Fingerprint

Nanofibers
Platinum
Tin oxides
Indium
Hydrogenation
formic acid
Substrates
Acetone
Nanostructures
Methenamine
Microwave irradiation
2-Propanol
Formic acid
Reducing Agents
Reducing agents
Electrochemistry
Surface chemistry
Surface-Active Agents
Electron microscopy
Catalysis

Keywords

  • amorphous metal
  • catalysis
  • chemical synthesis
  • nanofibers
  • platinum

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Synthesis of amorphous platinum nanofibers directly on an ITO substrate and its heterogeneous catalytic hydrogenation characterization. / Balouch, Aamna; Akrajas, Ali Umar; Mawarnis, Elvy Rahmi; Md Saad, Siti Khatijah; Mat Salleh, Muhamad; Abd Rahman, Mohd Yusri; Kityk, I. V.; Oyama, Munetaka.

In: ACS Applied Materials and Interfaces, Vol. 7, No. 14, 15.04.2015, p. 7776-7785.

Research output: Contribution to journalArticle

Balouch, Aamna ; Akrajas, Ali Umar ; Mawarnis, Elvy Rahmi ; Md Saad, Siti Khatijah ; Mat Salleh, Muhamad ; Abd Rahman, Mohd Yusri ; Kityk, I. V. ; Oyama, Munetaka. / Synthesis of amorphous platinum nanofibers directly on an ITO substrate and its heterogeneous catalytic hydrogenation characterization. In: ACS Applied Materials and Interfaces. 2015 ; Vol. 7, No. 14. pp. 7776-7785.
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