In situ synthesis of bimetallic hybrid nanocatalysts on a paper-structured matrix for catalytic applications

Hirotaka Koga, Yuuka Umemura, Takuya Kitaoka

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Bimetallic nanoparticles have attracted significant attention as their electrochemical and catalytic properties being superior to those of the individual component nanoparticles. In this study, gold-silver hybrid nanoparticles (AuAgNPs) with an Aucore-Agshell nanostructure were successfully synthesized on zinc oxide (ZnO) whiskers. The as-prepared nanocatalyst, denoted AuAgNPs@ZnO whisker, exhibits an excellent catalytic efficiency in the aqueous reduction of 4-nitrophenol to 4-aminophenol; the turnover frequency was up to 40 times higher than that of each component nanoparticle. Their unique features were attributed to the electronic ligand effect at the bimetallic interface. In addition, the AuAgNPs were synthesized on a ZnO whisker-containing paper with a fiber-network microstructure, which was prepared via a papermaking technique. The paper-structured AuAgNPs composite possessed both a paper-like practical utility and a good catalytic performance. Furthermore, the on-paper synthesis process for these bimetallic nanocatalysts is facile. These easy-to-handle nanocatalyst hybrid composites are expected to find a wide range of applications in various chemical and catalytic processes.

Original languageEnglish
Pages (from-to)69-82
Number of pages14
JournalCatalysts
Volume1
Issue number1
DOIs
Publication statusPublished - Nov 25 2011

Fingerprint

Zinc Oxide
Zinc oxide
zinc oxides
Nanoparticles
nanoparticles
synthesis
matrices
Crystal whiskers
hybrid composites
Papermaking
Composite materials
Silver
Gold
Nanostructures
Ligands
silver
gold
microstructure
Microstructure
ligands

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Catalysis

Cite this

In situ synthesis of bimetallic hybrid nanocatalysts on a paper-structured matrix for catalytic applications. / Koga, Hirotaka; Umemura, Yuuka; Kitaoka, Takuya.

In: Catalysts, Vol. 1, No. 1, 25.11.2011, p. 69-82.

Research output: Contribution to journalArticle

@article{c5defb28810b470a98e4fab33da281a9,
title = "In situ synthesis of bimetallic hybrid nanocatalysts on a paper-structured matrix for catalytic applications",
abstract = "Bimetallic nanoparticles have attracted significant attention as their electrochemical and catalytic properties being superior to those of the individual component nanoparticles. In this study, gold-silver hybrid nanoparticles (AuAgNPs) with an Aucore-Agshell nanostructure were successfully synthesized on zinc oxide (ZnO) whiskers. The as-prepared nanocatalyst, denoted AuAgNPs@ZnO whisker, exhibits an excellent catalytic efficiency in the aqueous reduction of 4-nitrophenol to 4-aminophenol; the turnover frequency was up to 40 times higher than that of each component nanoparticle. Their unique features were attributed to the electronic ligand effect at the bimetallic interface. In addition, the AuAgNPs were synthesized on a ZnO whisker-containing paper with a fiber-network microstructure, which was prepared via a papermaking technique. The paper-structured AuAgNPs composite possessed both a paper-like practical utility and a good catalytic performance. Furthermore, the on-paper synthesis process for these bimetallic nanocatalysts is facile. These easy-to-handle nanocatalyst hybrid composites are expected to find a wide range of applications in various chemical and catalytic processes.",
author = "Hirotaka Koga and Yuuka Umemura and Takuya Kitaoka",
year = "2011",
month = "11",
day = "25",
doi = "10.3390/catal1010069",
language = "English",
volume = "1",
pages = "69--82",
journal = "Catalysts",
issn = "2073-4344",
publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",
number = "1",

}

TY - JOUR

T1 - In situ synthesis of bimetallic hybrid nanocatalysts on a paper-structured matrix for catalytic applications

AU - Koga, Hirotaka

AU - Umemura, Yuuka

AU - Kitaoka, Takuya

PY - 2011/11/25

Y1 - 2011/11/25

N2 - Bimetallic nanoparticles have attracted significant attention as their electrochemical and catalytic properties being superior to those of the individual component nanoparticles. In this study, gold-silver hybrid nanoparticles (AuAgNPs) with an Aucore-Agshell nanostructure were successfully synthesized on zinc oxide (ZnO) whiskers. The as-prepared nanocatalyst, denoted AuAgNPs@ZnO whisker, exhibits an excellent catalytic efficiency in the aqueous reduction of 4-nitrophenol to 4-aminophenol; the turnover frequency was up to 40 times higher than that of each component nanoparticle. Their unique features were attributed to the electronic ligand effect at the bimetallic interface. In addition, the AuAgNPs were synthesized on a ZnO whisker-containing paper with a fiber-network microstructure, which was prepared via a papermaking technique. The paper-structured AuAgNPs composite possessed both a paper-like practical utility and a good catalytic performance. Furthermore, the on-paper synthesis process for these bimetallic nanocatalysts is facile. These easy-to-handle nanocatalyst hybrid composites are expected to find a wide range of applications in various chemical and catalytic processes.

AB - Bimetallic nanoparticles have attracted significant attention as their electrochemical and catalytic properties being superior to those of the individual component nanoparticles. In this study, gold-silver hybrid nanoparticles (AuAgNPs) with an Aucore-Agshell nanostructure were successfully synthesized on zinc oxide (ZnO) whiskers. The as-prepared nanocatalyst, denoted AuAgNPs@ZnO whisker, exhibits an excellent catalytic efficiency in the aqueous reduction of 4-nitrophenol to 4-aminophenol; the turnover frequency was up to 40 times higher than that of each component nanoparticle. Their unique features were attributed to the electronic ligand effect at the bimetallic interface. In addition, the AuAgNPs were synthesized on a ZnO whisker-containing paper with a fiber-network microstructure, which was prepared via a papermaking technique. The paper-structured AuAgNPs composite possessed both a paper-like practical utility and a good catalytic performance. Furthermore, the on-paper synthesis process for these bimetallic nanocatalysts is facile. These easy-to-handle nanocatalyst hybrid composites are expected to find a wide range of applications in various chemical and catalytic processes.

UR - http://www.scopus.com/inward/record.url?scp=84863380037&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84863380037&partnerID=8YFLogxK

U2 - 10.3390/catal1010069

DO - 10.3390/catal1010069

M3 - Article

VL - 1

SP - 69

EP - 82

JO - Catalysts

JF - Catalysts

SN - 2073-4344

IS - 1

ER -