Stable 2D-structured supports incorporating ionic block copolymer-wrapped carbon nanotubes with graphene oxide toward compact decoration of metal nanoparticles and high-performance nano-catalysis

Kie Yong Cho, Heun Young Seo, Yong Sik Yeom, Pradip Kumar, Albert S. Lee, Kyung Youl Baek, Ho Gyu Yoon

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)

Abstract

The incorporation of pyrene-functionalized poly(methyl methacrylate)-b-poly(dimethylaminoethyl methacrylate) (PMMA-b-PDMAEMA) ionic block copolymer-wrapped carbon nanotubes (PBCNTs) with graphene oxide (GO) allows compact decoration of metal nanoparticles (NP) for use as robust catalysts. This well-tailored concept of the PBCNT-GO functional carbon support provides various features, including a two-dimensional (2D) structure, dimensional stability, versatile solubility (from toluene to water), enhanced diffusion of reagents, and recyclability. Among the various compositions of GO and PBCNT, 50 wt% of the PBCNT additive-containing support (PBCGO55) showed great hybridization potential for Ag, Au, and Pd NPs. In particular, the hybridization of PBCGO55 with Pd NPs (Pd-PBCGO55) displayed superior morphological features with compact decoration of ultra-fine NPs (1-3 nm), larger surface area, higher density of edge and corner atoms, better dispersion stability, and lesser aggregation of the decorated Pd NPs in comparison with the other hybrid catalysts. In the catalytic reduction of 4-nitrophenol (4-NP), the Pd-PBCGO55 hybrid catalyst exhibited the best catalytic performance, resulting in highly enhanced reaction rate constant (k) of 9.73 min-1 and catalytic activity of 141.8 mol mol-1 min-1, exhibiting a 50-fold increased rate constant and 30-fold increased catalytic activity in comparison to Ag-GO without PBCNT (k = 0.19 min-1, catalytic activity = 4.58 mol mol-1 min-1).

Original languageEnglish
Pages (from-to)340-352
Number of pages13
JournalCarbon
Volume105
DOIs
Publication statusPublished - 2016 Aug 1

Bibliographical note

Funding Information:
This work was supported by the Industrial Strategic Technology Development Program (Project No. 10041829 , Development of Prototype 154 kV Compact Power Cables with Insulation Thickness Decreased by 15% or More Based on Ultra-super smooth Semiconductive Materials) funded by the Ministry of Trade, Industry and Energy and partially supported by KIST-UNIST Partnership Program (Project No. 1.150091.01 ).

Publisher Copyright:
© 2016 Elsevier Ltd. All rights reserved.

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science

Fingerprint

Dive into the research topics of 'Stable 2D-structured supports incorporating ionic block copolymer-wrapped carbon nanotubes with graphene oxide toward compact decoration of metal nanoparticles and high-performance nano-catalysis'. Together they form a unique fingerprint.

Cite this