Preparation of Palladium Catalysts Supported on Carbon Nanotubes by an Electrostatic Adsorption Method | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

2839314

Reference Type

Journal Article

Title

Preparation of Palladium Catalysts Supported on Carbon Nanotubes by an Electrostatic Adsorption Method

Author(s)

Zhang, L; Wen, G; Liu, H; Wang, N; Su, DS

Year

2014

Is Peer Reviewed?

Yes

Journal

ChemCatChem
ISSN: 1867-3880
EISSN: GmbH & Co. KGaA

Volume

Issue

Page Numbers

2600-2606

DOI

10.1002/cctc.201402175

Web of Science Id

WOS:000342740300025

Abstract

Pd nanoparticles supported on carbon nanotubes (CNTs) with an average Pd size of around 1nm were synthesized successfully by a facile strong electrostatic adsorption (SEA) method. CNTs functionalized with various surface oxygen functional groups (SFGs) were obtained by treating the raw CNTs with concentrated HNO3 or HNO3/H2SO4. The SFGs could decrease the point of zero charge (PZC) of the CNTs and promoted the adsorption of Pd cationic complexes on the CNTs. In particular, the intrinsic and insitu formed (hydrolyzed from carboxylic anhydride groups) carboxylic acid groups of the CNTs during the adsorption process mainly influenced the adsorption of Pd cationic complexes. The SEA method was superior to the traditional incipient wetness impregnation method for the synthesis of highly dispersed Pd catalysts, which exhibited a high specific activity for the Suzuki coupling reaction.

Keywords

CC coupling; nanoparticles; nanotubes; palladium; supported catalysts