Issue 46, 2019

Sub-5 nm palladium nanoparticles in situ embedded in N-doped carbon nanoframes: facile synthesis, excellent sinter resistance and electrocatalytic properties

Abstract

Carbon-supported palladium (Pd/C) is well known for its excellent electrocatalytic performance in fuel cells. However, effective synthesis of small Pd nanoparticles uniformly distributed on carbon supports with high sinter resistance remains a considerable challenge. Here, we report an efficient 1-naphthylamine (C10H7–NH2)-driven pyrolysis strategy for the facile preparation of N-doped carbon nanoframes with 4.6 nm Pd nanoparticles uniformly embedded in their surface (Pd@N–C NFs). The synthetic strategy greatly depends on the formation of a planar PdII–(C10H7–NH2) coordination complex, which provides a confined environment for the growth of sub-5 nm Pd nanoparticles and prevents the aggregation of the particles at elevated temperatures. Compared with traditional Pd/C, Pd@N–C NFs exhibit good sinter resistance when subjected to heat treatment at different elevated temperatures. Benefiting from the unique composition/structure-dependent properties, the newly developed Pd@N–C NFs present good excellent activity and stability for the formic acid oxidation and oxygen reduction reaction. We believe that this strategy can be extended as a general method for fabricating other metal-embedded carbon materials.

Graphical abstract: Sub-5 nm palladium nanoparticles in situ embedded in N-doped carbon nanoframes: facile synthesis, excellent sinter resistance and electrocatalytic properties

Supplementary files

Article information

Article type
Communication
Submitted
08 Oct 2019
Accepted
28 Oct 2019
First published
14 Nov 2019

J. Mater. Chem. A, 2019,7, 26243-26249

Sub-5 nm palladium nanoparticles in situ embedded in N-doped carbon nanoframes: facile synthesis, excellent sinter resistance and electrocatalytic properties

X. Jiang, J. Wang, T. Huang, G. Fu, Y. Tang, X. Qiu, J. Zhou and J. Lee, J. Mater. Chem. A, 2019, 7, 26243 DOI: 10.1039/C9TA11097F

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