Antimony-doped Graphene Nanoplatelets

Overview

Journal Nat Commun

Specialty Biology

Date 2015 May 23

PMID 25997811

Citations 8

Authors

In-Yup Jeon

Min Choi

Hyun-Jung Choi

Sun-Min Jung

Min-Jung Kim

Jeong-Min Seo

Seo-Yoon Bae

Seonyoung Yoo

Guntae Kim

Hu Young Jeong

Noejung Park

Jong-Beom Baek

Affiliations

Soon will be listed here.

Abstract

Heteroatom doping into the graphitic frameworks have been intensively studied for the development of metal-free electrocatalysts. However, the choice of heteroatoms is limited to non-metallic elements and heteroatom-doped graphitic materials do not satisfy commercial demands in terms of cost and stability. Here we realize doping semimetal antimony (Sb) at the edges of graphene nanoplatelets (GnPs) via a simple mechanochemical reaction between pristine graphite and solid Sb. The covalent bonding of the metalloid Sb with the graphitic carbon is visualized using atomic-resolution transmission electron microscopy. The Sb-doped GnPs display zero loss of electrocatalytic activity for oxygen reduction reaction even after 100,000 cycles. Density functional theory calculations indicate that the multiple oxidation states (Sb(3+) and Sb(5+)) of Sb are responsible for the unusual electrochemical stability. Sb-doped GnPs may provide new insights and practical methods for designing stable carbon-based electrocatalysts.

Citing Articles

Characterization of Antimicrobial Properties of Copper-Doped Graphitic Nanoplatelets.

Kang J, Yoon S, Park H, Lee S, Baek J, Jeon I Int J Mol Sci. 2024; 25(22).

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Electrochemically Versatile Graphite Nanoplatelets Prepared by a Straightforward, Highly Efficient, and Scalable Route.

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Microwave-Assisted Synthesis of Nitrogen and Sulphur Doped Graphene Decorated with Antimony Oxide: An Effective Catalyst for Oxygen Reduction Reaction.

Garino N, Sacco A, Chiodoni A, Pirri C, Castellino M Materials (Basel). 2022; 15(1).

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