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Promotion of Electrocatalytic Hydrogen Evolution Reaction on Nitrogen-Doped Carbon Nanosheets with Secondary Heteroatoms

Lookup NU author(s): Professor Sheng Dai

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Abstract

© 2017 American Chemical Society. Dual heteroatom-doped carbon materials are efficient electrocatalysts via a synergistic effect. With nitrogen as the primary dopant, boron, sulfur, and phosphorus can be used as secondary elements for co-doped carbons. However, evaluation and analysis of the promotional effect of B, P, and S to N-doped carbons has not been widely researched. Here we report a robust platform that is constructed through polydopamine to prepare N,B-, N,P-, and N,S-co-doped carbon nanosheets, characterized by similar N species content and efficient B, P, and S doping. Systematic investigation reveals S to have the greatest promotional effect in hydrogen evolution reactions (HER) followed by P and that B decreases the activity of N-doped carbons. Experimental and theoretical analyses show the secondary heteroatom promotional effect is impacted by the intrinsic structures and extrinsic surface areas of both materials, i.e., electronic structures exclusively determine the catalytic activity of active sites, while large surface areas optimize apparent HER performance.


Publication metadata

Author(s): Qu K, Zheng Y, Zhang X, Davey K, Dai S, Qiao SZ

Publication type: Article

Publication status: Published

Journal: ACS Nano

Year: 2017

Volume: 11

Issue: 7

Pages: 7293-7300

Print publication date: 25/07/2017

Online publication date: 22/06/2017

Acceptance date: 22/06/2017

ISSN (print): 1936-0851

ISSN (electronic): 1936-086X

Publisher: American Chemical Society

URL: https://doi.org/10.1021/acsnano.7b03290

DOI: 10.1021/acsnano.7b03290


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