A single boron atom doped boron nitride edge as a metal-free catalyst for N2 fixation

Literature Information

Publication Date 2018-12-11
DOI 10.1039/C8CP07064D
Impact Factor 3.676
Authors

Xin Mao, Cheng Yan, Zhonghua Zhu, Aijun Du


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Abstract

N2 fixation is one of the most challenging tasks in chemistry. Recently, tremendous efforts have been devoted to transition metal-based materials. However, metal-free catalysts for N2 conversion have been rarely explored. Here, by using density functional theory, we predict, for the first time that a single B-atom decorated BN edge (B@BN) can act as a metal-free catalyst for the conversion of an N2 molecule to NH3 under ambient conditions. N2 fixation on the B@BN edge exhibits an extremely low overpotential of only 0.13 V through a distal mechanism. Moreover, fast removal of the produced NH3 molecule is observed with an uphill Gibbs free energy change of only 0.35 V, which is lower than those of ever-reported electrocatalysts such as Mo-doped BN and 2D Mxene. Our findings highlight a novel single atom metal-free catalyst for N2 fixation, providing a cost-efficient process for sustainable NH3 production.

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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