Single transition metal anchored C9N4 sheets as an efficient catalyst for CO oxidation: a first-principles study

文献情報

出版日 2020-12-23

DOI 10.1039/D0CP05306F

インパクトファクター 3.676

著者

Junchao Huang, Chun Zhou, Zhaoqin Chu, Xu Liu

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要旨

Single-atom catalysts (SACs) often exhibit superb catalytic activity due to their high atom utilization. By comparing the adsorption energies of O2 and CO adsorbed on TM@C9N4, we expect that Co and Ni anchored at the cavity of C9N4 exhibit a higher catalytic activity for CO oxidation. For the entire reaction, the Eley–Rideal, New Eley–Rideal, Ter-molecular Eley–Rideal and Langmuir–Hinshelwood mechanisms are all taken into account. Depending on the reaction mechanisms, the catalysts Co@C9N4 and Ni@C9N4 show excellent activity, with a kinetic energy barrier ranging from 0.19 eV to 0.54 eV for the former, while the corresponding energy barrier is 0.26 eV to 0.44 eV for the latter. The superior stability and activity of Co/Ni@C9N4 can efficiently oxidize the large amounts of CO caused by inadequate combustion of coal and natural gas resources.

掲載誌

Physical Chemistry Chemical Physics

CiteScore: 5.5

自己引用率: 10.3%

年間論文数: 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.

Single transition metal anchored C9N4 sheets as an efficient catalyst for CO oxidation: a first-principles study

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