Yibo Guo , Sai Yao , Yuanyuan Xue , Xu Hu , Huijuan Cui , Zhen Zhou
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引用次数: 44
Abstract
The electrochemical reduction reaction of carbon dioxide (CO2RR) is an effective way towards carbon neutralization. Single-atom catalysts (SACs) are expected to be efficient for CO2RR due to maximum atom utilization and excellent catalytic performance. Here, nitrogen-doped carbon supported Ni SACs (Ni-SAC@NCs) were prepared through effective fast pyrolysis. CO2 can convert into CO efficiently with Ni-SAC@NCs as electrocatalysts for CO2RR. The faradaic efficiency kept well above 80% in the applied potential window of −0.6 to −0.9 V (vs. reversible hydrogen electrode (RHE)), with a highest FECO of 95% at −0.6 V (vs. RHE). Ni-SAC@NCs can achieve the best CO selectivity under a small overpotential, surpassing most other state-of-the-art catalysts. Computations also indicate that the unique defect-Ni-N3 structure is the active site. This work not only provides a simple and promising new route for the preparation of SACs, but also proves the key role of the coordination environment in electrocatalysis.
期刊介绍:
Applied Catalysis B: Environment and Energy (formerly Applied Catalysis B: Environmental) is a journal that focuses on the transition towards cleaner and more sustainable energy sources. The journal's publications cover a wide range of topics, including:
1.Catalytic elimination of environmental pollutants such as nitrogen oxides, carbon monoxide, sulfur compounds, chlorinated and other organic compounds, and soot emitted from stationary or mobile sources.
2.Basic understanding of catalysts used in environmental pollution abatement, particularly in industrial processes.
3.All aspects of preparation, characterization, activation, deactivation, and regeneration of novel and commercially applicable environmental catalysts.
4.New catalytic routes and processes for the production of clean energy, such as hydrogen generation via catalytic fuel processing, and new catalysts and electrocatalysts for fuel cells.
5.Catalytic reactions that convert wastes into useful products.
6.Clean manufacturing techniques that replace toxic chemicals with environmentally friendly catalysts.
7.Scientific aspects of photocatalytic processes and a basic understanding of photocatalysts as applied to environmental problems.
8.New catalytic combustion technologies and catalysts.
9.New catalytic non-enzymatic transformations of biomass components.
The journal is abstracted and indexed in API Abstracts, Research Alert, Chemical Abstracts, Web of Science, Theoretical Chemical Engineering Abstracts, Engineering, Technology & Applied Sciences, and others.