Guangbin An, Kang Wang, Min Yang, Jiye Zhang, Haijian Zhong, Liang Wang, Huazhang Guo
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引用次数: 0
Abstract
The electrocatalytic reduction of CO2 (ECO2RR) to syngas with tunable CO/H2 ratios offers a promising route for sustainable energy conversion and chemical production. Here, we report a series of N-doped carbon black (NCBx) catalysts with tailored nitrogen species that enable precise control over the composition of syngas. Among the catalysts, NCB3 exhibits the optimal performance, achieving high CO selectivity (64.14%) and activity (1.9 mA cm-2) in an H-type cell at -0.9 V. Furthermore, NCB3 produces syngas with a wide range of CO/H2 ratios (0.52 to 4.77) across the applied potentials (-0.5 to -1.0 V). Stability tests confirm the robust durability of NCB3, which maintains consistent activity and selectivity over prolonged electrolysis. This work demonstrates the critical role of nitrogen species in tuning ECO2RR pathways and establishes a strategy for designing efficient and stable carbon-based catalysts for CO2 utilization and syngas production.
期刊介绍：
Molecules (ISSN 1420-3049, CODEN: MOLEFW) is an open access journal of synthetic organic chemistry and natural product chemistry. All articles are peer-reviewed and published continously upon acceptance. Molecules is published by MDPI, Basel, Switzerland. Our aim is to encourage chemists to publish as much as possible their experimental detail, particularly synthetic procedures and characterization information. There is no restriction on the length of the experimental section. In addition, availability of compound samples is published and considered as important information. Authors are encouraged to register or deposit their chemical samples through the non-profit international organization Molecular Diversity Preservation International (MDPI). Molecules has been launched in 1996 to preserve and exploit molecular diversity of both, chemical information and chemical substances.
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