Operando Evolution of the Structure and Oxidation State of Size-Controlled Zn Nanoparticles during CO2 Electroreduction

Journal of the American Chemical Society
Hyo Sang JeonBeatriz Roldan Cuenya

Abstract

We explored the size-dependent activity and selectivity of Zn nanoparticles (NPs) for the electrochemical CO2 reduction reaction (CO2RR). Zn NPs ranging from 3 to 5 nm showed high activity and selectivity (∼70%) for CO production, whereas those above 5 nm exhibited bulk-like catalytic properties. In addition, a drastic increase in hydrogen production was observed for the Zn NPs below 3 nm, which is associated with the enhanced content of low-coordinated sites on small NPs. The presence of residual cationic Zn species in the catalysts was also revealed during CO2RR via operando X-ray absorption fine-structure spectroscopy measurements. Such species are expected to play a role in the selectivity trends obtained. Our findings can serve as guidance for the development of highly active and CO-selective Zn-based catalysts for CO2RR.

References

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Nov 23, 2012·Journal of the American Chemical Society·Yihong ChenMatthew W Kanan
Apr 22, 2014·Journal of the American Chemical Society·Rulle ReskePeter Strasser
Oct 18, 2014·Journal of the American Chemical Society·Hemma MistryBeatriz Roldan Cuenya
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Apr 10, 2016·Angewandte Chemie·Anna LoiudiceRaffaella Buonsanti
Jul 1, 2016·Nature Communications·Hemma MistryBeatriz Roldan Cuenya
Jul 28, 2016·Proceedings of the National Academy of Sciences of the United States of America·Anna WuttigYogesh Surendranath
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Citations

Apr 8, 2020·Nanoscale·Xudong Wen, Jingqi Guan
Jul 10, 2020·Advanced Materials·Minhan LiJianping Yang
Sep 19, 2018·Proceedings of the National Academy of Sciences of the United States of America·Irina V ChernyshovaSathish Ponnurangam
Nov 10, 2020·Angewandte Chemie·Guido ZichittellaJavier Pérez-Ramírez
Feb 25, 2021·Chemical Society Reviews·Genxiang WangLiming Dai
Mar 5, 2019·Journal of the American Chemical Society·Yong-Wook ChoiBeatriz Roldan Cuenya
Sep 29, 2020·Chemical Reviews·Janis Timoshenko, Beatriz Roldan Cuenya
Nov 12, 2021·Advanced Science·Aya Gomaa Abdelkader MohamedYaobing Wang

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