High faradic efficiency of CO2 conversion to formic acid catalyzed by Cu2O hollow-dices

Springer Science and Business Media LLC - Tập 1 Số 1
Jing Li1, Meng Chen2, Jingkun Gu2, Honglin Wang2, Ruoyun Dai3, Haozhi Sha2, Hongwei Zhu2
1State Key Laboratory of Solid Waste Reuse for Building Materials, Beijing Building Materials Academy of Sciences Research, 100041, Beijing, China
2State Key Lab of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, 100084, Beijing, China
3Department of Chemistry, Tsinghua University, 100084, Beijing, China

Tóm tắt

AbstractCu2O has been intensively studied as an efficient catalyst for CO2 reduction reaction (CO2RR). By various methods for fine-tuning the morphology and surface modification, high selectivity and activity of different products can be achieved. Here, we report a novel Cu2O nanostructure design by facet-controlled etching, during which the catalyst structure switched from a cuboctahedron architecture to a hollow dice-like structure. The as-etched catalysts exhibit a high Faradic efficiency of formic acid, reaching 75.1% at a low potential of -1.0 V. Further characterizations indicate that the performance enhancement is attributed to the increased oxygen vacancies induced by the etching process. Our Cu2O nanostructure design provides a new approach for high-efficiency catalysts for formic acid production at low potentials.

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