Feng, Xuezhen Zou, Haiyuan Zheng, Renji Wei, Wenfei Wang, Ranhao Zou, Wensong Lim, Gukhyun Hong, Jihyun Duan, Lele Chen, Hong 2024-01-19T12:33:28Z 2024-01-19T12:33:28Z 2022-05-04 2022-02 1530-6984 https://pubs.kist.re.kr/handle/201004/115641 Heterostructure engineering plays a vital role in regulating the material interface, thus boosting the electron transportation pathway in advanced catalysis. Herein, a novel Bi2O3/BiO2 heterojunction catalyst was synthesized via a molten alkali-assisted dealumination strategy and exhibited rich structural dynamics for an electrocatalytic CO2 reduction reaction (ECO2RR). By coupling in situ X-ray diffraction and Raman spectroscopy measurements, we found that the as-synthesized Bi2O3/BiO2 heterostructure can be transformed into a novel Bi/BiO2 Mott-Schottky heterostructure, leading to enhanced adsorption performance for CO2 and *OCHO intermediates. Consequently, high selectivity toward formate larger than 95% was rendered in a wide potential window along with an optimum partial current density of -111.42 mA cm(-2) that benchmarked with the state-of-the-art Bi-based ECO2RR catalysts. This work reports the construction and fruitful structural dynamic insights of a novel heterojunction electrocatalyst for ECO2RR, which paves the way for the rational design of efficient heterojunction electrocatalysts for ECO2RR and beyond. English American Chemical Society Bi2O3/BiO2 Nanoheterojunction for Highly Efficient Electrocatalytic CO2 Reduction to Formate Article 10.1021/acs.nanolett.1c04683 1 Nano Letters, v.22, no.4, pp.1656 - 1664 Nano Letters 22 4 1656 1664 N scie scopus 000776700100027 2-s2.0-85124272256 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article ELECTROCHEMICAL REDUCTION FORMIC-ACID FUEL-CELL BI ELECTROREDUCTION DESIGN SYSTEM SN Dealumination Heterojunction CO2 Reduction Structure Evolution Bismuth Oxides