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Prof. Fuxia Huang

Xi'an Jiaotong University

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SCIENCE CHINA Materials2026DOI: 10.1007/s40843-025-3432-8

Correction to: Crystal Defects Engineering of BiOI Elevated Photocatalytic CO2 to C2 Conversion Performance

This correction addresses an error in the labeling of author affiliations in the original publication (Sci China Mater, 2025, 68: 1561, DOI: 10.1007/s40843-024-3290-9). The corrected affiliations are as follows: Fuxia Huang, Feng Wang, Ya Liu, and Liejin Guo are affiliated with the International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China. Yifei Liu is affiliated with the School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China. The correction was made upon the request of the authors and with approval from the respective institutions. The original article focused on crystal defects engineering of BiOI to enhance photocatalytic CO2 reduction to C2 products, a critical area for sustainable fuel synthesis. This correction ensures accurate attribution and institutional recognition, which is essential for research integrity and reproducibility. No changes were made to the scientific content or conclusions of the original study.

SCIENCE CHINA Materials2025DOI: 10.1007/s40843-024-3290-9

Crystal defects engineering of BiOI elevated photocatalytic CO2 to C2 conversion performance

BiOI photocatalysts exhibit potential for CO2 reduction, but suffer from insufficient CO2 activation and poor charge carrier dynamics, limiting conversion efficiency. This study introduces abundant crystal defects into BiOI via pH modulation of the synthesis solution. X-ray diffraction (XRD), Raman spectroscopy, and high-resolution transmission electron microscopy (HRTEM) confirm lattice distortions in BiOI-LD and twin crystals in BiOI-TC. Ultraviolet-visible spectroscopy, micropore and chemisorption analyses, and photoluminescence spectroscopy reveal that these defects enhance light absorption, CO2 adsorption capacity, charge transfer efficiency, and carrier lifetime. Electron paramagnetic resonance (EPR) spectroscopy indicates increased superoxide radical generation in BiOI-TC, correlating with higher reactivity. BiOI-TC achieves a CH3CH2OH evolution rate of 6.2 μmol g−1 h−1 with 100% selectivity, a 12-fold enhancement over pristine BiOI. In situ FTIR identifies key intermediates (*COOH, *CO, *COCO, *CHO, *CH2) for ethanol production, while *CH3 is linked to C2H6 formation in BiOI-LD. This work demonstrates that crystal defect engineering effectively tunes product selectivity and activity in photocatalytic CO2 reduction.

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