Manipulating Ferroelectric Polarization and Spin Polarization of 2D CuInP2S6 Crystals for Photocatalytic CO2 Reduction

• DOI: 10.1021/jacs.4c05798
• Publication Date: 2024-07-25T04:15:46Z
• Authors: Chun-Hao Chiang; Cheng-Chieh Lin; Yin-Cheng Lin; Chih-Ying Huang; Cheng-Han Lin; Ying-Jun Chen; Ting-Rong Ko; Heng-Liang Wu; Wen-Yen Tzeng; Sheng-Zhu Ho; Yi-Chun Chen; Ching-Hwa Ho; Cheng-Jie Yang; Zih-Wei Cyue; Chung-Li Dong; Chih-Wei Luo; Chia-Chun Chen; Chun-Wei Chen
• Keywords: Poling

Manipulating electronic polarizations such as ferroelectric or spin has recently emerged an effective strategy for enhancing the efficiency of photocatalytic reactions. This study demonstrates control modulated by and magnetic approaches within a two-dimensional (2D) layered crystal copper indium thiophosphate (CuInP2S6) to boost reduction CO2. We investigate substantial influence polarization on CO2 efficiency, utilizing ferroelectric-paraelectric phase transition alignment through electrical poling. Additionally, we explore harnessing electrons synergistic introduction sulfur vacancies applying field. Several advanced characterization techniques, including piezoresponse force microscopy, ultrafast pump–probe spectroscopy, in situ X-ray absorption diffuse reflectance infrared Fourier transformed are performed unveil underlying mechanism enhanced reduction. These findings pave way manipulating regulated modulations 2D materials advance