Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Апрель 21, 2025

Trivalent metal cation engineering in vacancy-ordered layered double perovskites (LDP) is a useful strategy to tune photocatalytic activity. However, the regulatory mechanism of composition on performance still lacks in-depth understanding. This study explores LDP with formula Cs4CdX2Cl12 (X = Bi, Sb) for CO2 reduction. The catalytic fine-tuned by regulating M(III)-site ions. yields CO and CH4 from Cs4CdSb2Cl12 MCs were measured at 23.81 2.68 μmol g-1, resulting selectivity 89.9%. Cs4CdBi2Cl12 demonstrated higher yields, produced 90.77 2.53 achieving 97.2%. In addition, situ diffuse reflectance infrared Fourier transform spectra reveal that modulation ions M(III)-position can enhance activity MCs. Density functional theory (DFT) analysis suggests Bi displays lower energy barrier than Sb rate-determining step, thus facilitating effective reduction CO. These findings highlight influence selection structural properties performance.

Язык: Английский