Spontaneous Phase-Transformed Interface to Boost Tandem Reoxidation for CO2 Reduction and OTC Degradation via Synergistic Photothermal Effect

Le résumé fourni par la source

The robust S-scheme p–n junction between Cu 2 O and Cu-TCPP has been designed by controllable in situ topological reduction. This coshared Cu atom spontaneously transformed interface with abundant oxygen vacancies exhibited a wide light absorption range and a strong internal building electric field. The introduction of the photothermal effect accelerated the reaction kinetics to extract electrons further effectively for photocatalytic interaction, which was confirmed by the tandem CO 2 reduction and OTC degradation experiments. Cu 2 O-10R stands out with an impressive CO production rate of 103.7 μmol g –1 h –1 and a high selectivity of 95.4%, 1.77 times and 1.12-fold that of the single half-reduction. DFT and the experiment have verified the real active sites: Cu-TCPP as electron accumulations in the reduction side and the induced Cu 2 O as a hole resoluble pool in the oxidation side. Hence, this in situ-derived p–n junction not only modulates to expedite the carrier’s migration dynamics but also boosts the separation efficiency to achieve superior reoxidation activity.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.