Promoted photocarrier transfer and increased active sites for optimal CO2-to-CH4 photoconversion via the modification of atomically dispersed transition metal ions in CdZnS nanocrystals

Abstract

Atomically dispersed transition metal ion doped CdZnS nanocrystals were synthesized to delicately tune the selectivity for CO₂ photoreduction to CH₄, among which the CZS–Cu²⁺ achieved an excellent CO₂-to-CH₄ conversion rate of ca. 665.9 μL h⁻¹ g⁻¹ with a high selectivity of ca. 79.7% under visible irradiation.