A Constructed 2D-Cu2O/Carbon Nitride Heterojunction for Efficient CO2 Photoreduction to CH4

作者：Jialiang Liu, Xiaoxuan Zhang, Jiaxuan Gao, Xuanhe Liu · 发表于：C – Journal of Carbon Research · 年份：2026 · DOI：10.3390/c12010006 · 被引用次数：1 · 研究领域：Advanced Photocatalysis Techniques、TiO2 Photocatalysis and Solar Cells、CO2 Reduction Techniques and Catalysts

With the dual challenges of global energy scarcity and worsening environmental issues, the efficient and selective conversion of CO2 into CH4-an environmentally friendly fuel with high energy density—offers considerable application potential. In this study, a 2D-Cu2O/carbon nitride (2D-Cu2O/CN) heterojunction catalyst was successfully prepared. Notably, 2D-Cu2O/CN shows enhanced light absorption capacity, reduced charge-transfer resistance, and efficient separation of photogenerated electron–hole pairs. It exhibits a CH4 yield of 14.1 μmol·g−1·h−1, 4-fold higher than that of CN. This study provides a feasible approach for the design of high-efficiency photocatalysts for CO2 reduction to CH4.