摘要
Herein,PtO-supported GdFeO_(3)(PtO/GdFeO_(3))composite photocatalysts were synthesized by a solutionbased technique.Extensive analysis using various analytical instruments has shown that PtO plays a crucial function in augmenting the visible light absorption capacity of composites.Better photogenerated charge carrier transport was credited with this improvement,which led to a decrease in bandgap energy as low as 2.14 eV.The PtO/GdFeO_(3) nanocomposites showed remarkable photocatalytic activity when exposed to visible light,especially in the conversion of CO_(2) into CH_(3)OH.After 9 h of light,a noteworthy yield of 1550μmol·g^(−1) of methanol was produced,demonstrating maximum efficiency at a dose of 2.0 g·L^(−1) and a concentration of 5.0%PtO/GdFeO_(3).This yield indicates the effectiveness of the heterostructure,which outperformed pristine GdFeO_(3) by a factor of 7.85.This significant enhancement highlights the potential advantages of the modified structure in improving performance.Most significantly,the photocatalyst's durability maintained 98.0%of its initial efficacy throughout five cycles.The success of PtO/GdFeO_(3) is largely due to the synergistic light absorption capabilities and enhanced photocharge carrier separation that the integration of PtO produced.It highlights the conversion of CO_(2) into valuable chemicals under visible light exposure,as well as the promise of mixed oxide nanostructures in ecologically responsible material creation.
基金
support from National Natural Science Foundation of China(21771047)
Natural Science Foundation of Heilongjiang Province,China(YQ2020E029)
Open Project of State Key Laboratory of Inorganic Synthesis&Preparative Chemistry,Jilin University(2023-17).
