Enhanced visible-light-driven CO_(2) photoreduction into methanol using PtO/GdFeO_(3) nanocomposites  

作　　者：Ali Fawad Zaman Saeed Yimeng Sun Xu Zhang Feng Zhang Guodong Li Guangli Yu 

机构地区：[1]Key Laboratory of Photochemical Biomaterials and Energy Storage Materials,Heilongjiang Province and School of Chemistry and Chemical Engineering,Harbin Normal University,Harbin 150025,China [2]College of Chemistry,Liaoning University,Shenyang 110036,China [3]State Key Laboratory of Inorganic Synthesis and Preparative Chemistry,College of Chemistry,Jilin University,Changchun 130012,China [4]College of Chemical Engineering,Shenyang University of Chemical Technology,Shenyang 110142,China

出　　处：《Chinese Journal of Chemical Engineering》2025年第2期131-139,共9页中国化学工程学报(英文版)

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).

摘　　要：Herein,PtO-supported GdFeO_(3)(PtO/GdFeO_(3))composite photocatalysts were synthesized by a solution-based 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.

关 键 词：PtO/GdFeO_(3) CO_(2)photoreduction CH_(3)OH production Photogenerated charge carrier transport 

分 类 号：O643.3[理学—物理化学]