LaFeO_(3)制备及光催化产氢性能分析  

Preparation and Photocatalytic Hydrogen Production of LaFeO_(3)

作　　者：张维锦 马永祥 ZHANG Wei-jin;MA Yong-xiang(Laboratory of Material Design and Quantum Simulation,Changchun 130022,China)

机构地区：[1]长春大学材料设计与量子模拟实验室,吉林长春130022

出　　处：《化工管理》2021年第33期60-61,共2页Chemical Engineering Management

基　　金：吉林省教育厅“十三五”科学技术项目JJKH20200563KJ。

摘　　要：为了研究LaFeO_(3)制备及光催化产氢的性能,文章以硝酸镧和硝酸铁为原料,柠檬酸为络合剂,利用溶胶凝胶法制备了钙钛矿结构的纳米LaFeO_(3),并分析了其性能。结果表明:制备的LaFeO_(3)具有完好的钙钛矿型结构粒子,大小均匀,其粒径为40 nm左右,表面上Fe3+和Fe2+共存且活性吸附氧占58%。通过紫外光的激发LaFeO_(3)上发生光分解水产氢反应,其平均产氢速率达到720μmol·h^(-1)·g^(-1),催化剂表面的电子密度最大并具有最高的产氢效率。In order to study the properties of LaFeO_(3)preparation and photocatalytic hydrogen production,perovskite nano LaFeO_(3)was prepared by sol-gel method using lanthanum nitrate and ferric nitrate as raw materials and citric acid as complexing agent,and its properties were analyzed.The results show that the prepared LaFeO_(3)has perfect perovskite structure particles,the size is uniform,the particle size is about 40 nm,Fe3+and Fe2+coexist on the surface,and the active adsorbed oxygen species account for 58%.The photolysis of aquatic hydrogen on LaFeO_(3)excited by ultraviolet light,with an average hydrogen production rate of 720μmol·h^(-1)·g^(-1),the electron density on the surface of the catalyst is the largest and has the highest hydrogen production efficiency.

关 键 词：LaFeO_(3) 柠檬酸络合法 光催化产氢 

分 类 号：O643.36[理学—物理化学] TQ116.21[理学—化学]