LaNixFe1-xO3钙钛矿光催化降解碱性品红

Photocatalytic Degradation of Basic Fuchsine by LaNixFe1-xO3 Perovskite

通过溶胶-凝胶法控制合成一系列掺杂型LaNixFe1-xO3(x=0.1,0.3,0.5,0.7,0.9)钙钛矿材料,研究其在氙灯条件下对碱性品红降解的效果并解析其降解机理。结合X射线衍射(XRD)、扫描电镜(SEM)、光电子能谱(XPS)等分析测试与光催化降解评价结果,探究复合氧化物的结构性能与催化效能。研究发现,该LaNixFe1-xO3材料在降解碱性品红溶液时均具有良好效果,其中LaNi0.9Fe0.1O3催化效果最好,当Ni的掺杂量较高时具有更大的比表面积,暴露更多的活性位点,催化剂表面含有更多吸附氧O-/O-2物种,有利于降解碱性品红分子,降解率可达到97%,且有稳定高效的重复利用率。

A series of doped perovskite materials of LaNi x Fe 1- x O 3 ( x =0.1,0.3,0.5,0.7, 0.9)were synthesized by sol-gel method. The effect of LaNi x Fe 1- x O 3 on the degradation of basic fuchsin under xenon lamp was studied and its degradation mechanism was analyzed. Combined with X-ray diffraction (XRD), scanning electron microscopy (SEM), photoelectron spectroscopy (XPS) and photocatalytic degradation evaluation results, the structural properties and catalytic performance of the composite oxide were investigated. It is found that the series of perovskite LaNi x Fe 1- x O 3 materials have certain catalytic effects when degrading basic fuchsin solution. LaNi 0.9 Fe 0.1 O 3 material has the best catalytic effect, the degradation rate can reach 97%, and it has a stable and efficient reuse efficiency. This is because when the doping amount of Ni is higher, the specific surface area is larger, and more active sites are exposed, and the catalyst surface contains more adsorbed oxygen O -/O 2 - species, which is beneficial to the degradation of basic fuchsin molecules.