La2CoFeO6竹节状中空纳米纤维的制备及其光催化性能

采用静电纺丝法制得La₂CoFeO₆竹节状中空纳米纤维光催化材料。La₂CoFeO₆纳米纤维具有稳定的一维结构, 由菱形晶型的La₂CoFeO₆纳米颗粒相互连接组成, 并存在明显的竹节状中空结构, 其比表面积可达98.7 m²/g。La₂CoFeO₆纳米纤维对自然光具有较高的利用率, 其禁带宽度为1.6 eV。在甲基橙溶液浓度为10 mg/L, pH为2, 催化剂用量为1.5 g/L条件下, 自然光光照2 h后, La₂CoFeO₆纳米纤维对甲基橙的降解率可达96.9%。

Preparation and Photocatalytic Properties of La2CoFeO6 Bamboo-like Hollow Nanofibers

La₂CoFeO₆ bamboo-like hollow nanofibers photocatalytic material was successfully prepared by electrostatic spinning. La₂CoFeO₆ nanofibers, which were connected to each other by rhombic La₂CoFeO₆ nanoparticles, had stable one-dimensional structure and clear bamboo-like hollow structure. The specific surface area of as-prepared inorganic nanofibers reached 98.7 m²/g. La₂CoFeO₆ nanofibers had a high utilization for natural light and its band gap was 1.6 eV. When concentration of methyl orange was 10 mg/L with pH of 2 and the dosage of La₂CoFeO₆ nanofibers was 1.5 g/L, methyl orange was degraded by La₂CoFeO₆ nanofibers within 2 h under natural light at 96.9%.