铁酸钴纤维负载银/氯化银纳米粒子的合成及其对甲基橙的光催化降解

Synthesis of Ag/AgCl nanoparticles immobilized on CoFe2O4 fibers and their photocatalytic degradation for methyl orange

摘要:

通过温和的湿化学合成法将Ag/AgCl纳米粒子固载于CoFe₂O₄纤维表面,固载银/氯化银纳米粒子的量可控。利用X射线衍射,扫描电子显微镜和电子显微镜等技术对制备的Ag/AgCl@CoFe₂O₄组成、形貌等进行了表征。以甲基橙的降解脱色为模型反应,考察了Ag/AgCl纳米粒子的不同负载量对催化性能的影响。实验结果表明：AAC-4型固载纤维光催化剂展示出比其它类型固载光催化剂以及单纯Ag/AgCl纳米粒子更高的光催化性能,可使甲基橙溶液60min的脱色率达98.2%,且Ag/AgCl纳米粒子在CoFe₂O₄纤维表面的固载 促进了光催化剂催化效率和催化稳定性的提升。

Abstract:

In this work, Ag/AgCl nanoparticles are immobilized onto the as-prepared CoFe₂O₄ fibers by a facile synthesis method. The amount of Ag/AgCl nanoparticles immobilized onto CoFe₂O₄ fibers can be tuned. The as-synthesized Ag/AgCl@CoFe₂O₄ composite fibers are characterized by XRD, FESEM and EM, and employed to degradate MO (Methyl Orange) dye in wastewater under visible light. The results show that AAC-4 fiber exhibits higher efficiency for the degradation of the MO dye under visible light illumination than other Ag/AgCl@CoFe₂O₄ composite fibers or pure Ag/AgCl sample, and the decolorizing efficiency of MO can research 98.2%. The immobilization of Ag/AgCl nanoparticles onto CoFe₂O₄ fiber promotes the enhancement of photocatalytic efficiency and stability.