PANI载的孔状g-C3N4的界面聚合法制备与光催化性能研究

摘要

Polyaniline (PANI) was successfully loaded on porous graphitic carbon nitride (porous g-C3N4) by in-terfacial polymerization of aniline monomers. The structure, morphology and properties of the prepared samples were characterized by XRD, FTIR, SEM, TGA, UV-Vis and Electrochemical Impedance Spectroscope (EIS). Photocatalytic degradation of methylene blue was investigated to determine the photoactivity of the catalyst. The porous g-C3N4 showed good dispersion and interfacial adhesion to PANI, which improved the photocatalytic deg-radation of methylene blue and thermal stability. The improved photocatalytic activity could be attributed to the improved visible light utilization, oxidation power and electron transport property.%在孔状石墨型氮化碳(g-C3N4)存在下，通过苯胺单体的界面聚合成功制备了孔状 g-C3N4/聚苯胺(PANI)复合催化剂。采用 XRD、FTIR、SEM、TGA、UV-Vis 和电化学阻抗谱等对样品的结构、形貌、性能以及可见光催化降解亚甲基蓝的催化活性进行表征。结果表明： PANI组装在孔状g-C3N4片上，此种复合结构不仅利于孔状g-C3N4对PANI链段运动的限制，提高孔状g-C3N4/PANI复合催化剂的稳定性；而且增强材料的可见光利用率、氧化能力和电子输运性能，利于可见光催化性能的改善。