Cu2O/rGO光催化剂的结构及其光催化降解染料性能

Structure and Photocatalytic Dye Degradation ofCu2O/rGO Photocatalysts

采用有机酸辅助调控和低温液相沉淀法制备氧化亚铜/还原氧化石墨烯(Cu2O/rGO)光催化剂,采用FTIR、FESEM、拉曼光谱和XRD对其结构进行了表征,研究了Cu2O/rGO光催化剂光降解甲基橙染料性能和循环再生利用性能。结果表明:改性后的Cu2O/rGO光催化剂对甲基橙染料的第一次光催化降解率为98.3%,第五次光催化降解率仍达86.2%。XRD表明Cu2O/rGO光催化剂主要成分为高结晶度和高纯度的氧化亚铜,FTIR初步表明Cu2O/rGO光催化剂具有还原氧化石墨烯和Cu2O的特征吸收峰。拉曼光谱表明Cu2O/rGO光催化剂具有还原氧化石墨烯的成分和结构。FESEM表明Cu2O/rGO光催化剂具有多孔结构,粒径为40-60nm的氧化亚铜粒子沉积在层状或片状还原氧化石墨烯表面。

Cuprous oxide/reduced graphene(Cu2O/rGO) photocatalyst was prepared by organic acid-assisted regulation and low-temperature liquid phase precipitation method. Structure of Cu2O/rGO photocatalysts were characterized by FTIR, FESEM, Raman and XRD. The results showed that the photocatalytic degradation of methyl orange dye by Cu2O/rGO was 98.3% at the first time and 86.2% at the fifth time. XRD indicated that Cu2O/rGO photocatalyst was mainly composed of cuprous oxide with high crystallinity and high purity. FTIR preliminarily indicated that Cu2O/rGO photocatalyst had characteristic absorption peaks of reduced graphene and Cu2O. Raman spectrum indicated that Cu2O/rGO photocatalyst had the composition and structure of reduced graphene. FESEM demonstrated that Cu2O/rGO photocatalyst had porous structure, and Cu2O particles with particle size of 40-60 nm were deposited on the surface of reduced graphene in layers or sheets.