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采用光还原法制备了Ag/ZnO光催化剂,并运用紫外-可见光谱、X射线衍射、扫描电子显微镜和透射电子显微镜对催化剂进行表征。以甲基橙为标志物,探究了催化剂的投加量和甲基橙的初始浓度对光催化反应性能的影响。结果表明:Ag~+成功的进入了ZnO晶格中,取代了部分Zn~(2+)。光催化降解反应表明,Ag/ZnO都能够提高光催化效率,当催化剂用量为1.2g/L,光照30min,可以使0.01g/L的甲基橙溶液降解率达到92.259%。
Ag / ZnO photocatalysts were prepared by photoreduction. The catalysts were characterized by UV-Vis, X-ray diffraction, scanning electron microscopy and transmission electron microscopy. Methyl orange as a marker, to explore the amount of catalyst and methyl orange initial concentration of photocatalytic reaction performance. The results show that Ag ~ + successfully enters the ZnO lattice and replaces some Zn2 +. Photocatalytic degradation reaction showed that Ag / ZnO could improve the photocatalytic efficiency. When the amount of catalyst was 1.2g / L, light irradiation for 30min, the degradation rate of methyl orange solution of 0.01g / L could reach 92.259%.