石墨烯负载TiO2-NX/Cu2O复合光催化剂制备

Study on preparation of graphene load TiO2-NX/Cu2O composite photocatalyst

以氯化铜为铜源,通过盐酸羟胺还原法制备氧化亚铜;以无水乙醇为溶剂,钛酸异丙酯为钛源,盐酸胍为氮源,石墨烯为载体,通过溶胶-凝胶法制备氮掺杂纳米TiO2以及石墨烯负载TiO2-NX/Cu2O复合光催化剂。采用氙光灯为光源,研究了该催化剂对甲基橙的光降解催化活性,讨论了材料制备过程中质量比和光催化剂添加量对光降解甲基橙活性的影响。实验结果表明,制备的石墨烯负载TiO2-NX/Cu2O复合光催化剂在m(TiO2-NX)∶m(Cu 2O)=1∶1的情况下,负载到0.08g石墨烯于100 min后对甲基橙的降解率可达到83.3%。

In this thesis,taking copper chloride as a copper source,the cuprous oxide was prepared by hydroxylamine hydrochloride reduction.Taking ethanol as the solvent,isopropyl titanate as a titanium source,guanidine hydrochloride as the nitrogen source,graphene as the carrier,nitrogen-doped nano-TiO2 and graphene to load TiO2-NX/Cu2O composite is prepared by sol-gel.Xenon light which acts as the light source is to used to study the catalytic activity of the catalyst degradation of methyl orange light.This paper also discussed that mass ratio and the addition of catalyst have an important effect on light degradation of methyl orange activity during the preparation of photocatalyst.The experimental results show that in preparation of loaded TiO2-NX/Cu2O composite photocatalyst of TiO2-NX∶of Cu 2O=1∶1,degradation rate of methyl orange could reach 83.3%from 0.08 g loaded graphne for 100 min.