金属网表面ZnO纳米棒的可控制备及其光催化性能

Controllable fabrication and photocatalytic performance of ZnO nanorods on steel mesh

采用晶种诱导法,以硝酸锌为前驱体在金属网表面成功制备ZnO纳米棒光催化材料,用XRD、SEM等进行表征,并采用甲基橙溶液模拟废水,研究该材料的光催化降解性能。探讨了水浴合成ZnO纳米棒时,生长液浓度、反应温度等因素对光催化性能的影响。结果表明,80℃水浴反应4h,生长溶液浓度为100mmol/L,制备得到的ZnO纳米棒光催化活性较佳,光催化反应2h甲基橙溶液的降解率可达99%。

ZnO nanorods have been successfully synthesized through a simple seed-induced method on steel mesh substrates.The surface morphology of these samples was characterized by SEM and XRD.Photocatalytic degra-dation performance of the obtained materials was studied with methyl orange solution as model wastewater,and the effects of growth conditions on the photocatalytic degradation property were discussed in detail.The results showed that the ZnO nanorods exhibited the excellent photocatalytic activity while the concentration,tempera-ture and the growth time were 100 mmol/L,80 ℃ and 4 h respectively.The degradation rate of methyl orange solution could reach 9 9% over 2 h and the samples had good reusability.