镍掺杂纳米ZnO的制备及在改性涤纶织物上的应用

Preparation of Ni/ZnO and its application on modified polyester fabric

以二水合乙酸锌和六水合氯化镍为原料,在碱性醇溶液中通过水浴法制备了镍掺杂纳米ZnO复合物。通过对亚甲基橙溶液(MO)作为有色污染物进行降解,研究了不同掺杂含量的纳米ZnO复合物对其光催化性能的影响。然后将制备的Ni/ZnO应用在改性涤纶织物上,采用红外光谱、紫外-可见吸收光谱、扫描电镜、XPS及XRD等对其进行表征,并测试Ni/ZnO复合物处理改性涤纶织物后的抗紫外线效果。结果表明,适量的Ni掺杂,能够进入ZnO内部,降低其禁带宽度,同时光响应范围向长波方向拓宽,且在经过处理的织物表面能明显观察到大量Ni/ZnO存在。与4%,5%,6%掺杂量的Ni/ZnO相比,3%Ni掺杂的纳米ZnO在λmax处的吸光度最低,对于甲基橙的降解率为81.2%,此掺杂ZnO对甲基橙水溶液的有较高的降解率,并呈现出较佳的光催化性能。同时,3%Ni/ZnO处理改性涤纶织物后的抗紫外线等级(UPF值)达到50+。

In this paper,C_4H_（10）O_6 Zn and Cl_2H_（12）NiO_6 were used as raw materials to prepare the compound Ni/ZnO in alkaline alcohol solution by water bath.The effect of different doping ratio on the photocatalytic performance was studied by regarding methyl orange as a colored contaminant.Then the prepared Ni/ZnO was applied to modified polyester fabric.Its structure and properties were characterized by infrared spectroscopy,DRS,ESEM,XPS and XRD.The UV resistance of the modified polyester fabrics treated with Ni/ZnO was tested.The results show that an appropriate amount of Ni doping can enter the interior of ZnO and reduce its band gap.At the same time,the range of light response was broadened to the long wave direction,and a large amount of Ni/ZnO can be obviously observed on the treated fabric surface.Compared with 4%,5%and 6% doping amount of Ni/ZnO,3% Ni/ZnO showed the lowest absorbance atλmax,and the degradation rate of methyl orange was 81.2%.The doped ZnO had a higher degradation rate to methyl orange and showed better photocatalytic properties.At the same time,the UV resistance（UPF value）of 3% Ni/ZnO modified terylene fabric reached 50＋.