传感器用Ag/Ni基Ag3PO4/CNTs复合膜组织表征及光催化性能分析  

The microstructure and photocatalytic properties of Ag/Ni-based Ag3PO4/CNTs composite membrane

作　　者：温炳辉[1] WEN Bing-hui(Department of Equipment Engineering,Henan Vocational College of Architecture,zhengzhou 450067,China)

机构地区：[1]河南建筑职业技术学院设备工程系,河南郑州450067

出　　处：《粉末冶金工业》2020年第2期46-49,共4页Powder Metallurgy Industry

摘　　要：通过电化学方法在Ni基体上沉积制备得到传感器用Ag/Ni基Ag3PO4/CNTs复合膜,并测试可见光下复合膜光催化活性及稳定性。结果表明:复合膜形成了由CNTs和Ag3PO4共同构成的网状结构,CNTs对网状结构起到良好的支撑作用,使复合膜获得更好的稳定性。Ag3PO4/CNTs复合膜形成了Ag3PO4衍射峰,而峰强度发生了略微降低。较Ag3PO4膜而言,复合膜达到了更优的紫外与可见光区吸光性能,有效促进光催化反应的进行。在保证复合膜稳定光催化活性的条件下,复合膜可以进行5次连续使用。使用叔丁醇时,降解率相对于未加捕获剂的系统减小。在体系中加入乙二胺四乙酸之后降解率明显降低。Ag/Ni-based Ag3PO4/CNTs composite films for sensors were prepared by electrochemical deposition on nickel matrix,and their photocatalytic activity and stability were tested under visible light. The results show that the composite membrane form a network structure composed of CNTs and Ag3PO4,and CNTs can play a good supporting role to the network structure and make the composite membrane obtain better stability. A characteristic peak of CNTs with high strength is formed in the composite film,and there is a strong interaction between CNTs and Ag3PO4. Compared with Ag3PO4 film,the composite film has better light absorption performance in the ultraviolet and visible regions,and effectively promotes the photocatalytic reaction. The composite membrane can be used continuously for 5 times under the condition of stable photocatalytic activity. Compared with the system without capture agent,the degradation rate of the system with tert-butanol decrease,and that with the addition of ethylenediamine tetra acetic acid decrease significantly.

关 键 词：Ag/Ni基Ag3PO4/CNTs复合膜 电化学沉积 光催化 反应机制 

分 类 号：TB383.2[一般工业技术—材料科学与工程] O643.36[理学—物理化学] O644.1[理学—化学]