In this article,we used RF magnetron sputtering to deposit ZnO seed layers on polyester fi-bers,and hydrothermally synthesize ZnO nanorod arrays on the seed layers.The photocatalytic activity of the samples was studied by degrading Rhodamine B under UV irradiation.The surface built-in electric field of the ZnO nanorod array was studied using surface photovoltage(SPV)spectroscopy.The photo-catalytic performance test results showed that after 180 minutes of reaction,the degradation rates of Rhodamine B in ZnO nanorod array/polyester sample and ZnO film/polyester sample were 81%and 33%respectively,indicating that the photocatalytic activity of ZnO nanorod array/polyester sample was significantly higher than that of ZnO film/polyester sample.SPV testing analysis shows that there is a strong built-in electric field on the surface of the ZnO nanorod array,which is directed from the nanorod body to the surface.The built-in electric field on the surface is conducive to the separation of photo gen-erated electrons and holes,thereby improving the efficiency of photocatalytic reactions on ZnO.
关键词
光催化/ZnO纳米棒阵列/涤纶织物/表面内建电场
Key words
photocatalysis/ZnO nanorod array/polyster fabric/surface built-in electric field
维普
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