发光学报2017，Vol.38Issue(7)：936-943,8.DOI:10.3788/fgxb20173807.0936
ZnO/Cu2O异质结纳米阵列制备及光催化性能
Preparation and Photocatalytic Property of ZnO/Cu2 O Heterostructured Nanorod Arrays
摘要
Abstract
ZnO nanorod arrays ( ZnO NRAs ) on FTO-glass substrates were prepared by chemical method, then Cu2O film was deposited on ZnO NRAs surface by using magnetron sputtering method. The crystal phase, morphology, UV-Vis absorbance spectra and photoelectric property were charac-terized by X-ray diffraction, X-ray photoelectron spectroscope, scanning electron microscopy, photo-luminescence spectroscopy, UV-Vis spectrophotometer and electrochemical workstation, respective-ly. The photocatalytic activity was evaluated by the photocatalytic degradation of methyl orange ( MO) under UV-Vis light irradiation. The results show that ZnO NRAs are wurtzite structure phase with diameter of 80-100 nm, length of 2-3μm, and rod interval distance of 100-120 nm. Cu2 O particles are the cubic phase with grain diameter of 100-300 nm and form a dense membrane layer on ZnO NRAs, which constitutes ZnO/Cu2 O heterojunction nanorod arrays ( ZnO/Cu2 O HNRAs ) structure. Compared with pure ZnO NRAs and Cu2 O film, the absorption intensity in the visible region of ZnO/Cu2 O HNRAs is significantly enhanced and the absorption wavelength redshifts. The charge transfer speed on the carrier transmission interface of ZnO/Cu2 O HNRAs is faster, contribu-ting to the separation of photoelectrons from hole. Irradiated under UV-Vis light for 65 min, the MO degradation efficiency of ZnO/Cu2 O HNRAs is 94%, 18 times than that of pure ZnO NRAs and 1. 7 times than that of pure Cu2 O film.关键词
ZnO纳米棒阵列/ZnO/Cu2O异质结纳米棒阵列/光电化学性能/光催化Key words
ZnO NRAs/ZnO/Cu2 O HNRAs/photoelectrochemical properties/photocatalysis分类
化学化工引用本文复制引用
何祖明,夏咏梅,唐斌,江兴方,黄正逸..ZnO/Cu2O异质结纳米阵列制备及光催化性能[J].发光学报,2017,38(7):936-943,8.基金项目
国家自然科学基金(61107055) （61107055）
江苏省高校自然科学研究面上项目(15KJD430004)资助 Supported by National Natural Science Foundation of China ( 61107055 ) （15KJD430004）
General Project of Natural Science Research of The Universities of Jiangsu Province(15KJD430004) （15KJD430004）
