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1. 常州大学 怀德学院,江苏 常州,213016
2. 江苏理工学院 材料工程学院, 江苏 常州 213001
3. 常州大学 数理学院,江苏 常州,213164
纸质出版日期:2017-7-5,
收稿日期:2016-12-12,
修回日期:2017-1-21,
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何祖明, 夏咏梅, 唐斌等. ZnO/Cu<sub>2</sub>O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
HE Zu-ming, XIA Yong-mei, TANG Bin etc. Preparation and Photocatalytic Property of ZnO/Cu<sub>2</sub>O Heterostructured Nanorod Arrays[J]. Chinese Journal of Luminescence, 2017,38(7): 936-943
何祖明, 夏咏梅, 唐斌等. ZnO/Cu<sub>2</sub>O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 DOI: 10.3788/fgxb20173807.0936.
HE Zu-ming, XIA Yong-mei, TANG Bin etc. Preparation and Photocatalytic Property of ZnO/Cu<sub>2</sub>O Heterostructured Nanorod Arrays[J]. Chinese Journal of Luminescence, 2017,38(7): 936-943 DOI: 10.3788/fgxb20173807.0936.
利用湿化学法在FTO玻璃基底上制备了高度规整的ZnO纳米棒阵列(ZnO NRAs),以此为衬底,采用磁控溅射法在ZnO NRAs表面沉积Cu
2
O薄膜。分别用X射线衍射仪、X射线光电子能谱、扫描电镜、光致光谱、紫外可见分光光度计和电化学工作站对样品的物相、形貌、吸收光谱、光电性能进行了表征,用甲基橙(MO)模拟有机物废水研究复合材料的光催化性能。结果表明:ZnO纳米棒为六方纤锌矿结构,其直径约为80~100 nm,长约2~3 m,棒间距约100~120 nm。立方晶系的Cu
2
O颗粒直径约为100~300 nm,形成致密膜层并紧密覆盖在ZnO NRAs表面上,构成ZnO/Cu
2
O异质结纳米阵列(ZnO/Cu
2
O HNRAs)结构。与纯ZnO NRAs和Cu
2
O相比,ZnO/Cu
2
O HNRAs在可见光范围内的吸收显著增强,吸收波长向可见光方向偏移。ZnO/Cu
2
O HNRAs的载流子传递界面的电荷转移速度快,有效促进了光生电子和空穴的分离。在紫外-可见光照射65 min后, ZnO/Cu
2
O HNRAs的降解效率为94%,分别是纯ZnO NRAs和Cu
2
O的18倍和1.7倍。
ZnO nanorod arrays (ZnO NRAs) on FTO-glass substrates were prepared by chemical method
then Cu
2
O film was deposited on ZnO NRAs surface by using magnetron sputtering method. The crystal phase
morphology
UV-Vis absorbance spectra and photoelectric property were characterized by X-ray diffraction
X-ray photoelectron spectroscope
scanning electron microscopy
photoluminescence spectroscopy
UV-Vis spectrophotometer and electrochemical workstation
respectively. 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 2-3 m
and rod interval distance of 100-120 nm. Cu
2
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/Cu
2
O heterojunction nanorod arrays(ZnO/Cu
2
O HNRAs) structure. Compared with pure ZnO NRAs and Cu
2
O film
the absorption intensity in the visible region of ZnO/Cu
2
O HNRAs is significantly enhanced and the absorption wavelength redshifts. The charge transfer speed on the carrier transmission interface of ZnO/Cu
2
O HNRAs is faster
contributing to the separation of photoelectrons from hole. Irradiated under UV-Vis light for 65 min
the MO degradation efficiency of ZnO/Cu
2
O HNRAs is 94%
18 times than that of pure ZnO NRAs and 1.7 times than that of pure Cu
2
O film.
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
ZnO NRAsZnO/Cu2O HNRAsphotoelectrochemical propertiesphotocatalysis
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