<strong>CuO/ZnO</strong>复合光催化剂的制备和性能

doi:10.11901/1005.3093.2019.146

材料研究学报

2019, Vol. 33

Issue (10): 728-734 DOI: 10.11901/1005.3093.2019.146

研究论文

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CuO/ZnO复合光催化剂的制备和性能

谢亮¹,王平¹,李之锋¹(

),刘德红¹,吴瑛²

1. 江西理工大学材料科学与工程学院赣州 341000
2. 浙江纳巍负离子科技有限公司杭州 310000

Hydrothermal Synthesis and Photocatalytic Activity of CuO/ZnO Composite Photocatalyst

XIE Liang¹,WANG Ping¹,LI Zhifeng¹(

),LIU Dehong¹,WU Ying²

1. School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
2. Zhejiang NAVIION Technology Co. , Ltd, Hangzhou 310000, China

引用本文:

谢亮,王平,李之锋,刘德红,吴瑛. CuO/ZnO复合光催化剂的制备和性能[J]. 材料研究学报, 2019, 33(10): 728-734.
Liang XIE, Ping WANG, Zhifeng LI, Dehong LIU, Ying WU. Hydrothermal Synthesis and Photocatalytic Activity of CuO/ZnO Composite Photocatalyst[J]. Chinese Journal of Materials Research, 2019, 33(10): 728-734.

全文: PDF(4745 KB) HTML

摘要:

以十六烷基三甲基溴化铵为生长调节剂用一步水热法合成了纳米CuO/ZnO复合光催化剂。采用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、X 射线光电子能谱仪(XPS)、荧光光谱仪(FL)和紫外-可见光谱仪(UV-Vis)等手段对其表征，在紫外光照射下研究了不同CuO配比的复合光催化剂对目标降解物甲基橙的光催化效果和循环稳定性。结果表明，CuO/ZnO复合光催化剂主要由CuO纳米颗粒和ZnO纳米片组成；引入适量的CuO可调节ZnO 的光吸收性能，提高紫外光催化效率；过量(?7%)的CuO抑制ZnO的紫外光催化效率；CuO/ZnO在光催化过程中具有良好的稳定性。

关键词 ：复合材料, CuO/ZnO, 光催化, 甲基橙

Abstract：

Nanocomposites of CuO/ZnO were synthesized with cetyltrimethylammonium bromide as a growth regulator by one-step hydrothermal method. The catalyst was characterized by X-ray diffractometry (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), fluorescence spectrometer (FL) and UV-Vis spectrometer (UV-Vis). The photocatalytic effect of the composite photocatalyst with different ratios of CuO to ZnO on the degradation efficiency of methyl orange under ultraviolet light irradiation, and the cyclic stability of the composite photocatalyst were investigated. The results show that CuO/ZnO photocatalysts are mainly composed of CuO nanoparticles and ZnO nanosheets. The proper amount of CuO can effectively adjust the light absorption performance of ZnO and enhance the efficiency of ultraviolet photocatalysis. Excess CuO (?7%) has inhibitory effect on ZnO ultraviolet catalytic efficiency. CuO/ZnO has good stability in the photocatalytic process.

Key words： composites CuO/ZnO photocatalysis methyl orange

收稿日期: 2019-03-11

ZTFLH:

O644

基金资助:国家自然科学基金(53173104);江西省科技计划项目(20141BBE50019);江西省教育厅项目(GJJ160602)

作者简介: 谢亮，男，1993年生，硕士生

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https://www.cjmr.org/CN/10.11901/1005.3093.2019.146 或 https://www.cjmr.org/CN/Y2019/V33/I10/728

图1 纯 ZnO、CuO/ZnO和CuO的XRD谱

图2 5%CuO/ZnO的SEM照片和EDS元素分布

图3 空白实验和光催化材料在紫外光辐照下对甲基橙的降解曲线和相应的表观一阶线性拟合曲线

图4 CuO、ZnO和CuO/ZnO的紫外可见吸收光谱和(αhν)2与(hν)的关系

图5 5%CuO/ZnO的光降解循环稳定性

图6 纯ZnO和CuO/ZnO的光致发光光谱

图7 5%CuO/ZnO的XPS全谱以及Zn2p、Cu2p和O1s轨道的XPS窄谱

图 8 CuO/ZnO 复合光催化剂的机理

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