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首页> 外文期刊>Separation and Purification Technology >Fabrication of p-NiO/n-TiO2 nano-tube arrays photoelectrode and its enhanced photocatalytic performance for degradation of 4-chlorphenol
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Fabrication of p-NiO/n-TiO2 nano-tube arrays photoelectrode and its enhanced photocatalytic performance for degradation of 4-chlorphenol

机译：P-NiO / N-TiO2纳米管阵列的制造光电极及其增强的光催化性能，降解4-氯苯酚

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摘要

In the study, we report that p-type NiO (p-NiO) nanoparticles were successfully decorated onto the of n-type TiO2 nano-tube arrays (n-TiO2 NTAs) photoelectrode by anodization process, followed by electrodeposition strategy in the presence of NiSO4 electrolyte. After then, the samples were studied by scanning electron microscope (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). In addition, the optical and photoelectrochemical (PECH) properties of p-NiO/n-TiO2 NTAs were recorded through ultraviolet-visible diffuse reflectance spectroscopy (UV-vis DRS), open circuit potential (OCP) and electrochemical impedance spectroscopy (EIS) curves, respectively. Furthermore, We evaluated the photocatalytic (PC) degradation of 4-chlorphenol and the enhanced PC mechanism was also discussed. Results suggest that p-NiO/n-TiO2 NTAs photoelectrode exhibited higher PC activities than that of pristine TiO2 NTAs owing to its higher photogeneration electrons-holes (e/h(+)) pairs separation efficiency and light absorbance. As a consequence, the p-NiO/n-TiO2 NTAs photoelectrode could be applied in degradation of organic pollutants and wastewater purification. (C) 2017 Elsevier B.V. All rights reserved.
机译：在该研究中，我们通过阳化过程将P型NIO（P-NIO）纳米颗粒成功地装饰到N型TiO2纳米管阵列（N-TiO2 NTAS）光电极上，然后在存在下进行电沉积策略NISO4电解质。然后，通过扫描电子显微镜（SEM），X射线衍射（XRD）和X射线光电子谱（XPS）研究样品。此外，通过紫外线可见漫反射谱（UV-VIS DRS），开路电位（OCP）和电化学阻抗光谱（EIS）曲线记录P-NIO / N-TiO2 NTA的光学和光电化学（PECH）性能， 分别。此外，我们评估了光催化剂（PC）4-氯苯酚的降解，还讨论了增强的PC机制。结果表明，由于其较高的光生电电子孔（E / H（+））对分离效率和光吸收，P-NiO / N-TiO2 NTAS光电极比原始TiO2 NTA更高的PC活性。结果，P-NiO / N-TiO2 NTA光电电极可用于有机污染物和废水纯化的降解。 （c）2017 Elsevier B.v.保留所有权利。

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  • 作者

    Deng Xiaoyong; Zhang Huixuan; Ma Qiuling; Cui Yuqi; Cheng Xiuwen; Li Xiaoli; Xie Mingzheng; Cheng Qingfeng;

  • 作者单位

    Lanzhou Univ Coll Earth &

    Environm Sci Minist Educ Key Lab Western Chinas Environm Syst Lanzhou 730000 Gansu Peoples R China;

    Lanzhou Univ Coll Earth &

    Environm Sci Minist Educ Key Lab Western Chinas Environm Syst Lanzhou 730000 Gansu Peoples R China;

    Lanzhou Univ Coll Earth &

    Environm Sci Minist Educ Key Lab Western Chinas Environm Syst Lanzhou 730000 Gansu Peoples R China;

    Lanzhou Univ Coll Earth &

    Environm Sci Minist Educ Key Lab Western Chinas Environm Syst Lanzhou 730000 Gansu Peoples R China;

    Lanzhou Univ Coll Earth &

    Environm Sci Minist Educ Key Lab Western Chinas Environm Syst Lanzhou 730000 Gansu Peoples R China;

    Lanzhou Univ Coll Earth &

    Environm Sci Minist Educ Key Lab Western Chinas Environm Syst Lanzhou 730000 Gansu Peoples R China;

    Lanzhou Univ Coll Earth &

    Environm Sci Minist Educ Key Lab Western Chinas Environm Syst Lanzhou 730000 Gansu Peoples R China;

    Chengdu Univ Informat Technol Coll Resources &

    Environm Chengdu 610225 Sichuan Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 分离过程;气化工艺;
  • 关键词

    p-NiO/n-TiO2 nano-tube arrays; Photoelectrode; Photoelectrocatalysis; 4-Chlorphenol;

    机译：P-NIO / N-TiO2纳米管阵列;光电极;光电偶分析;4-氯苯酚;

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