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首页> 外文期刊>Applied Surface Science >Sb_2S_3/Sb_2O_3 modified TiO_2 photoanode for photocathodic protection of 304 stainless steel under visible light
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Sb_2S_3/Sb_2O_3 modified TiO_2 photoanode for photocathodic protection of 304 stainless steel under visible light

机译：Sb_2S_3 / Sb_2O_3改性TiO_2光电阳极在可见光下对304不锈钢的光阴极保护

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摘要

A series of Sb2S3/Sb2O3/TiO2 (SS/SO/T) composites with different reactant concentrations were synthesized via anodic oxidation and a one-pot hydrothermal method. The chemical compositions, morphologies, and optical absorption properties of prepared samples were characterized by X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, energy disperse spectroscopy, elemental mapping and ultraviolet-visible diffuse reflectance spectroscopy. Photocathodic protection performances of these samples were studied using time-dependent open circuit potential, time-dependent photoinduced current density, and photoinduced volt-ampere characteristic. The SS/SO/T composite with a 48 mmol/L antimony source exhibited optimal performance for 304 stainless steel (304SS). This excellent performance origins from the synergistic effect of the ternary system. The narrow band gap Sb2S3 promoted visible light harvesting. The p-n junction between p-type Sb2S3 and n-type SO/T provides a driving force for the separation and transfer of carriers. Well crystallized Sb2O3 rods offer a direct pathway for the carriers migration.
机译：通过阳极氧化和一锅水热法合成了一系列不同反应物浓度的Sb2S3 / Sb2O3 / TiO2（SS / SO / T）复合材料。通过X射线衍射，扫描电子显微镜，X射线光电子能谱，能量分散能谱，元素图谱和紫外可见漫反射谱来表征所制备样品的化学组成，形态和光吸收特性。使用随时间变化的开路电势，随时间变化的光感应电流密度和光感应伏安特性研究了这些样品的光阴极保护性能。具有48 mmol / L锑源的SS / SO / T复合材料对304不锈钢（304SS）表现出最佳性能。这种出色的性能源自三元系统的协同效应。窄带隙Sb2S3促进了可见光的收集。 p型Sb2S3和n型SO / T之间的p-n结为载流子的分离和转移提供了驱动力。结晶良好的Sb2O3棒为载流子迁移提供了直接途径。

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  • 来源
    《Applied Surface Science》 |2018年第31期|155-163|共9页
  • 作者

    Li Xinran; Wang Xiutong; Ning Xiaobo; Lei Jing; Shao Jing; Wang Wencheng; Huang Yanliang; Hou Baorong;

  • 作者单位

    Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China;

    Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China;

    Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China;

    Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China;

    Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China;

    Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China;

    Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China;

    Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Sb2S3/Sb2O3/TiO2; Cathodic protection; Stainless steel; Visible light;

    机译：Sb2S3 / Sb2O3 / TiO2;阴极保护;不锈钢;可见光;

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