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Engineered Zr/Zn/Ti oxide nanocomposite coatings for multifunctionality

机译：用于多功能性的工程化Zr / Zn / Ti氧化物纳米复合涂层

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摘要

Engineering metal oxides to achieve highly desirable properties can allow for multifunctionality and simultaneously enable antibacterial, anticorrosion, antireflection, and self-cleaning (A(3)S) potentials on a single surface. This study elucidates the improvements on the properties of ultrathin coating deposited using RF sputtering from optimized mechanically milled nanocomposites of zirconium dioxide (ZrO2), zinc oxide (ZnO), and titanium dioxide (TiO2), - Z(2)T. Optimizing the compositions, synthesis, and sputtering parameters reflected the improvements in the individual metal oxides' properties. The bandgap of sputter-coated nanocomposite films showed a red-shift, from 3.70 to 3.54 eV with varying Zr rich to Zr poor compositions, suggesting its antireflecting potential application layer in solar cells. The photocatalytic studies using TiO2 rich nanocomposite samples showed higher degradation efficiency of 89% under visible light, implying good antibacterial property on E-coli. Electrochemical impedance spectroscopy (EIS) analysis using a 3.5% NaCl solution demonstrated that Z(2)T films sputtered on stainless steel substrates produce an excellent protective anti-corrosion coating with a phase angle around -82 degrees. The water contact angle measurements supported the superior hydrophobic feature as self-cleaning by repelling the impurities. Furthermore, density functional theory calculations complemented the experimental results. Thus, engineered Z(2)T nanocomposites can pave the way to design multifunctional coatings/ alloys for unprecedented applications.
机译：为了实现高度理想的性能，可以允许多功能，同时能够在单个表面上允许多功能，同时能够进行抗菌，防腐，抗反射和自清洁（A（3））电位。该研究阐明了使用RF溅射从二氧化锆（ZrO2），氧化锌（ZnO）和二氧化钛（TiO 2）， - Z（2）T的优化机械研磨纳米复合材料沉积的超薄涂层性能的改善。优化组合物，合成和溅射参数反映了各种金属氧化物性质的改善。溅射涂覆的纳米复合膜的带隙显示出红移，从3.70至3.54eV，与富含Zr差的Zr差的组合物，表明其在太阳能电池中的抗反射潜在应用层。使用TiO 2富含纳米复合材料样品的光催化研究表明，可见光下的降解效率为89％，暗示e-Coli上的良好抗菌性质。使用3.5％NaCl溶液的电化学阻抗光谱（EIS）分析证明，在不锈钢基板上溅射的Z（2）T膜产生优异的保护性防腐蚀涂层，其相角在-82度左右。通过排斥杂质，水接触角测量支持优异的疏水性，作为自清洁。此外，密度功能理论计算补充了实验结果。因此，工程化Z（2）T纳米复合材料可以铺平道路设计用于前所未有的应用的多功能涂层/合金。

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  • 来源
    《Applied Surface Science》 |2021年第15期|150353.1-150353.17|共17页
  • 作者

    Velumani S.; Regmi G.; Lee Minho; Castaneda H.; Kuttolamadom Mathew; Qian Xiaofeng; Kassiba A.;

  • 作者单位

    Inst Politecn Nacl CINVESTAV IPN Ctr Invest & Estudios Avanzados Dept Elect Engn SEES Ave IPN 2508 Mexico City DF 07360 Mexico|Texas A&M Univ Dept Mat Sci & Engn College Stn TX 77843 USA;

    Inst Politecn Nacl CINVESTAV IPN Ctr Invest & Estudios Avanzados Dept Elect Engn SEES Ave IPN 2508 Mexico City DF 07360 Mexico;

    Texas A&M Univ Dept Mat Sci & Engn College Stn TX 77843 USA;

    Texas A&M Univ Dept Mat Sci & Engn College Stn TX 77843 USA;

    Texas A&M Univ Dept Mfg & Mech Engn Technol College Stn TX 77843 USA;

    Texas A&M Univ Dept Mat Sci & Engn College Stn TX 77843 USA;

    Le Mans Univ Inst Mol & Mat Le Mans UMR CNRS 6283 F-72085 Le Mans France;

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  • 正文语种 eng
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  • 关键词

    Nanocomposites; Anti-corrosion; Photocatalysis; DFT; Multifunctionality;

    机译：纳米复合材料;抗腐蚀;光催化;DFT;多功能性;

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