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涤纶表面Se@TiO2纳米结构构筑及其光催化和抗菌性能

赵紫瑶 栾睿 莫慧琳 聂昊 任煜 李美贤

赵紫瑶, 栾睿, 莫慧琳, 等. 涤纶表面Se@TiO2纳米结构构筑及其光催化和抗菌性能[J]. 复合材料学报, 2024, 41(11): 6026-6035. doi: 10.13801/j.cnki.fhclxb.20240013.002
引用本文: 赵紫瑶, 栾睿, 莫慧琳, 等. 涤纶表面Se@TiO2纳米结构构筑及其光催化和抗菌性能[J]. 复合材料学报, 2024, 41(11): 6026-6035. doi: 10.13801/j.cnki.fhclxb.20240013.002
ZHAO Ziyao, LUAN Rui, MO Huilin, et al. Construction of Se@TiO2 nanostructures on polyester surface and investigation of the photocatalytic and antibacterial properties[J]. Acta Materiae Compositae Sinica, 2024, 41(11): 6026-6035. doi: 10.13801/j.cnki.fhclxb.20240013.002
Citation: ZHAO Ziyao, LUAN Rui, MO Huilin, et al. Construction of Se@TiO2 nanostructures on polyester surface and investigation of the photocatalytic and antibacterial properties[J]. Acta Materiae Compositae Sinica, 2024, 41(11): 6026-6035. doi: 10.13801/j.cnki.fhclxb.20240013.002

涤纶表面Se@TiO2纳米结构构筑及其光催化和抗菌性能

doi: 10.13801/j.cnki.fhclxb.20240013.002
基金项目: 江苏省自然科学基金(BK20220613);南通市科技项目(JC12022080)
详细信息
    通讯作者:

    任 煜,博士,教授,硕士生导师,研究方向为纤维材料的功能化改性 E-mail: ren.y@ntu.edu.cn

  • 中图分类号: TB333

Construction of Se@TiO2 nanostructures on polyester surface and investigation of the photocatalytic and antibacterial properties

Funds: Jiangsu Natural Science Foundation Youth Fund (BK20220613); Nantong Science and Technology Project (JC12022080)
  • 摘要: 采用等离子体技术对涤纶针织物进行表面预处理,在涤纶针织物表面负载纳米TiO2,然后通过分子组装法在TiO2/聚对苯二甲酸乙二醇酯(PET)表面生长Se纳米球(SeNPs)和Se纳米线(SeNWs),在涤纶表面构筑Se@TiO2二元复合结构(SeNPs@TiO2/PET和SeNWs@TiO2/PET)。通过扫描电镜(SEM)、X射线衍射(XRD)、X射线光电子能谱(XPS)、紫外-可见吸收光谱(UV-vis)、光致发光光谱(PL)及光催化和抗菌实验对材料的晶体结构、表面形态、化学组成、光催化性能及抗菌性能等进行表征。通过接触角测试对复合光催化材料的表面润湿性能进行表征。光催化降解实验表明:SeNWs@TiO2/PET在模拟太阳光下具有更高的降解率,其对模型污染物亚甲基蓝降解90 min后,降解率达到98.3%。PL光谱表明,SeNWs@TiO2/PET电子-空穴对的分离率高于SeNPs@TiO2/PET。UV-vis光谱表明,SeNPs@TiO2/PET和SeNWs@TiO2/PET的相对禁带宽度分别为2.8 eV和2.7 eV。两种复合材料对金黄色葡萄球菌和大肠杆菌的抑菌率分别可达到99%和90%以上。

     

  • 图  1  Se@TiO2/PET材料的SEM图像:(a) Se纳米球(SeNPs)@TiO2/聚对苯二甲酸乙二醇酯(PET);(b) Se纳米线(SeNWs)@TiO2/PET;(c) SeNPs;(d) SeNWs

    Figure  1.  SEM images of Se@TiO2/PET materials: (a) Se nanospheres (SeNPs)@TiO2/polyethylene terephthalate (PET); (b) Se nanowires (SeNWs)@TiO2/PET; (c) SeNPs; (d) SeNWs

    图  2  Se@TiO2/PET材料表面各元素分布图

    Figure  2.  Distribution map of various elements on the Se@TiO2/PET material surface

    图  3  PET、SeNPs@TiO2/PET和SeNWs@TiO2/PET的XRD图谱

    Figure  3.  XRD patterns of PET, SeNPs@TiO2/PET and SeNWs@TiO2/PET

    图  4  Se@TiO2/PET的XPS图谱:(a)全谱;(b) C1s;(c) Ti2p; (d) O1s;(e) Se3d

    Figure  4.  XPS spectra of Se@TiO2/PET: (a) Wide spectrum; (b) C1s; (c) Ti2p; (d) O1s; (e) Se3d

    图  5  PET、SeNPs@TiO2/PET和SeNWs@TiO2/PET的光致发光光谱图

    Figure  5.  Photoluminescence spectra of PET, SeNPs@TiO2/PET and SeNWs@TiO2/PET

    图  6  PET、SeNPs@TiO2/PET和SeNWs@TiO2/PET的紫外-可见吸收光谱

    —Photon energy; αhν—Product of the absorption coefficient and photon energy

    Figure  6.  UV-Vis absorption spectra of PET, SeNPs@TiO2/PET and SeNWs@TiO2/PET

    图  7  PET、SeNPs@TiO2/PET和SeNWs@TiO2/PET的接触角

    Figure  7.  Contact angle diagrams of PET, SeNPs@TiO2/PET and SeNWs@TiO2/PET

    图  8  模拟太阳光下SeNPs@TiO2/PET和SeNWs@TiO2/PET对亚甲基蓝的降解曲线

    C0 and C denote the reactant concentrations at time 0 min and t, respectively; MB—Methylene blue

    Figure  8.  Simulated degradation curves of methylene blue by SeNPs@TiO2/PET and SeNWs@TiO2/PET under visible light

    图  9  模拟太阳光下SeNPs@TiO2/PET和SeNWs@TiO2/PET对亚甲基蓝的重复降解率

    Figure  9.  Simulates the repeated degradation rate of methylene blue by SeNPs@TiO2/PET and SeNWs@TiO2/PET under visible light

    图  10  SeNPs@TiO2/PET和SeNWs@TiO2/PET对大肠杆菌和金黄色葡萄球菌的抑菌图

    Figure  10.  Antibacterial activity of SeNPs@TiO2/PET and SeNWs@TiO2/PET against E.coli and S.aureus

    表  1  Se@TiO2/PET材料表面各元素的相对含量

    Table  1.   Relative content of elements on the surface of Se@TiO2/PET materials

    Sample Relative content of element/
    wt%
    C O Ti Se
    PET 67.79 32.21
    SeNPs@TiO2/PET 60.83 37.47 0.69 1.01
    SeNWs@TiO2/PET 61.44 34.82 2.83 0.91
    下载: 导出CSV

    表  2  Se@TiO2/PET材料的接触角及吸水时间

    Table  2.   Contact angle and water absorption time of materials

    Sample Contact angle Water
    absorption time
    PET 126.4° n/a
    SeNPs@TiO2/PET >1 s
    SeNWs@TiO2/PET >1 s
    Note: n/a denotes not applicable.
    下载: 导出CSV

    表  3  SeNPs@TiO2/PET和SeNWs@TiO2/PET对大肠杆菌和金黄色葡萄球菌的抑菌率

    Table  3.   Antibacterial rates of SeNPs@TiO2/PET and SeNWs@TiO2/PET against E.coli and S.aureus

    Sample E. coli colony/
    (CFU·mL−1)
    Bacteriostatic rate S. aureus colony/(CFU·mL−1) Bacteriostatic
    rate
    Blank 1.73×106 n/a 0.95×106 n/a
    TiO2/PET 7.06×105 59.19% 0.84×105 91.16%
    SeNPs@TiO2/PET 1.38×105 92.03% 1 99.99%
    SeNWs@TiO2/PET 0.92×105 94.68% 1 99.99%
    下载: 导出CSV
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  • 收稿日期:  2023-12-08
  • 修回日期:  2024-01-03
  • 录用日期:  2024-01-05
  • 网络出版日期:  2024-01-15
  • 刊出日期:  2024-11-15

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