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Robust nanoporous Cu/TiO2 ceramic filter membrane with promoted bactericidal function

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Abstract

Filter membrane technology has been extensively used for water purification. However, due to their high brittleness and biological fouling, filter membranes will gradually deteriorate. Here we develop a robust Cu/TiO2 ceramic filter membrane for water treatment, which has excellent inherent antibacterial activities both in the dark and under visible light irradiation. One-dimensional nanobelt TiO2 can be sintered into a nanoporous membrane structure by overlapping and interweaving with each other, thereby achieving high flux simultaneously and solving the problem of high brittleness of inorganic ceramics. Meanwhile, such one-dimensional TiO2 nanostructures can provide more deposition sites for Cu nanoparticles with inherent antibacterial activity in the dark. To realise the surface plasmon resonance-enhanced antibacterial activity under visible light, Cu/TiO2 heterostructures are used.

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Author notes

  1. These authors contributed equally to this work.

Authors and Affiliations

  1. Center of Single-Molecule Sciences, Institute of Modern Optics, Frontiers Science Center for New Organic Matter, Tianjin Key Laboratory of Micro-scale Optical Information Science and Technology, College of Electronic Information and Optical Engineering, Nankai University, Tianjin, 300350, China

    Li Zhou & ChuanCheng Jia

  2. School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China

    ChunYing Shi & XiaoHong Xu

Authors
  1. Li Zhou
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  2. ChunYing Shi
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  3. XiaoHong Xu
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  4. ChuanCheng Jia
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Corresponding authors

Correspondence to XiaoHong Xu or ChuanCheng Jia.

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The supporting information is available online at tech.scichina.com and link.springerlink.com. The supporting materials are published as submitted, without typesetting or editing. The responsibility for scientific accuracy and content remains entirely with the authors.

This work was supported by the National Natural Science Foundation of China (Grant Nos. 22173050, 21977064 and 51732007), the National Key Research and Development Program of China (Grant No. 2021YFA1200102), the Science Fund for Distinguished Young Scholars of Shandong Province (Grant No. ZR2019JQ16), Beijing National Laboratory for Molecular Sciences (Grant No. BNLMS202105) and the Fundamental Research Funds for the Central Universities (Grant No. 63223056).

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Zhou, L., Shi, C., Xu, X. et al. Robust nanoporous Cu/TiO2 ceramic filter membrane with promoted bactericidal function. Sci. China Technol. Sci. 65, 2687–2694 (2022). https://doi.org/10.1007/s11431-022-2151-0

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  • DOI: https://doi.org/10.1007/s11431-022-2151-0

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