Antibacterial characteristics of electroless plating Ni-P-TiO2 coatings

Qi Zhao, Chen Liu, Xueju Su, Shuai Zhang, Wei Song, Su Wang, Guiling Ning, Junwei Ye, Yuan Lin, Weitao Gong

    Research output: Contribution to journalArticle

    15 Citations (Scopus)

    Abstract

    Electroless Ni-P coatings have been widely used in the chemical, mechanical and electronic industries due to their excellent corrosion and wear resistance. Many studies reported that the incorporation of nanosized particles TiO2 into Ni-P matrix greatly improved their anti-corrosion and anti-wear resistance. However no studies have been reported on their anti-bacterial property. In this paper, the Ni-P-TiO2 nano-composite coatings were prepared on stainless steel 316L using electroless plating technique. The experimental results showed that the Ni-P-TiO2 coatings reduced the adhesion of three bacterial strains (Pseudomonas fluorescens, Cobetia and Vibrio) by up to 75% and 70% respectively, as compared with stainless steel and Ni-P coatings. The electron donor surface energy of the Ni-P-TiO2 coatings increased significantly with increasing TiO2 content after UV irradiation. The number of adhered bacteria decreased with increasing electron donor surface energy of the coatings. (C) 2013 Elsevier B.V. All rights reserved.

    Original languageEnglish
    Pages (from-to)101-104
    Number of pages4
    JournalApplied Surface Science
    Volume274
    DOIs
    Publication statusPublished - 2013

    Keywords

    • SURFACE
    • BACTERIAL ADHESION
    • Ni-P-TiO2
    • Surface energy
    • COMPOSITE COATINGS
    • IMPACT
    • ENERGY
    • HYDROPHILICITY
    • Bacterial adhesion
    • Nano-composite coatings

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