Hits:

Indexed by:期刊论文

Date of Publication:2013-06-01

Journal:APPLIED SURFACE SCIENCE

Included Journals:SCIE、EI

Volume:274

Page Number:101-104

ISSN No.:0169-4332

Key Words:Ni-P-TiO2; Nano-composite coatings; Surface energy; Bacterial adhesion

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.