Next Article in Journal
Microstructure and Electrical Properties of AZO/Graphene Nanosheets Fabricated by Spark Plasma Sintering
Next Article in Special Issue
Application of a Loop-Type Laboratory Biofilm Reactor to the Evaluation of Biofilm for Some Metallic Materials and Polymers such as Urinary Stents and Catheters
Previous Article in Journal
Evaluation of Workpiece Temperature during Drilling of GLARE Fiber Metal Laminates Using Infrared Techniques: Effect of Cutting Parameters, Fiber Orientation and Spray Mist Application
Previous Article in Special Issue
Rotation Disk Process to Assess the Influence of Metals and Voltage on the Growth of Biofilm
Article Menu
Issue 8 (August) cover image

Export Article

Open AccessArticle
Materials 2016, 9(8), 632; doi:10.3390/ma9080632

Effect of Silver or Copper Nanoparticles-Dispersed Silane Coatings on Biofilm Formation in Cooling Water Systems

1
Department of Chemistry and Biochemistry, National Institute of Technology, Suzuka College, Suzuka 510-0294, Japan
2
Department of Materials Science and Engineering, National Institute of Technology, Suzuka College, Suzuka 510-0294, Japan
3
D & D Corporation Ltd., Yokkaichi 512-1211, Japan
4
Department of Maritime Technology, National Institute of Technology, Toba College, Toba 517-8501, Japan
5
Biocorrosion Center, University of Oklahoma, Norman, OK 73019, USA
6
Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan
*
Author to whom correspondence should be addressed.
Academic Editor: Carla Renata Arciola
Received: 14 April 2016 / Revised: 18 July 2016 / Accepted: 22 July 2016 / Published: 29 July 2016
(This article belongs to the Special Issue Biofilm and Materials Science)
View Full-Text   |   Download PDF [7017 KB, uploaded 29 July 2016]   |  

Abstract

Biofouling often occurs in cooling water systems, resulting in the reduction of heat exchange efficiency and corrosion of the cooling pipes, which raises the running costs. Therefore, controlling biofouling is very important. To regulate biofouling, we focus on the formation of biofilm, which is the early step of biofouling. In this study, we investigated whether silver or copper nanoparticles-dispersed silane coatings inhibited biofilm formation in cooling systems. We developed a closed laboratory biofilm reactor as a model of a cooling pipe and used seawater as a model for cooling water. Silver or copper nanoparticles-dispersed silane coating (Ag coating and Cu coating) coupons were soaked in seawater, and the seawater was circulated in the laboratory biofilm reactor for several days to create biofilms. Three-dimensional images of the surface showed that sea-island-like structures were formed on silane coatings and low concentration Cu coating, whereas nothing was formed on high concentration Cu coatings and low concentration Ag coating. The sea-island-like structures were analyzed by Raman spectroscopy to estimate the components of the biofilm. We found that both the Cu coating and Ag coating were effective methods to inhibit biofilm formation in cooling pipes. View Full-Text
Keywords: cooling pipe; biofilm; silver nanoparticle; copper nanoparticle; silane coating; bacterial taxonomy; seawater; geometry; Raman spectroscopy cooling pipe; biofilm; silver nanoparticle; copper nanoparticle; silane coating; bacterial taxonomy; seawater; geometry; Raman spectroscopy
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Ogawa, A.; Kanematsu, H.; Sano, K.; Sakai, Y.; Ishida, K.; Beech, I.B.; Suzuki, O.; Tanaka, T. Effect of Silver or Copper Nanoparticles-Dispersed Silane Coatings on Biofilm Formation in Cooling Water Systems. Materials 2016, 9, 632.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top