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1.5 Objectives
The objectives of this research are: i.
To determine the characteristics of Degussa P25 powder as a precursor in sol gel for dip-coating
ii. To investigate the effect of the deposited AgTiO
2
thin film calcined at different temperatures on different substrates
iii. To evaluate the characteristics of deposited AgTiO
2
antimicrobial coating by using X-ray Diffraction XRD and Scanning Electron Microscopy SEM
1.6 Scope and Significance of Study
The scope of this research should be focused on the coating ability to be bonded onto the substrate surface and the substrates are stainless steel, glass, acrylic perspex and
ceramic. The coating method chosen in this research is by using sol gel dipping method, due to its economical cost, high purity and low processing temperatures. The
characteristics study is to find the anatase peak and the porosity of the crystallization structure of the coating.
The significance of this study is to ensure that the AgTiO
2
antimicrobial coating will be able to be deposited onto different types of substrate by using the TiO
2
formulation with a method of sol gel dip coating deposition. Thus an antimicrobial coating will be applied to
all related industry for better enhancement of future prevented microbes contaminated surface.
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CHAPTER 2
LITERATURE REVIEW
2 Introduction
Antimicrobial coating has been introduced in various applications and it has helped the environment to be free of microbes and prevents microbes’ breeding place.
2.1 Antimicrobial coating
Antimicrobial surfaces have been utilized in lots of application, not only in the health industry, but also home and industrial uses. Antimicrobial coatings are functionalized in
diverse processes. A coating may be applied to a surface that has a chemical compound which is toxic to microorganism.
Microorganisms can appear anywhere, spreading rapidly and endangering our health. Objects that people come into contact with every day are particularly prone to microbial
colonization. An antimicrobial coating a tad differs from a microbial coating, whereby the latter only focus on providing protection against bacteria, while the first one provides
protections against bacteria, fungi, virus and algae.
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2.2 Types of antimicrobial application
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