Silver Nanoparticle Incorporated Titanium Oxide for Bacterial Inactivation and Dye Degradation

Abstract

This chapter deals with preparation and characterization of silver nanoparticles incorporated in titania or TiO 2-AgNP in short and its performance study as a visible light responsive photocatalyst for bacterial inactivation and dye degradation. The preparation of TiO 2-AgNP performed by several methods including sol-gel, impregnation, precipitation, and photocatalytic deposition is described. Characterizations by XRD, XPS, FTIR, DRUV, and SEM/TEM machines to confirm the formation of the metallic silver nanoparticle, as well as the shape and size, and to follow the interaction between Ag atoms and other atoms in the crystal lattice of TiO 2, are presented. Further, the antibacterial performance and dye degradation activity of TiO 2-AgNP, both under UV and visible light, are described.

Primary Colors Red, Yellow, and Blue Use as Self-Cleaning Paints with Layer of Titanium Dioxide

“…The maximum absorption wavelength in (λ max =387 nm). This result is good agreement with the other researchers (12).…”

Removal of an Ethoxylated Alkylphenol by Adsorption on Zeolites and Photocatalysis with TiO2/Ag

“…Photo-deposition methods are based on the fact that certain metal cations with appropriate redox potentials can be deposited on a support and reduced by photoelectrons created by the lighting of UV lamps [32]..…”

Fabrication and Characterization of Antimicrobial Magnetron Cosputtered TiO2/Ag/Cu Composite Coatings

“…The development of Ag-doped TiO 2 coatings and composites with improved antimicrobial activity continues [14][15][16][17][18][19][20][21][22][23][24]. Direct contact and released silver NPs and ions killing are proposed as a basis of the bactericidal action of such coatings [23].…”

“…The development of Ag-doped TiO 2 coatings and composites with improved antimicrobial activity continues [14][15][16][17][18][19][20][21][22][23][24]. Direct contact and released silver NPs and ions killing are proposed as a basis of the bactericidal action of such coatings [23]. The development of Cu-doped TiO 2 coatings and composites also continues, and a large variety of such coatings with improved antimicrobial activity are reported in the literature [25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40].…”

“…Our short review demonstrated that different techniques are in use for preparation and deposition of antimicrobial coatings, each one with its own advantages and disadvantages. Among them are the Chemical Vapor Deposition (CVD) in different modes [18][19][20][21][22][23][24]; the solgel method [41][42][43]; the sputtering of multilayered and nanocomposite thin films [3,[44][45][46][47][48][49]; and others. Magnetron sputtering is preferred for the fabrication of antimicrobial coatings because of its advantages.…”