Microfiltration Membranes Modified with Composition of Titanium Oxide and Silver Oxide by Magnetron Sputtering

Abstract

In this work, the authors present the possibility of modification of polymer membranes by TiO2 + AgO coating created by the magnetron sputtering method. The two-component TiO2 + AgO coating can improve and shape new functional properties such as bactericidal and photocatalytic properties. The influence of magnetron power changes on the structure of the membrane was investigated as well. The structure and elemental composition of TiO2 + AgO coatings were analyzed using SEM and EDS technique. All deposited coatings caused a total inhibition of the growth of two investigated colonies of Escherichia coli and Bacillus subtilis on the surface. The photocatalytic properties for membranes covered with oxide coatings were tested under UV irradiation and visible light. The filtration result show that polymer membranes covered with two-component TiO2 + AgO coatings have a permeate flux similar to the non-coated membranes.

Prospects of Synthesized Magnetic TiO2-Based Membranes for Wastewater Treatment: A Review

“…This has inspired interest in making TiO2-engineered membranes for a variety of applications, including self-clean- Notwithstanding, IPMs have proven to be very promising in wastewater treatment settings, however, they are still limited in a large-scale application. In response, several organic, inorganic, metallic, and polymeric materials have been used as support materials in the fabrication of TiO 2 -based photocatalytic membrane reactors [25,26,53,70,87,88]. In contrast to immobilized TiO 2 membranes, TiO 2 nanofibers, nanowires, and nanotubes are also used to make pure TiO 2 photocatalytic membranes.…”

“…In contrast to immobilized TiO 2 membranes, TiO 2 nanofibers, nanowires, and nanotubes are also used to make pure TiO 2 photocatalytic membranes. These are classified into two major categories: (i) freestanding pure TiO 2 photocatalytic membrane reactors and (ii) composite TiO 2 photocatalytic membrane reactors [87,89,90].…”

“…However, the nanomaterial loading, matrix content, particle dispersion, nanoscale phase size, shape and orientation, as well as interactions between the phases all affect the hybrid material's overall properties [26,90]. This has inspired interest in making TiO 2 -engineered membranes for a variety of applications, including self-cleaning, antimicrobial thin film coatings, photocatalysis, gas sensing and dye-sensitized solar cell nanofibers with well-controlled morphology [25,26,[87][88][89][90]. One-dimensional freestanding TiO 2 membrane reactors with various TiO 2 morphologies, such as nanotubes (NTs), nanofibers (NFs), and nanowires (NWs), have been developed to improve photocatalytic activity and reduce membrane fouling [31,45].…”

“…cell nanofibers with well-controlled morphology [25,26,[87][88][89][90]. One-dimensional freestanding TiO2 membrane reactors with various TiO2 morphologies, such as nanotubes (NTs), nanofibers (NFs), and nanowires (NWs), have been developed to improve photocatalytic activity and reduce membrane fouling [31,45].…”

“…[117]. Membranes with desired morphology and properties are prepared using sol-gel, immersion precipitation, vapor-mediated phase separation and immersion precipitation, electrospinning, dip-coating, sintering, track-etching, stretching, templateleaching, and phase-inversion techniques [71,86,87,90,108,112,113]. Aqueous or gaseous routes can also be used to deposit TiO 2 -based catalysts on standardized membranes.…”