Photocatalytic inactivation and removal of algae with TiO2-coated materials

Abstract

The capabilities of TiO 2 -coated materials for the inactivation and removal of algae were investigated. As supports for TiO 2 , non-woven fabric and Ni foam were chosen. To evaluate the ability of noble metal cocatalyst additions to facilitate the photocatalytic algal inhibition of TiO 2 -coated materials, Pd nanoparticles were deposited on non-woven fabric-supported TiO 2 by photoelectrochemical deposition. The fabric-supported Pd/TiO 2 showed higher inhibition activity for algal growth compared to the fabricsupported TiO 2 without Pd. In addition, Ni foam-supported TiO 2 also showed high inhibition activity, both in laboratory-scale tests and open-air tests. Therefore, TiO 2 -coated materials with suitable coating methods such as the use of cocatalysts or large surface area can substantially inhibit algal growth. The ability of the TiO 2 -coated materials to inhibit algae correlated well with their activity for the photocatalytic decolorization of methylene blue, suggesting a nonspecific mechanism in the breakdown of cellular structures.

Analysis of Adsorption and Decomposition of Odour and Tar Components in Tobacco Smoke on Non-Woven Fabric-Supported Photocatalysts

“…On the other hand, the SEM images of the fabric after modification with the host UV-responsive photocatalyst, TiO 2 P 25, are shown in Figure 1b, evidencing that the TiO 2 films are made up of sub-micron particles. These fabrics show a similar morphology with fabrics that we previously prepared and analysed by SEM and X-ray diffraction (XRD) [13]. The SEM images of the fabrics embedded with Fe/TiO 2 and Cu/WO 3 , the visible-light-responsive photocatalysts, are shown in Figure 1c,d, respectively.…”

Facile Synthesis ZnS/ZnO/Ni(OH)2 Composites Grown on Ni Foam: A Bifunctional Materials for Photocatalysts and Supercapacitors

“…It is reported that powder photocatalysts are hard to be gathered and then affect its recycle in the process of governance of water pollution. So, designing active materials in situ grown on macroscopic Ni foam would overcome this problem effectively 25 . Moreover, Nickel foam substrate can be used not only as a reinforcement to enhance conductive performance and promote penetration of electrolytes in the practical application, but also as Ni source during the materials producing process 26 – 28 .…”

Preparation and photocatalytic application of a S, Nd double doped nano-TiO2 photocatalyst

“…The discovery of photocatalytic technology has completely altered the dilemma of disposing of dye wastewater and has made a difference in the protection of human water resources. [1][2][3][4][5][6][7][8] Since the innovation of photocatalytic technology in 1972, public interest in photocatalysis has continued unabated. 9 With the deepening of research, photocatalysis technology can not only produce hydrogen, but also effectively degrade water pollution.…”