Enhanced photocatalytic activity of silica-embedded TiO2 hollow microspheres prepared by one-pot approach

Photocatalytic degradation of eleven microcystin variants and nodularin by TiO2 coated glass microspheres

“…A number of researchers have previously reported the use of TiO2 coated spheres or spheres formed from titania for decomposition of contaminants in water [16][17][18][19][20][21]. Li et al [16,17] successfully degraded methylene blue and orange II with titanium dioxide covered hollow silica spheres. Zhao et al [18] successfully degraded rhodamine B under visible light with hollow spheres (Si/Ti hybrid) of Ag doped titania.…”

An amorphous TiO2 sol sensitized with H2O2 with the enhancement of photocatalytic activity

“…For nanosize TiO 2 , its high activity was primarily governed by the well-known quantum confinement [1]. Some photocatalytic studies have demonstrated that the smaller anatase nanoparticle exhibited higher activity [2,3], and the size of particles could be controlled only by regulating the pH of solution [4]. However, since the small-sized TiO 2 nanoparticles facilitate the agglomeration in synthesis and application, its photocatalytic activity usually decreases dramatically or even negligible.…”

Synthesis, characterization, and activities of visible light-driven Bi2O3–TiO2 composite photocatalysts

“…Besides wellestablished techniques, semiconductor photocatalysis has played a key role in degradation of organic pollutants in waste water, especially those from the textile and the photographic industries. Among various oxide semiconductor photocatalysts, TiO 2 has been proved to be one of the most effective and suitable photocatalyst for environmental applications because of its biological and chemical inertness, stability against photocorrosion, non-toxicity, high redox ability and lower cost [4,5]. But its relatively wide band gap (3.2 eV for anatase) and the relatively high rate of photogenerated electron-hole recombination limit its further application in the visible light region (400 nm < <700 nm), which accounts for 43% of the incoming solar energy [6].…”