Atomic layer deposition of TiO2−xNx thin films for photocatalytic applications

Modifications of surface materials and their effects on cleanability as studied by radiochemical methods

“…The results of cleanability studies showed that organic particle soil was removed more efficiently after UV-radiation than without UV treatment, whereas UV-radiation did not affect the removal of oil soil. Decomposition of organic soil to carbon dioxide was not observed, in contrast to earlier studies (Fujishima et al 2000b, Minabe et al 2000, Pore et al 2006). Fujishima and Zhang (2006) concluded that depending on the composition and the processing, surfaces can be more photocatalytic and less superhydrophilic or vice versa.…”

“…In general the studied properties have been surface structure (Liu et al 1996, Bolelli et al 2005, Mateus et al 2005, hydrophilic properties (Watanabe et al 1999, Fujishima et al 2000a, Wu et al 2005, Fujishima and Zhang 2006, Pore et al 2006, Kronberg et al 2007) and crystallization (Llusar et al 2002, Romero et al 2003, Hsiang and Lin 2004, Jung and Park 2004, Bolelli et al 2006, Fröberg et al 2007a, Fröberg et al 2007b. In some studies it was reported that the manufacturing process affected crystallization and surface properties (Llusar et al 2002, Romero et al 2003, Hsiang and Lin 2004, Pore et al 2006, Fröberg et al 2007b. A new function of the coating is to make the surface easy-to-clean or selfcleaning.…”

Nanomaterial‐Based Photocatalysts

“…Sols from the inorganic salts are less stable than those from the alkoxides. 58 Alkoxides fall in the class of metalorganic compounds in which organic ligands coordinate to a metal or metalloid through oxygen atoms, not by the direct metal-carbon bonds (organometallics). The sol-gel process, irrespective of the nature of precursors, solely consists of the following six steps:…”

Synthesis of Bi2WO6Nanometer Sheet Shaped and Approach to the Photocatalysis

“…But the large band gap of TiO 2 (3.2 eV) makes it excitable only by UV light wavelengths below 387 nm, which severely limits the efficient usage of solar energy to a maximum of 5% and hinders the commercialization of this technology. [4][5][6][7][8][9][10] Therefore, to avoid this drawback, new visiblelight-driven photocatalysts have been explored. Recently, nano-structured tungsten materials, such as Bi 2 WO 6 , Bi 2 MO 6 , Bi 2 W 1-x Cu x O 6-2x , and Sb 2 WO 6 , have attracted much interest because of their potential application in various fields, including photoluminescence, optical fiber, scintillation materials, and photocatalysts.…”