Transactions of Nonferrous Metals Society of China
Preparation, characterization and photo-catalytic behavior of WO3-TiO2 catalysts with oxygen vacancies
References (21)
- et al.
Synthesis and photocatalytic properties of nanometer TiO2/conjugated polymer complex materials [J]
Chemical Bulletin
(2008) - et al.
Dynamic ESR study of oxygen chemisorption on TiO2-based catalysts [J]
J Catal
(1993) - et al.
The enhancement of TiO2 photocatalytic activity by hydrogen thermal treatment [J]
Chemosphere
(2003) - et al.
Preparation of pure rutile and anatase TiO2 nanopowders using RF thermal plasma [J]
Thin Solid Films
(2004) - et al.
Photocatalytic oxidation of water by visible light using ruthenium-doped titanium dioxide power [J]
Photochemistry and Photobiology A: Chem
(1999) - et al.
Enhanced photocatalytic activity in composites of TiO2 nanotubes and CdS nanoparticles [J]
The Chemical Communication
(2006) - et al.
Effects of Sn dopant on the photoinduced charge property and photocatalytic activity of TiO2 nanoparticles [J]
Applied Catalysis B: Environmental
(2006) - et al.
Effect of preparation process of WO3/TiO2 films on photo-catalytic activity under visible light [J]
Trans Nonferrous Met Soc China
(2002) - et al.
Preparation of TiO2 photocatalyst coated with WO3 for O2 evolution [J]
Trans Nonferrous Met Soc China
(2008) - et al.
Photocatalytic activity for O2 evolution of WO3 prepared through pyrolysis of ammonium paratungstate under O2/Ar atmosphere [J]
Trans Nonferrous Met Soc China
(2006)
Cited by (18)
Solar photocatalytic activity of TiO<inf>2</inf> modified with WO<inf>3</inf> on the degradation of an organophosphorus pesticide
2013, Journal of Hazardous MaterialsCitation Excerpt :Among these strategies, WO3 coupling has been studied to improve the photocatalytic activity of TiO2 because WO3 (Eg = 2.8 eV) can function as an electron accepting species, through a type II heterojunction [8]. However, the activity of WO3/TiO2 has primarily been evaluated on the degradation of dyes using lamps as irradiation sources [9–16] whereas Tong et al. investigated the use of WO3/TiO2 in water-splitting for producing O2 [17]. The photocatalytic activity of a semiconductor depends on its preparation method because it affects the physicochemical properties of the solid surface.
Synthesis by sol-gel of WO<inf>3</inf>/TiO<inf>2</inf> for solar photocatalytic degradation of malathion pesticide
2013, Catalysis TodayCitation Excerpt :A typical behavior of most solids prepared by the sol–gel process is the ability to retain the OH groups tied to the solid network up to higher temperatures [34], therefore, the formation of defects in a semiconductor oxide prepared by sol–gel may occur via two different mechanisms: dehydroxylation or desorption of surface oxygen during thermal treatment creating vacancies [35]. Oxygen vacancies can improve the efficiency of the separation of electrons and holes and the absorbing ability for visible light [36,37]. In Fig. 3, the SEM micrographs show that the average particle size of the TiO2 sol–gel and 2%WO3/TiO2 samples were around 20 nm, which agrees with the Scherrer formula results.
Rapid photokilling of gram-negative Escherichia coli bacteria by platinum dispersed titania nanocomposite films
2012, Materials Chemistry and PhysicsCitation Excerpt :Appropriate oxygen vacancies concentration in thermally treated TiO2 could improve the separation rate of electron and hole pairs, so that it could improve its photocatalytic properties. In addition, it was reported [32,33] that oxygen vacancy could change the band gap of TiO2 and extend the photocatalytic activities to visible light. Thus, the superior efficiency of Pt–TiO2 (IR & PD) catalysts as compared to bare TiO2 for photokilling of E. coli bacteria is presented in this research investigation.
Structures and properties of titania thin films annealed under different atmosphere
2011, Thin Solid FilmsCitation Excerpt :Appropriate oxygen vacancy concentration in titania could improve the separation rate of electron and hole pairs, so that it could improve its photocatalytic properties [30]. In addition, it was reported that oxygen vacancy could change the band gap of titania and extend the photocatalytic activities to visible light [31]. In summary, the H2 annealed films having the best anatase crystallinity with proper concentration of oxygen vacancies could yield improved photocatalytic activity under both UV and visible light irradiation.
Solvothermal preparation of Sn<sup>4+</sup> doped anatase TiO<inf>2</inf> nanocrystals from peroxo-metal-complex and their photocatalytic activity
2011, Applied Catalysis B: EnvironmentalCitation Excerpt :Both of these lead to the enhanced photoactivities. However, too much oxygen vacancies could form electron–hole recombination centers, leading to the decrease of photocatalytic activity [61]. Hence, the observation for the optimized amount of Sn4+ incorporation for sample Ti0.97Sn0.03O2 with the highest photocatalytic activity can be explained by the modifications of optical properties and surface state.
Foundation item: Project(08JJ3022) supported by the Natural Science Foundation of Hunan Province, China; Project(K−081025) supported by the Photocatalytic Key Laboratory of Fujian Province, China