rutile TiO2substitutional N dopingIntroducing band gap states to TiO2 photocatalysts is an efficient strategy for expanding the range of accessible energy available in the solar spectrum. However, few approaches are able to introduce band gap states and improve photocatalytic performance simultaneously. ...
We successfully dope W, a band gap narrower, into fine size of polymorphic particles by Sn-codoping, a promoter of the anatase-to-rutile transformation (ART), and demonstrate greatly improved photocatalytic activity. The accelerated ART by Sn-doping could keep the size of polymorph junctioned ...
Notice that Ti2O3 presents the full ionized charge state (+4) as the most stable (lowest formation energy) spanning the entire rutile TiO2 band gap, while both Ti4O7 and Ti5O9 present the same trend from the VBM up to ε(+4/0) = ECBM − 0.36 eV and 0.48 eV ...
TiO2is an important transition metal oxide material with a major application area in photocatalysis, where it shows its efficiency in the removal of unwanted impurities from water, air, etc. [1,2]. The main drawback of pure TiO2is its wide band gap (3 to 3.2 eV); because of which, it...
Immobilization of TiO2 into kaolinite only slightly modified the band gap (Table 3), probably because the high dispersion of TiO2 particles hindered the transference of energy into the environment. Various authors have determined that in TiO2 the rutile has a direct band gap of 3.06 eV and an ...
Nevertheless, TiO2 exhibits a wide band gap of around 3.2 eV26,27 that limits its absorption in the visible and, especially, in the near infrared (NIR) region7. A common way to reduce the band gap of TiO2 is through doping with appropriate elements which has also significant impact on...
TiO2主要性质 •TiO2晶体结构•TiO2的热力学性质•TiO2电子及能带结构 TiO2晶体结构 金红石相锐钛矿相 二氧化钛结构单元TiO6的连接方式：a.共顶点方式；b.共边方式 TiO2的热力学性质 •金红石相（rutile）TiO2为高温稳定相•锐钛矿相（anatase）及板钛矿相（brookite）TiO2在制备过程中更为常见•当颗粒粒...
TiO2, it led to separate efficiently photo-ge nerated holes and electr ons and lower recomb in ati on rate of electr ons and holes, thus photocatalytic efficie ncy of metallic oxide doped TiO 2 films would be higher.Key words: MOx/ TiO2 composite films; band gap; photocatalytic efficie ...
Nanocrystalline TiO2 powders with different optical band gap have been successfully prepared using solution combustion method starting directly from titanium metal. The emphasis is placed on the role of fuel urea on the variations of optical band gap which is obtained from DRS data in the range of...
L. Synchrotron radiation defect state in the band gap of titania. Science studies of H2O 320, 1755–1759 adsorption (2008). on 42. Thomas, A. G. photoemission et al. Comparison of the electronic structure and x-ray absorption spectroscopy. Phys. Rev. B of anatase and rutile 75, 035105 ...