Influence of nitrogen doping on visible light photocatalytic activity of TiO2 nanowires with anatase-rutile junction

Facile Synthesis of Anatase–Rutile Diphase N-doped TiO2 Nanoparticles with Excellent Visible Light Photocatalytic Activity

“…Theory calculation indicates that the conduction band minimum of anatase is about 0.2 eV higher than that of rutile and the valence band maxima of anatase is close to the rutile, which demonstrates that the electrons can transfer from anatase to rutile. Recently, some research groups have constructed the anatase-rutile phase junction photocatalysts by different synthetic approach, and they all present the enhanced photocatalytic performance in contrast with the single phase TiO 2 [33][34][35][36][37][38]. For instance, Yu's group have designed and prepared the anatase-rutile TiO 2 nanofiber photocatalysts by electrospinning process, which are endowed the excellent photocatalytic H 2 evolution activities [33].…”

How Interplay between UV and Visible Activation Dictates Charge Transfer in Nanoengineered Gold Nanoparticle Interfaces at Rutile TiO2 Polymorphism: Photocatalysis with Contrasting Results

“…Figure a represents the FTIR spectra (FTIR spectrometer (Nicolet Impact I-410, USA)) of the as-synthesized TiO 2 (M) and Au/TiO 2 (M) catalyst in the frequency range 400–4000 cm –1 . Both the IR spectra show broad band between 3412- 3418 cm –1 and 1630–1628 cm –1 is assigned to the surface O–H stretching vibration and bending vibration modes, respectively . Compared to TiO 2 (M), the band at 3418 cm –1 in the Au/TiO 2 (M) is broadened, revealing the decrease of hydroxyl (O–H) groups of water after Au doping.…”

“…Figure 3e shows a lattice spacing of 0.35 and 0.32 nm due to the [101] and [110] planes of anatase and rutile with Au having a lattice spacing of 0.23 nm due to the [111] plane. HR-TEM images of Au/TiO 2 (M) in Figure 3, parts e and h, clearly show that the Au nanoparticles are located at the rutile 31 Compared to TiO 2 (M), the band at 3418 cm −1 in the Au/TiO 2 (M) is broadened, revealing the decrease of hydroxyl (O−H) groups of water after Au doping. In both spectra, a characteristic broad band appears between 455 and 477 cm −1 and 665−772 cm −1 produced by the metal oxide bond, which is assigned to the tetrahedral and octahedral lattice of the Ti−O stretching band.…”

Heavy Metal Ions in Wastewater Affect the Photodegradation of Phenol‐4‐sulfonic Acid over Biphasic TiO2/Activated Carbon Fiber Composites

“…The anatase/ rutile heterojunctions facilitated the electron transfer from rutile to anatase, which supported the electron-hole separation and enhanced photo-response ability. [41,42] Photodegradation activity of A/R/ACFs for PSA removal…”

“…The anatase/rutile heterojunctions were formed within the A/R/ACFs, which facilitated the electron transfer from rutile to anatase. [41,42] The low bandgap energy (E g ) and stable electron-hole separation of the A/R/ACFs made them possess more excellent photocatalytic activity than the A/ACFs and R/ACFs (Figure 5). Furthermore, the durability of A/R/ACFs was also tested, as shown in Figure S10.…”