N doped -TiO2 coupled to BiVO4 with high performance in photodegradation of Ofloxacin antibiotic and Rhodamine B dye under visible light

Lignin‐Derived Carbon Nanofibers Loaded with TiO2 Enables Efficient Photocatalysis

“…Therefore, the carbonized crystal form of TiO 2 @LCNFs was systematically analyzed. The XRD patterns of the TiO 2 @LCNFs show obvious diffraction peaks of TiO 2 anatase crystal form, [28,29] indicating that TiO 2 was successfully loaded on the surface of the LCNFs (Figure 3a-c). When the carbonization temperature is 700 and 800 °C, the crystal structure of TiO 2 remains anatase type.…”

Heterogeneous Photocatalysis as a Potent Tool for Organic Synthesis: Cross-Dehydrogenative C–C Coupling of N-Heterocycles with Ethers Employing TiO2/N-Hydroxyphthalimide System under Visible Light

“…The modification of heterogeneous photocatalysts, such as TiO 2 , in order to shift their photoactivity spectrum from UV to visible light [ 10 , 34 , 35 , 36 , 37 ] is the key task for expanding the scope of their applications in organic synthesis, increasing selectivity and making the of use cheap and available light sources for catalyst activation possible. At present, the following modification approaches have been proposed: the immobilization of dyes (organic compounds or metal complexes) on the photocatalyst surface [ 34 , 38 , 39 , 40 , 41 ], doping with metal ions or non-metal elements [ 42 , 43 ], semiconductor coupling [ 7 , 44 , 45 , 46 , 47 , 48 , 49 ] and modification with organic molecules bearing hydroxyl or carboxyl groups [ 34 , 50 , 51 , 52 , 53 , 54 , 55 , 56 ], which demonstrate the occurrence of visible light absorption when adsorbed on the surface of a semiconductor.…”

Enhanced Charge Separation and Transfer by BiVO4 Heterojunction and N-Doped for TiO2 Nanotubes during Photoelectrochemical Water Splitting

“…Nitrogen doping could introduce an internal energy level between the valence band (VB) and conduction band (CB) of TiO 2 . 11,36,37 The internal energy level acts as a trapping center for the photogenerated electrons, which could decrease the rate of recombination of the photogenerated electrons and holes.…”

“…Hydrogen generation by solar water splitting has the potential to be a promising method in the future clean and sustainable energy chain. , The exploration of artificial hydrogen production simulating natural photosynthesis began in 1972 by Fujishima and Honda . After that, a lot of work was devoted to the development of photocatalysts for the hydrogen production from solar energy by photoelectrochemical (PEC) water splitting. , Generally, n-type semiconductors are used as the photoanodes during PEC water splitting. − Many studies utilize the metal oxide semiconductor for PEC water splitting, such as TiO 2 , − BiVO 4 , − and α-Fe 2 O 3 . − The ideal photocatalyst should have good light absorption, high charge separation efficiency, and suitable valence bands (VB) and conduction bands (CB) for redox reactions. Among them, TiO 2 has been extensively explored by numerous researchers for its low cost, nontoxicity, and high chemical stability .…”

“…Thus, it could reduce the energy band gap, inhibit the inner charge carriers’ recombination, and enhance the visible-light harvesting capacity of TiO 2 as a photoanode. Nitrogen doping could introduce an internal energy level between the valence band (VB) and conduction band (CB) of TiO 2 . ,, The internal energy level acts as a trapping center for the photogenerated electrons, which could decrease the rate of recombination of the photogenerated electrons and holes.…”