STRUCTURE AND PHOTOCATALYTIC PROPERTIES OF N-DOPED TiO_2-x FILMS PREPARED BY N-ION IMPLANTATION

Abstract

Nitrogen doped TiO 2-x films have been prepared by using N -ion implantation method. X-ray diffraction patterns of the N -doped TiO 2-x films could be indexed with rutile TiO 2 and Ti 7 O 13 in structure. XPS measurements revealed a 2.73 atm.% concentration of N atoms in the N -doped films and two N 1 s photoelectron binding energies at 396.3 and 399.9 eV originating from N -doped TiO 2 and N -doped Ti 7 O 13, respectively. The photocatalytic properties of the N -doped films under visible light have been investigated by degradation of methylene blue solution.

Influences of Doping on Photocatalytic Properties of TiO2 Photocatalyst

“…Generally speaking, there are two kinds of processes to prepare N-doped TiO 2 . One process can be ascribed as one-step direct incorporation of N atoms into TiO 2 lattice, such as sol-gel method [74][75][76], chemical vapor deposition (CVD) [77,78], atomic layer deposition (ALD) [79][80][81], hydrothermal method [82][83][84], solvothermal method [85][86][87][88], sol-hydrothermal process [89], hydrolysis-precipitation process [90], bioprocess-inspired method [91], electrochemical method [92][93][94], ion implantation [95,96], combustion method [97][98][99], mechanochemical method [100,101], low-temperature direct nitridization method [102], and microwave-assisted method [103]. [102].…”

Metal‐Organic Framework Derived Terephthalate Ligand Decorated TiO2 with Various Morphologies for Efficient Photocatalytic H2 Evolution

“…Moreover, as seen by the XRD pattern of the TTÀ F sample (MIL-125(Ti) hydrothermally treated in HF solution), both anatase TiO 2 and TPA phases appeared as main peaks, while some secondary impurities from 27.8°to 57°were identified as Ti 7 O 13 (PDF#50-0789). [16] It is noteworthy that TTÀ F sample shows higher crystallinity than that of TTÀ O (MIL-125(Ti) hydrothermally treated in H 2 O). Moreover, the sample of TTÀ S (MIL-125(Ti) hydrothermally treated in H 2 SO 4 solution) exhibits enhanced XRD diffraction peaks compared with TTÀ O, which might result from the sulfate species which promote crystallinity during the preparation process.…”