Enhanced photocatalysis and bacterial inhibition in Nb₂O₅via versatile doping with metals (Sr, Y, Zr, and Ag): a critical assessment

Abstract

Enhanced photoactivity in Nb2O5 on incorporation of metal dopants towards degradation of water pollutants.

Nb2O5‐Based Photocatalysts

“…[82,85j] Besides, the concentration of oxygen va-cancies can be increased when Nb 2 O 5 catalysts were doped with N, Zr, Y, Zn, or Mo species. [77,90,184] These phenomena were also observed on other metal oxides, like Cu-CeO 2 . [250] As a result, the photocurrent density of N-Nb 2 O 5 was higher than that of the pristine one.…”

“…[ 76 ] The additives, such as urea and melamine, acted as the fuel and template to fabricate TT‐Nb 2 O 5 particles in the calcination process. [ 12b,77 ] Furthermore, the as‐synthesized H‐Nb 2 O 5 particles can be treated under laser pulses to prepare amorphous Nb 2 O 5 , T‐Nb 2 O 5 , and TT‐Nb 2 O 5 , realizing the reversible transformation of crystal structures. [ 78 ]…”

Facile fabrication of hierarchical p-Ag2O/n-Nb2O5 heterojunction microspheres with enhanced visible-light photocatalytic activity

“…2e showed that the O 1s core-level spectra tted well to three peaks at the binding energies of 530.4, 532.0 and 533.3 eV, which were related to the Nb-O bond in Nb 2 O 5 , the Ag-O bond in Ag 2 O and the O-H bond of surface-absorbed water, respectively. 20,44,45 SEM was used to investigate the morphology of the resulting samples. Fig.…”

Facile fabrication of Fe-doped Nb2O5 nanofibers by an electrospinning process and their application in photocatalysis

“…7,8 In this regard, many promising methods including metal and nonmetal doping, noble metal deposition or compositing with other semiconductor have been developed to improve the efficiency of Nb 2 O 5 as a photocatalytic material. [9][10][11][12][13][14][15] It has been proved that metal element doping was one of the most effective approaches to extend the spectral response of the wide-bandgap semiconductor to visible-light region. [16][17][18] Recently, some metal elements such as W, Mo, Fe, Cu and Mn have been employed to tune the electronic structure and enhanced the photocatalytic activity of the semiconductor photocatalysts.…”