Fabrication of g-C₃N₄/Bi₂WO₆ as a direct Z-scheme excellent photocatalyst

Abstract

To improve the photocatalytic efficiency of Bi2WO6, two types of g-C3N4 nanomaterial, g-C3N4 quantum dots and g-C3N4 nanosheets, were incorporated with Bi2WO6 to construct two kinds of g-C3N4/Bi2WO6 Z-scheme photocatalysts...

Heterojunction Photocatalyst Loaded on Electrospun Nanofibers for Synergistic Enhanced Photocatalysis and Real-Time Temperature Monitoring

“…The visible light absorption edge of g-C 3 N 4 is located at 445 nm, whereas the absorption peak of Bi 2 WO 6 is approximately 450 nm. After the combination of g-C 3 N 4 and Bi 2 WO 6 , the edge of light absorption has undergone a slight redshift . The edge of the absorption band can be calculated from the cutoff wavelength of the absorption spectra.…”

“…After the combination of g-C 3 N 4 and Bi 2 WO 6 , the edge of light absorption has undergone a slight redshift. 45 The edge of the absorption band can be calculated from the cutoff wavelength of the absorption spectra. Besides, the relationship of band edge and optical absorption can be determined by the Tauc equation: 46…”

Preparation and photocatalytic properties of a CdWO4/Bi2WO6 binary heterojunction

“…Boasting a monoclinic wolframite structure, CdWO 4 adheres to the C 2h point group symmetry and the P 2 / c space group. 22 CdWO 4 has been highlighted in the literature due to its large band gap of 3.8 eV, which gives it remarkable reductive abilities. This makes CdWO 4 a superior photocatalyst compared to zinc oxide and titanium dioxide.…”

Fabrication of Ternary Ag/g‐C3N4/BiVO4 Composites with Enhanced Visible‐Light‐Driven Photocatalytic Activity toward Rhodamine B Elimination

“…However, g‐C 3 N 4 still has several drawbacks that limit its photocatalytic capability, such as a high rate of electron‐hole pair recombination, a low surface area, and poor electrical conductivity [2] . To enhance the photocatalytic performance of g‐C 3 N 4 , various approaches have been investigated, such as morphology controlling, [3] doping g‐C 3 N 4 with metal or non‐metal [4–6] and coupling to other semiconductors [7–9] . Among these, coupling with different semiconductors is a promising method because g‐C 3 N 4 can serve as a useful supporter to other composites; thus, the photocatalytic performance could be improved.…”

“…[2] To enhance the photocatalytic performance of g-C 3 N 4 , various approaches have been investigated, such as morphology controlling, [3] doping g-C 3 N 4 with metal or nonmetal [4][5][6] and coupling to other semiconductors. [7][8][9] Among these, coupling with different semiconductors is a promising method because g-C 3 N 4 can serve as a useful supporter to other composites; thus, the photocatalytic performance could be improved. Many semiconductors were utilized to form composite heterojunction photocatalysts with g-C 3 N 4 , such as Bi 2 WO 6 , Ag 3 PO 4 , WO 3 , and CdS.…”