Construction of a 2D Layered Phosphorus‐doped Graphitic Carbon Nitride/BiOBr Heterojunction for Highly Efficient Photocatalytic Disinfection

Abstract

Infectious diseases caused by bacteria intimidate the health of human beings all over the world. Although many avenues have been tried, various operating conditions limit their actual applications. Photocatalytic nanomaterials are becoming candidates to be competent for water purification. Here, a novel and more efficient S‐scheme has been engineered between two dimensional (2D) layered phosphorus‐doped graphitic carbon nitride (P‐g‐C3N4) and BiOBr via hydrothermal polymerization to inhibit the recombination of charge and broaden light absorption. The as‐prepared P‐g‐C3N4/BiOBr hybrids exhibits significantly improved photocatalytic disinfection contrast to g‐C3N4/BiOBr in visible wavelengths, suggesting phosphorus doping which adjusts the band structure plays a significant role in the S‐scheme system. And the sterilization rate of multidrug‐resistant Acinetobacter baumannii 28 (AB 28) was 99.9999% within 80 min and Staphylococcus aureus (S. aureus) was 99.9%.

Oxygen and Nitrogen Vacancies in a BiOBr/g-C3N4 Heterojunction for Sustainable Solar Ammonia Fertilizer Synthesis

“…43 For BiOBr, the signal at 510 cm −1 is associated with the Bi−O stretching mode. 44 The BiOBr/ UCN heterojunctions contain the main functional groups of UCN and BiOBr, which further demonstrate the successful preparation of the complexes. EPR measures the energy associated with the spin-flip and absorption of radiation by unpaired electrons, providing valuable insights into the presence of unpaired electrons in a sample.…”

“…For UCN, a weak peak appeared at 2170 cm –1 corresponding to the −C≡N formation . For BiOBr, the signal at 510 cm –1 is associated with the Bi–O stretching mode . The BiOBr/UCN heterojunctions contain the main functional groups of UCN and BiOBr, which further demonstrate the successful preparation of the complexes.…”

Recent progress in graphitic carbon nitride-based materials for antibacterial applications: synthesis, mechanistic insights, and utilization

“…Furthermore, the morphological diversity of semiconductor materials, typically influenced by the manipulation of specific surface area and crystal face exposure, also applies to g-C 3 N 4 . For instance, researchers have successfully prepared atomic monolayer g-C 3 N 4 with a mere 0.5 nm thickness, demonstrating significantly enhanced photocatalytic activity against E. coli under visible light irradiation for 4 h, outperforming block-like g-C 3 N 4 and thermally etched g-C 3 N 4 NSs [94] . Che et al designed an innovative and more efficient S-type heterojunction between 2D phosphorus-doped g-C 3 N 4 (P-g-C 3 N 4 ) and BiOBr using hydrothermal polymerization.…”