P=O Functionalized Black Phosphorus/1T-WS2 Nanocomposite High Efficiency Hybrid Photocatalyst for Air/Water Pollutant Degradation

Abstract

Research on layered two-dimensional (2D) materials is at the forefront of material science. Because 2D materialshave variousplate shapes, there is a great deal of research on the layer-by-layer-type junction structure. In this study, we designed a composite catalyst with a dimension lower than two dimensions and with catalysts that canbe combined so that the band structures can be designed to suit various applications and cover for each other’s disadvantages. Among transition metal dichalcogenides, 1T-WS2 can be a promising catalytic material because of its unique electrical properties. Black phosphorus with properly controlled surface oxidation can act as a redox functional group. We synthesized black phosphorus that was properly surface oxidized by oxygen plasma treatment and made a catalyst for water quality improvement through composite with 1T-WS2. This photocatalytic activity was highly efficient such that the reaction rate constant k was 10.31×10−2 min−1. In addition, a high-concentration methylene blue solution (20 ppm) was rapidly decomposed after more than 10 cycles and showed photo stability. Designing and fabricating bandgap energy-matching nanocomposite photocatalysts could provide a fundamental direction in solving the future’s clean energy problem.

Linker-free Functionalization of Phosphorene Nanosheets by Sialic Acid Biomolecules

“…The peak corresponds to the CO band in the amide functional group located in this region. The symmetric stretching mode of PO bonds can also appear in this area . In addition, the P–NH bending mode is noticed in this region .…”

“…The symmetric stretching mode of P�O bonds can also appear in this area. 39 In addition, the P−NH bending mode is noticed in this region. 40 The interaction of sialic molecules with phosphorus atoms can lead to the formation of P−C and P− O−C bands.…”

Recent Progress on Synthesis and Properties of Black Phosphorus and Phosphorene As New-Age Nanomaterials for Water Decontamination

“…Jeong et al 98 synthesized a P:O-functionalized BP@1T-WS 2 nanocomposite with a sheet-shaped structure and used it as a photocatalyst for the removal of MB from water and volatile organic carbon (VOC) removal from air. 98 For the MB removal experiments, 1 mg of the BP@1T-WS 2 catalyst was added to 20 mL of a 20 mg/L MB-containing solution and the mixture was stirred for 30 min in the dark. Light irradiation was supplied from a solar simulator at a wavelength of 350− 1000 nm for MB decomposition, and samples were collected every 5 min.…”

The Ecogeographical Impact of Air Pollution in the Azerbaijan Cities: Possible Plant/Synthetic‐Based Nanomaterial Solutions

“…Of note, both large surface area and high crystallization properties of TiO2 nanorods led to the uniform dispersion of the Cr-Fe-Mn mixed metal oxide NPs and enhanced its activity Figure 5. illustrates the plausible schematic representation of photocatalytic degradation using OBP/1 T-WS2 nanocomposites [94].…”