Facile Synthesis of Bi2MoO6 Microspheres Decorated by CdS Nanoparticles with Efficient Photocatalytic Removal of Levfloxacin Antibiotic

Abstract

Developing high-efficiency and stable visible-light-driven (VLD) photocatalysts for removal of toxic antibiotics is still a huge challenge at present. Herein, a novel CdS/Bi2MoO6 heterojunction with CdS nanoparticles decorated Bi2MoO6 microspheres has been obtained by a simple solvothermal-precipitation-calcination method. 1.0CdS/Bi2MoO6 has stronger light absorption ability and highest photocatalytic activity with levofloxacin (LEV) degradation efficiency improving 6.2 or 12.6 times compared to pristine CdS or Bi2MoO6. CdS/Bi2MoO6 is very stable during cycling tests, and no appreciable activity decline and microstructural changes are observed. Results signify that the introduction of CdS could enhance the light absorption ability and dramatically boost the separation of charge carriers, leading to the excellent photocatalytic performance of the heterojunction. This work demonstrates that flower-like CdS/ Bi2MoO6 is an excellent photocatalyst for the efficient removal of the LEV antibiotic.

Ag2CO3 Decorating BiOCOOH Microspheres with Enhanced Full-Spectrum Photocatalytic Activity for the Degradation of Toxic Pollutants

“…However, the wide band gap ( E g = 3.4 eV) of BiOCOOH severely restrains its practical application. Actually, the combination of wide band gap semiconductors with narrow band gap compounds can remarkably enhance the photocatalytic performance, due to expanded sunlight absorption and the accelerated separation of charge carriers [14,15,16,17,18]. For instance, Aguirre et al have recently employed Cu 2 O coated by TiO 2 for improving photocatalytic stability and performance [16].…”

POD Nanozyme optimized by charge separation engineering for light/pH activated bacteria catalytic/photodynamic therapy

“…Bi 2 MoO 6 is an inorganic semiconductor photocatalyst and has been widely applied in pollutant removal, biosensor, and so on. 18 – 22 However, the catalytic activity of pure Bi 2 MoO 6 is finite owing to its rapid electron-hole recombination rate and low carrier mobility. To address these deficiencies, plasmonic metal materials (for example, Au, Ag) that commonly possess negative permittivity, have been introduced to improve the catalytic performance with the aid of visible light by the increment of charge separation lifetimes and interfacial charge transfer capability.…”

In situ sonochemical synthesis of flower-like N-graphyne/BiOCl0.5Br0.5 microspheres for efficient removal of levofloxacin

“…Moreover, it is obvious that 1 wt% N-GY/ BiOCl 0.5 Br 0.5 shows competitive photocatalytic activity in comparison with other bismuth-based photocatalysts as shown in Table 2. [40][41][42][43][44][45][46]…”