Carboxyl-functionalized biochar derived from walnut shells with enhanced aqueous adsorption of sulfonamide antibiotics.

The novel HNO-modifitied biochar (NBC) was synthesized from walnut shell. The NBC was characterized from scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy and Raman spectrum. The NBC was then used in the adsorption of sulfadiazine, sulfamethazine and sulfachloropyridazine from aqueous solution.

Magnetic Solid-Phase Extraction Based on Fe₃O₄/g-C₃N₄ Nanocomposite for the Determination of Polychlorinated Biphenyls and Polychlorinated Diphenyl Ethers in Environmental Waters.

The graphitic carbon nitride (g-C₃N₄) and the Fe₃O₄/g-C₃N₄ magnetic materials were synthesized in this paper. The structures of the materials were confirmed by a series of analysis. The Fe₃O₄/g-C₃N₄ was then used as a sorbent to adsorb polychlorinated diphenyl ethers and polychlorinated biphenyls.

Fabrication of Novel Z-Scheme Bi₂WO/NaBiO₃ Nanocomposites with Enhanced Photocatalytic Activity in the Degradation of 2,3-Dichlorophenol.

The Z-scheme Bi₂WO/NaBiO₃ nanocomposites were first fabricated by a facile hydrothermal method, and were then characterized by X-ray diffraction, transmission electron microscopy, scanning electron microscopy, energy dispersive spectrometer, Fourier-transform-infrared spectroscopy, X-ray photoelectron spectroscopy and N₂ adsorption-desorption. The as-prepared Bi₂WO/NaBiO₃ nanocomposites exhibit outstanding photocatalytic activity and recyclability. A 98.

Synthesis of Bi₂MoO/Bi₂Ti₂O Z-Scheme Heterojunction as Efficient Visible-Light Photocatalyst for the Glycolic Acid Degradation.

A novel Bi₂MoO/Bi₂Ti₂O heterojunction photocatalyst was firstly prepared by a simple solvothermal route. The as-synthesized photocatalysts were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, ultraviolet-visible diffuse reflectance spectroscopy and photoluminescence spectra. The effect of the material ratio, solution pH, and the salinity on glycolic acid degradation were discussed.

Magnetic adsorbent based on mesoporous silica nanoparticles for magnetic solid phase extraction of pyrethroid pesticides in water samples.

Mesoporous KIT-6-magnetite composite (FeO@SiO@KIT-6) was successfully prepared and characterized by transmission electron microscopy, scan electron microscopy, elemental mapping, energy dispersive X-ray spectrum, Fourier transform infrared spectroscopy, thermal gravimetric analysis, X-ray powder diffraction, Brunauer Emmett Teller analysis and magnetic property analysis. It was then applied as adsorbent for magnetic solid phase extraction of fenpropathrin, lambda-cyhalothrin, S-fenvalerate and bifenthrin from water samples before analyzed by high performance liquid chromatography-ultraviolet detector. A few factors impacting extraction were studied.