Effect of the oxygen-containing functional group of graphene oxide on the aqueous cadmium ions removal

Remarkable Improvement in Photocatalytic Performance for Tannery Wastewater Processing via SnS2 Modified with N‐Doped Carbon Quantum Dots: Synthesis, Characterization, and 4‐Nitrophenol‐Aided Cr(VI) Photoreduction

“…For details, both the binding energies of S 2p 1/2 at 161.45 eV and S 2p 3/2 at 162.65 eV in 40 mol% N 23 ‐CQDs/SnS 2 are shifted about 0.4 eV toward the lower energy relative to the bonding energy of pristine SnS 2 (Figure e). In addition, with regard to N 1s spectrum of 40 mol% N 23 ‐CQDs/SnS 2 , the bonding energy of CN group at 401.83 eV was shifted 0.16 eV toward lower energy, and the bonding energy of CN group at 402 eV was shifted 0.01 eV to the low side relative to those of N 23 ‐CQDs (Figure b); ii) Oxygen‐containing functional groups on the surface of N 23 ‐CQDs were mainly phenolic hydroxyl and carboxyl groups, which could provide adsorption sites for metal ions, as reported in literature . As shown in Figure f, Sn 3d 5/2 and Sn 3d 3/2 of the pristine SnS 2 are located at 487.1 and 495.5 eV, respectively, with a spin‐orbital splitting energy of 8.4 eV.…”

A sensitive, selective and rapid determination of lead(II) ions in real-life samples using an electrochemically reduced graphene oxide-graphite reinforced carbon electrode

“…In the case of GO-GRC, the surface morphology of GO film presents a uniform serrated and crumpled surface due to the drying process of the material (Fig. 1b), similar to that reported by Bian et al [29]. Fig.…”

Efficient removal of aqueous Pb(II) using partially reduced graphene oxide-Fe3O4

“…Preparation of GO. GO was one-pot synthesized by oxidizing natural flake graphite based on new modified of Hummers method developed by our group (Bian et al, 2015). In a typical experiment, natural flake graphite (10 g), KMnO 4 (6 g), and boric acid (0.01 g) were dispersed in concentrated sulfuric acid (100 mL), stirred for 1.5 h under a temperature of 5 C in an ice bath.…”