62 research outputs found
Genetic Variance of Wild \u3ci\u3eAgrostis stolonifera\u3c/i\u3e L. Germplasm Resources Based on the Peroxidase Isoenzyme
ISSR Analysis on Genetic Diversity of Wild \u3ci\u3eAgrostis stolonifera\u3c/i\u3e L. Germplasm Resources
Graphene-modified nickel foam electrode for cathodic degradation of nitrofuranzone: Kinetics, transformation products and toxicity
Simple, efficient, and durable electrodes are highly demanded for practical electrochemical process. In this study, a reduced graphene oxide modified nickel foam electrode (GR-Ni foam) was facilely prepared via one-step cyclic voltammetry electrodeposition of graphene oxide suspension onto the Ni foam. The electrochemical degradation of nitrofuranzone (NFZ, a kind of typical antibiotics) was studied on the GR-Ni foam cathode. The cyclic voltammetry and electrochemical impedance spectra analysis confirmed that presence of GR loading accelerated the electron transfer from the cathode surface to NFZ. With the applied cathode potential of â1.25 V (vs. Ag/AgCl), the removal efficiency of NFZ (C0 = 20 mg Lâ1) at the GR-Ni foam electrode reached up to 99 % within 30 min, showing a higher reaction rate constant (0.1297 minâ1) than 0.0870 minâ1 at the Pd-Ni foam and 0.0186 minâ1 at the Ni foam electrode. It was also found that the pH, dissolved oxygen and NFZ initial concentration have slight effect on NFZ degradation at the GR-Ni foam electrode. The reactions first occurred at nitro groups (-NO2), unsaturated C=N bonds and N-N bonds to generate furan ring-containing products, and then these products were transformed into linear diamine products. The direct reduction by electrons was mainly responsible for NFZ reduction at the GR-Ni foam electrode. Even after 18 cycles, the removal efficiency of NFZ still reached up to 98 % within 1 h. In addition, the cathodic degradation process could eliminate the antibacterial activity of NFZ. The GR-Ni foam electrode would have a great potential in electrochemical process for treating wastewater containing furan antibiotics
Graphene-modified nickel foam electrode for cathodic degradation of nitrofuranzone: Kinetics, transformation products and toxicity
Simple, efficient, and durable electrodes are highly demanded for practical electroÂchemical process. In this study, a reduced graphene oxide modified nickel foam electrode (GRâNi foam) was facilely prepared via one-step cyclic voltammetry electrodeposition of graÂphene oxide suspension onto the Ni foam. The electrochemical degradation of nitrofuranÂzone (NFZ, a kind of typical antibiotics) was studied on the GR-Ni foam cathode. The cyclic voltammetry and electrochemical impedance spectra analysis confirmed that presence of GR loading accelerated the electron transfer from the cathode surface to NFZ. With the applied cathode potential of â1.25 V (vs. Ag/AgCl), the removal efficiency of NFZ (C0 = 20 mg Lâ1) at the GR-Ni foam electrode reached up to 99 % within 30 min, showing a higher reaction rate constant (0.1297 minâ1) than 0.0870 minâ1 at the Pd-Ni foam and 0.0186 minâ1 at the Ni foam electrode. It was also found that the pH, dissolved oxygen and NFZ initial concentration have slight effect on NFZ degradation at the GR-Ni foam electrode. The reactions first occurred at nitro groups (-NO2), unsaturated C=N bonds and N-N bonds to generate furan ring-containing products, and then these products were transformed into linear diamine products. The direct reduction by electrons was mainly responsible for NFZ reduction at the GR-Ni foam electrode. Even after 18 cycles, the removal efficiency of NFZ still reached up to 98 % within 1 h. In addition, the cathodic degradation process could eliminate the antibacterial activity of NFZ. The GR-Ni foam electrode would have a great potential in electrochemical process for treating wastewater containing furan antibiotics
ISSR Analysis on Genetic Diversity of Wild \u3ci\u3eAgrostis stolonifera\u3c/i\u3e L. Germplasm Resources
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