Fabrication and Electrochemical Properties of a SnO₂-Sb Anode Doped with Ni-Nd for Phenol Oxidation

Abstract

A novel Ni-Nd co-doped SnO 2 -Sb anode with macroporous titanium sheet as substrate (mp-Ti/SnO 2 -Sb-Ni-Nd anode) was prepared by modified sol-gel method. The surface morphology, the crystal structure and the valence of the dopants were characterized by SEM, XRD and XPS, respectively. In addition, CV, LSV, EIS, chronoamperometry measurements and accelerated lifetime test were also carried out to study the electrochemical properties and stability of the anodes. The results indicated that mp-Ti/SnO 2 -Sb-Ni-Nd anode possessed a lower charge transfer resistance and a longer service life than other modified SnO 2 -Sb anodes. Electrocatalytic oxidation of phenol was studied under a constant current density of 10 mA • cm −2 at 25 • C to evaluate the potential applications of the electrodes. The co-doping of Ni-Nd significantly enhanced the degradation of phenol and the total organic carbon (TOC) removal efficiency on SnO 2 -Sb anode, which might be attributed to the improved generation of reactive oxygen species (ROS) to the solution and the dominant action of indirect oxidation.

Modification of a Pd-loaded electrode with a carbon nanotubes–polypyrrole interlayer and its dechlorination performance for 2,3-dichlorophenol

“…CNTs (>95%, length of 10-30 mm, outer diameter of 20-30 nm) were obtained from Beijing Nachen Technology Co. Other chemicals and materials were similar to our previous research. 28,29 2.2 Preparation of Pd/CNTs-PPy/Ti composite electrode 2.2.1 Pretreatment of meshed Ti. Ti mesh size and its pretreatment method were same as those in our previous research.…”

Electrochemical degradation of ciprofloxacin with a Sb-doped SnO2 electrode: performance, influencing factors and degradation pathways

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Deposition efficiency in the preparation of ozone-producing nickel and antimony doped tin oxide anodes

“…This was later discussed to be a consequence of surface enrichment of Sb [9,14]. Other studies have also reported an enrichment of either Sb or Ni, or both [24][25][26]. Most authors correlate this to surface enrichment.…”