Fabrication of Ti/TiO2/SnO2-Sb-Ir/SnO2-Sb-Ni Using Three Kinds of TiO2 Interlayer and an Optimized TiO2-Nanotube Interlayer-Based Anode for Electrochemical Treatment of Wastewater

Shao, Mengyao; Hu, Bin; Ge, Shengyan; Zhou, Xingfu

doi:10.1007/s11664-022-10070-6

Cited by 8 publications

(1 citation statement)

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“…In addition to the preparation method, there is also a growing focus on the selection of substrate materials for electrode fabrication, particularly regarding the chemical modification of titanium substrates [15]. The vertically aligned arrays of three-dimensional TiO 2 nanotubes (TNTs) on a Ti substrate, which function as micro-structured tubular supports for the active SnO 2 layer, have garnered significant attention in recent years due to their numerous advantages for coating deposition.…”

Section: Introductionmentioning

confidence: 99%

Effects of Rare Earth Doping on Structural and Electrocatalytic Properties of Nanostructured TiO2 Nanotubes/SnO2-Sb Electrode for Electrochemical Treatment of Industrial Wastewater

Yang,

Guo

2023

Separations

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The solvothermal synthesis technique was employed to successfully fabricate a series of rare earth doped SnO2-Sb electrodes on the TNTs array substrate, serving as anode material for electrocatalytic degradation of phenol. The electrode doped with rare earth elements demonstrated superior electrocatalytic activity and stability in comparison to the undoped electrode. The influence of adding rare earth elements (i.e., Gd and Nd) into the precursor solution on the structural and property of TNTs/SnO2-Sb electrodes was studied in detail. The results obtained from SEM and XRD indicated that, compared to TNTs/SnO2-Sb-Nd, TNTs/SnO2-Sb-Gd exhibited a finer grain size due to the smaller ionic radius of the Gd element. This facilitated its incorporation into the SnO2 lattice interior and inhibited grain growth, resulting in a significant decrease in particle size for exposing more active sites. The influence mechanism of rare earth doping on electrochemical activity was investigated through XPS, EPR, LSV, EIS and Hydroxyl radicals (•OH) generation tests. The results demonstrated that the enhanced electrocatalytic activity can be attributed to an increased generation of oxygen vacancies on the electrode surface, which act as active sites for enhancing the adsorption of oxygen species and promoting •OH generation.

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Section: Introductionmentioning

confidence: 99%