scholarly journals Debunking six stages of current-time curve and the bilayer nanotubes obtained by one-step anodization of Zr

2022 ◽  
Author(s):  
Pengze Li ◽  
Heng Wang ◽  
Yilin Ni ◽  
Ye Song ◽  
Ming Sun ◽  
...  
Keyword(s):  
Formation Mechanism ◽  
Growth Mechanism ◽  
Tio2 Nanotubes ◽  
Time Curve ◽  
Current Time ◽  
One Step ◽  
Zro2 Nanotubes

The application and growth mechanism of anodic TiO2 nanotubes have been a hot topic in recent ten years, but the formation mechanism of anodic ZrO2 nanotubes is rarely studied. In...

A comparative study of two-step anodization with one-step anodization at constant voltage

2021 ◽  
Author(s):  
Huipeng Zeng ◽  
Chengyuan Li ◽  
Yuxin Dan ◽  
Yishan Lu ◽  
Weidong Sun ◽  
...  
Keyword(s):  
Tio2 Nanotubes ◽  
Ionic Current ◽  
Time Curve ◽  
Average Growth ◽  
Current Time ◽  
Self Organized ◽  
Electronic Current ◽  
Oxygen Bubble ◽  
One Step ◽  
First Time

Abstract Two-step anodization has been widely used because it can produce highly self-organized anodic TiO2 nanotubes, but the differences in morphology and current-time curve of one-step anodization and two-step anodization are rarely reported. Here, one-step anodization and two-step anodization were conducted at different voltages. By comparing the FESEM image of anodic TiO2 nanotubes fabricated by one-step anodization and two-step anodization, it was found that the variation of morphology characteristics is same with voltage. The distinction of morphology and current-time curve between one-step anodization and two-step anodization at the same voltage were analyzed: the nanotube average growth rate and porosity of two-step anodization are greater than that of one-step anodization. In the current-time curve, the duration of stage I and stage II in two-step anodization are significantly shorter than one-step anodization. The traditional field-assisted dissolution theory cannot explain the three stages of the current-time curves and their physics meaning under different voltages in the same fluoride electrolyte. Here, for the first time, the distinction between one-step anodization and two-step anodization was clarified successfully by the theories of ionic current and electronic current and oxygen bubble mould.

scholarly journals Formation mechanism of multilayer TiO2 nanotubes in HBF4 electrolyte

RSC Advances ◽  
2017 ◽  
Vol 7 (53) ◽  
pp. 33526-33531 ◽  
Author(s):  
Shaoyu Zhang ◽  
Mengshi Yu ◽  
Liming Xu ◽  
Siwei Zhao ◽  
Jianfei Che ◽  
...  
Keyword(s):  
Formation Mechanism ◽  
Tio2 Nanotubes ◽  
One Step

Multilayer anodic TiO2 nanotubes with A-shaped sidewalls are first fabricated in HBF4-containing electrolyte by a one-step galvanostatic anodization.

One Step Synthesis and Growth Mechanism of Carbon Nanotubes

2014 ◽  
Vol 30 (2) ◽  
pp. 112-116 ◽  
Author(s):  
Akshay Kumar ◽  
K. Singh ◽  
O.P. Pandey
Keyword(s):  
Carbon Nanotubes ◽  
Growth Mechanism ◽  
One Step

Tube-in-Tube TiO2 Nanotubes with Porous Walls: Fabrication, Formation Mechanism, and Photocatalytic Properties

Small ◽  
2010 ◽  
Vol 7 (4) ◽  
pp. 445-449 ◽  
Author(s):  
Xijin Xu ◽  
Xiaosheng Fang ◽  
Tianyou Zhai ◽  
Haibo Zeng ◽  
Baodan Liu ◽  
...  
Keyword(s):  
Formation Mechanism ◽  
Tio2 Nanotubes ◽  
Photocatalytic Properties ◽  
Porous Walls

scholarly journals All-Solid-State Lithium Ion Batteries Using Self-Organized TiO2 Nanotubes Grown from Ti-6Al-4V Alloy

Molecules ◽  
2020 ◽  
Vol 25 (9) ◽  
pp. 2121
Author(s):  
Vinsensia Ade Sugiawati ◽  
Florence Vacandio ◽  
Thierry Djenizian
Keyword(s):  
Cyclic Voltammetry ◽  
Solid State ◽  
Tio2 Nanotubes ◽  
Coulombic Efficiency ◽  
Lithium Ion ◽  
Electrochemical Anodization ◽  
Self Organized ◽  
Solid State Batteries ◽  
One Step ◽  
Tio2 Nts

All-solid-state batteries were fabricated by assembling a layer of self-organized TiO2 nanotubes grown on as anode, a thin-film of polymer as an electrolyte and separator, and a layer of composite LiFePO4 as a cathode. The synthesis of self-organized TiO2 NTs from Ti-6Al-4V alloy was carried out via one-step electrochemical anodization in a fluoride ethylene glycol containing electrolytes. The electrodeposition of the polymer electrolyte onto anatase TiO2 NTs was performed by cyclic voltammetry. The anodized Ti-6Al-4V alloys were characterized by scanning electron microscopy and X-ray diffraction. The electrochemical properties of the anodized Ti-6Al-4V alloys were investigated by cyclic voltammetry and chronopotentiometry techniques. The full-cell shows a high first-cycle Coulombic efficiency of 96.8% with a capacity retention of 97.4% after 50 cycles and delivers a stable discharge capacity of 63 μAh cm−2 μm−1 (119 mAh g−1) at a kinetic rate of C/10.

scholarly journals Non-enzymatic sensor for determination of glucose based on PtNi nanoparticles decorated graphene

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Risheng Li ◽  
Xu Deng ◽  
Longfei Xia
Keyword(s):  
Limit Of Detection ◽  
High Sensitivity ◽  
Glucose Detection ◽  
Serum Samples ◽  
Time Curve ◽  
Current Time ◽  
Glass Carbon ◽  
Graphene Glass ◽  
Ptni Alloy

Abstract Diabetes has become a universal epidemic in recent years. Herein, the monitoring of glucose in blood is of importance in clinical applications. In this work, PtNi alloy nanoparticles homogeneously dispersed on graphene (PtNi alloy-graphene) was synthesized as a highly effective electrode material for glucose detection. Based on the modified PtNi alloy-graphene/glass carbon (PtNi alloy-graphene/GC) electrode, it is found that the PtNi alloy-graphene/GC electrode exhibited excellent electrocatalytic performance on glucose oxidation. Furthermore, the results from amperometric current–time curve show a good linear range of 0.5–15 mM with the limit of detection of 16 uM (S/N = 3) and a high sensitivity of 24.03 uAmM−1 cm−2. On account of the good selectivity and durability, the modified electrode was successfully applied on glucose detection in blood serum samples.

scholarly journals A review of growth mechanism, structure and crystallinity of anodized TiO2 nanotubes

2013 ◽  
Vol 74 (12) ◽  
pp. 377-406 ◽  
Author(s):  
D. Regonini ◽  
C.R. Bowen ◽  
A. Jaroenworaluck ◽  
R. Stevens
Keyword(s):  
Growth Mechanism ◽  
Tio2 Nanotubes
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