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

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...

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

Nanotechnology ◽

10.1088/1361-6528/ac3788 ◽

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.

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Formation mechanism of multilayer TiO2 nanotubes in HBF4 electrolyte

RSC Advances ◽

10.1039/c7ra05624a ◽

2017 ◽

Vol 7 (53) ◽

pp. 33526-33531 ◽

Cited By ~ 2

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.

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Studies on preparation and formation mechanism of poly(lactide-co-glycolide) microrods via one-step electrospray and an application for drug delivery system

European Polymer Journal ◽

10.1016/j.eurpolymj.2021.110372 ◽

2021 ◽

Vol 148 ◽

pp. 110372

Author(s):

Junwei Xu ◽

Kun Li ◽

Meili Liu ◽

Xuenan Gu ◽

Ping Li ◽

...

Keyword(s):

Drug Delivery ◽

Drug Delivery System ◽

Delivery System ◽

Formation Mechanism ◽

One Step

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One Step Synthesis and Growth Mechanism of Carbon Nanotubes

Journal of Material Science and Technology ◽

10.1016/j.jmst.2013.09.005 ◽

2014 ◽

Vol 30 (2) ◽

pp. 112-116 ◽

Cited By ~ 8

Author(s):

Akshay Kumar ◽

K. Singh ◽

O.P. Pandey

Keyword(s):

Carbon Nanotubes ◽

Growth Mechanism ◽

One Step

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One-step solution synthesis and formation mechanism of flower-like ZnO and its structural and optical characterization

Ceramics International ◽

10.1016/j.ceramint.2016.03.200 ◽

2016 ◽

Vol 42 (9) ◽

pp. 10751-10757 ◽

Cited By ~ 32

Author(s):

Yongqian Wang ◽

Qun Ma ◽

Hanxiang Jia ◽

Zhengshu Wang

Keyword(s):

Formation Mechanism ◽

Optical Characterization ◽

Solution Synthesis ◽

One Step

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

Small ◽

10.1002/smll.201001849 ◽

2010 ◽

Vol 7 (4) ◽

pp. 445-449 ◽

Cited By ~ 90

Author(s):

Xijin Xu ◽

Xiaosheng Fang ◽

Tianyou Zhai ◽

Haibo Zeng ◽

Baodan Liu ◽

...

Keyword(s):

Formation Mechanism ◽

Tio2 Nanotubes ◽

Photocatalytic Properties ◽

Porous Walls

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

Molecules ◽

10.3390/molecules25092121 ◽

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.

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

Scientific Reports ◽

10.1038/s41598-020-73567-2 ◽

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.

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