TiO<sub>2</sub>纳米管阵列电合成的扩散-反应耦合强化机制研究

周黄; 常禹; 范兴; 张楠楠; 陶长元

doi:10.11949/0438-1157.20191292

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TiO₂纳米管阵列电合成的扩散-反应耦合强化机制研究

催化、动力学与反应器 | 更新时间：2025-11-25

- TiO₂纳米管阵列电合成的扩散-反应耦合强化机制研究
- Study on diffusion-reaction coupled strengthening mechanism based on electrosynthesis of titanium dioxide nanotube array
- 化工学报 2020年71卷第10期页码：4663-4673
- 作者机构：
  
  重庆大学化学化工学院，重庆 401331
- 作者简介：
  
  周黄（1993—），男，博士研究生，zhouhuang2019@163.com
  张楠楠（1988—），女，博士，讲师，zhangnn@cqu.edu.cn
- 基金信息：
  
  国家自然科学基金项目(21905034;21676033);教育部霍英东基金项目(161067)
- DOI：10.11949/0438-1157.20191292
  中图分类号： TQ 134.1
- 收稿：2019-10-30，
  
  修回：2020-03-09，
  
  纸质出版：2020-10-05
- 稿件说明：
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周黄, 常禹, 范兴, 张楠楠, 陶长元. TiO₂纳米管阵列电合成的扩散-反应耦合强化机制研究[J]. 化工学报, 2020, 71(10): 4663-4673 DOI: 10.11949/0438-1157.20191292.

ZHOU Huang, CHANG Yu, FAN Xing, ZHANG Nannan, TAO Changyuan. Study on diffusion-reaction coupled strengthening mechanism based on electrosynthesis of titanium dioxide nanotube array[J]. CIESC Journal, 2020, 71(10): 4663-4673
周黄, 常禹, 范兴, 张楠楠, 陶长元. TiO₂纳米管阵列电合成的扩散-反应耦合强化机制研究[J]. 化工学报, 2020, 71(10): 4663-4673 DOI: 10.11949/0438-1157.20191292. DOI：

ZHOU Huang, CHANG Yu, FAN Xing, ZHANG Nannan, TAO Changyuan. Study on diffusion-reaction coupled strengthening mechanism based on electrosynthesis of titanium dioxide nanotube array[J]. CIESC Journal, 2020, 71(10): 4663-4673 DOI： 10.11949/0438-1157.20191292.

摘要

研究针对TiO

纳米管材料批量电合成过程的结构有序性耗失问题，考察了TiO

纳米管阵列生长过程中的非线性动力学机制，及其随电解时间等的演变机制。结合扫描电镜（SEM）及电化学分析表明，TiO

纳米管阵列形成是低聚羟基钛中间体扩散-反应耦合过程中的自组织行为。研究建立了电合成体系的反应-扩散动力学方程组，并对其进行了线性稳定性分析，阐释了TiO

纳米管阵列有序结构形成，乃至出现周期性电化学振荡的参数阈值空间，在此基础上提出了TiO

纳米管阵列电合成过程的扩散-反应耦合强化机制。研究提出的非线性动力学机制广泛存在于各种金属的电溶过程中，并对产物结构及过程电耗有深刻影响。这也为新型纳米材料的批量电合成过程强化提供了理论依据。

Abstract

As an excellent semiconductor material

the TiO

is widely used in the areas of photocatalysis

solar cells

and biomedical devices. Various technologies have been established to prepare TiO

nanotube array. These technologies mainly include numerous hydrothermal methods

template method

sol-gel method

and anodic oxidation method. Among them

the anodic oxidation method attracts much attention because of its highly ordered

uniform distribution and variable structure control. At present

the modified preparation of TiO

nanotube array is still studied by researchers. However

basic study on the kinetic mechanism of the growth process of nanotube array is rare. Herein

we proposed the diffusion-reaction coupled strengthening mechanism based on the electrosynthesis of titanium dioxide nanotube array. Furthermore

the evolution of TiO

nanotube array with electrolysis time was investigated

and the nonlinear dynamic mechanism of TiO

nanotube array structure growth process was discussed in combination with SEM and electrochemical impedance analysis. It was found that the formation of TiO

nanotube array was a self-organization behavior in the diffusion-reaction coupling process of oligomer hydroxyl titanium intermediates. Moreover

the reaction kinetics mechanism was established by analyzing the electrochemical growth mechanism

and its linear stability was analyzed. Besides

the parameter threshold space formed by the ordered structure in TiO

nanotube array and the accompanying electrochemical oscillation were explained

and its evolution process was also discussed. After optimization

TiO

nanotube array with ordered structure was prepared. It revealed the internal mechanism of diffusion-reaction coupling in the electrosynthesis of TiO

nanotube array. In addition

the nonlinear dynamic mechanism proposed in this paper exists widely in the electrodissolution process of various metals

which has a significant influence on the structure formation of products and the power consumption of reaction process. This also provides a theoretical basis for strengthening the batch electrosynthesis process of new nanomaterials.

关键词

Keywords

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TiO2纳米管阵列电合成的扩散-反应耦合强化机制研究

Study on diffusion-reaction coupled strengthening mechanism based on electrosynthesis of titanium dioxide nanotube array

DOI：10.11949/0438-1157.20191292

摘要

Abstract

关键词

Keywords

references

TiO₂纳米管阵列电合成的扩散-反应耦合强化机制研究