Journal
LANGMUIR
Volume 29, Issue 19, Pages 5911-5919Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la400586r
Keywords
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Funding
- National Science Foundation [CMMI-0969888]
- Chinese Government
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [0969888] Funding Source: National Science Foundation
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Structural observations of the transition of TiO2 nanopores into nanotubes by increasing the OH- concentration in the electrolyte challenge the validity of existing formation mechanisms of anodic TiO2 nanotubes. In this study, dehydration of titanium hydroxide in the cell wall is proposed as the mechanism that leads to the separation of neighboring nanotubes. Based on this understanding, bamboo-type TiO2 nanotubes with large surface area and excellent interconnectivity are achieved by cycling high and low applied potentials. After thermal treatment in a H-2 atmosphere, the bamboo-type TiO2 nanotubes show large photoelectrochemical water splitting efficiency and supercapacitors performance.
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