[1] Zhang Tian, Long Xizi, Cao Xian, Li Xianning, et al. Influence evaluation of titania nanotube surface morphologyon the performance of bioelectrochemical systems [J]. Journal of Southeast University (English Edition), 2020, 36 (2): 227-233. [doi:10.3969/j.issn.1003-7985.2020.02.014]

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Influence evaluation of titania nanotube surface morphologyon the performance of bioelectrochemical systems()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

36

Issue:

2020 2

Page:

227-233

Research Field:

Environmental Science and Engineering

Publishing date:

2020-06-20

Info

Title:

Influence evaluation of titania nanotube surface morphologyon the performance of bioelectrochemical systems

Author(s):

Zhang Tian¹;  Long Xizi¹;  Cao Xian²;  Li Xianning¹

¹School of Energy and Environment, Southeast University, Nanjing 210096, China
²Department of Civil and Environmental Engineering, Tohoku University, Sendai 980-8579, Japan

Keywords:

bioelectrochemical system;  titania nanotube arrays;  anodization;  current generation;  surface morphology

PACS:

X382

DOI:

10.3969/j.issn.1003-7985.2020.02.014

Abstract:

In order to investigate the effect of the surface morphology and resistance of the TiO₂ semiconductor on current output, TiO₂ nanotube array bio-anodes(TNA)are synthesized at different electrolyte temperatures, thereby changing the length and surface roughness of the nanotubes. When the anodizing temperature is increased from 30 to 75 ℃, the length of the nanotubes increases from 1.459 to 4.183 μm, which hinders the transfer of extracellular electrons to the electrodes. On the other hand, the surface roughness of TNA is significantly improved at higher temperatures, which is conducive to electron transfer. Therefore, samples processed at 45 ℃ have the best current output performance. Compared with the treatment at 30 ℃ under anodization, samples processed at 45 ℃ can balance the resistance and roughness and have a higher electron transfer rate; the current output density of which is increased by 1.5 times, and the decolorization rate is increased by 0.8 times. Therefore, proper TNA surface morphology can improve the current output and the potential of wastewater treatment.

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Memo

Memo:

Biographies: Zhang Tian(1994—), female, graduate; Li Xianning(corresponding author), male, doctor, professor, lxnseu@163.com.
Foundation items: The National Major Science and Technology Project(No.2017ZX07202004-005), the Natural Science Foundation of Jiangsu Province(No.BK20171351), the Japan Society for the Promotion of Science(No.P 19056), the National Natural Science Foundation of China(No.51828801), the Fundamental Research Funds for the Central Universities(No.2242016K41042).
Citation: Zhang Tian, Long Xizi, Cao Xian, et al.Influence evaluation of titania nanotube surface morphology on the performance of bioelectrochemical systems[J].Journal of Southeast University(English Edition), 2020, 36(2):227-233.DOI:10.3969/j.issn.1003-7985.2020.02.014.

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