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[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()
二氧化钛纳米管的表面形态对生物电化学系统性能的影响评价
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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
二氧化钛纳米管的表面形态对生物电化学系统性能的影响评价
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
张田1;  隆曦孜1;  曹羡2;  李先宁1
1东南大学能源与环境学院, 南京210096; 2Department of Civil and Environmental Engineering, Tohoku University, Sendai 980-8579, Japan
Keywords:
bioelectrochemical system;  titania nanotube arrays;  anodization;  current generation;  surface morphology
生物电化学系统;  二氧化钛纳米管阵列;  阳极氧化;  产电;  表面形态
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.
为了探究二氧化钛半导体的表面形态和电阻对电流输出的影响, 在不同的电解液温度下合成二氧化钛纳米管阵列生物阳极(TNA), 从而改变纳米管的长度和表面粗糙度.结果表明:当阳极氧化温度从30 ℃升高到75 ℃时, TNA的长度从1.459 μm增加到4.183 μm, 高温下得到较长纳米管的电阻较大, 不利于电子传递至电极;另一方面, 较高的温度下制备的纳米管顶端粗糙度明显提高, 更大的粗糙度有利于产电菌生物膜的附着.因此, 45 ℃阳极氧化条件下制备的样品输出电流最高.与30 ℃阳极氧化条件下制备的TNA电极相比, 45 ℃的样品平衡了电阻与粗糙度, 具有更高的电子传输速率, 其电流输出密度和脱色率分别增加了1.5倍和0.8倍. 因此, 适当的TNA表面形态能提高电流输出和废水处理方面的潜能.

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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.
Last Update: 2020-06-20