Effects of the Structure of TiO2 Nanotube Arrays on Its Catalytic Activity for Microbial Fuel Cell
Effects of the Structure of TiO2 Nanotube Arrays on Its Catalytic Activity for Microbial Fuel Cell
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TiO2纳米管阵列结构对其微生物燃料电池催化活性的影响
DOI：
10.1002/gch2.201800084
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发表时间：
2019
影响因子：
4.9
通讯作者：
Yang Zhang
中科院分区：
文献类型：
--
作者：
Tao Guo;Changzheng Wang;Ping Xu;Cuimin Feng;Shuai Si;Yajun Zhang;Qiang Wang;Mengtong Shi;Fengnan Yang;Jingxiao Wang;Yang Zhang
为了提高微生物燃料电池（MFC）的废水处理和化学需氧量降解能力，分别在HF和NH 4F溶液中，采用阳极氧化法在Ti箔上制备了TiO 2纳米管阵列（TNA）（以下分别记为TNA-HF和TNA-NF）。通过形貌和光谱表征，揭示了两种TNA的差异。应该强调的是，具有适当尺寸的3D TNA-NF可以为高光催化活性做出积极贡献。与TNA-HF相比，3D TNA-NF样品作为MFC阳极在电流产生方面表现出显著增强。特别是，TNA-NF的性能比TNA-HF高近1.23倍，比碳毡高近两倍。研究发现，两种TiO 2基阳极具有不同的电导率和腐蚀电位，这是导致其电流产生性能差异的原因。基于实验结果，优异的稳定性，可靠性和低成本，TNA-NF可以被认为是一种有前途的和可扩展的MFC生物阳极材料。
To enhance the microbial fuel cell (MFC) for wastewater treatment and chemical oxygen demand degradation, TiO2 nanotubes arrays (TNA) are successfully synthesized on Ti foil substrate by the anodization process in HF and NH4F solution, respectively (hereafter, denoted as TNA‐HF and TNA‐NF). The differences between the two kinds of TNA are revealed based on their morphologies and spectroscopic characterizations. It should be highlighted that 3D TNA‐NF with an appropriate dimension can make a positive contribution to the high photocatalytic activity. In comparison with the TNA‐HF, the 3D TNA‐NF sample exhibits a significant enhancement in current generation as the MFC anode. In particular, the TNA‐NF performs nearly 1.23 times higher than the TNA‐HF, and near twofold higher than the carbon felt. It is found that the two kinds of TiO2‐based anodes have different conductivities and corrosion potentials, which are responsible for the difference in their current generation performances. Based on the experimental results, excellent stability, reliability, and low cost, TNA‐NF can be considered a promising and scalable MFC bioanode material.