Electrochemical Peroxodisulfate (PDS) Generation on a Self-Doped TiO2 Nanotube Array Electrode,Industrial & Engineering Chemistry Research

当前位置： X-MOL 学术 › Ind. Eng. Chem. Res. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Electrochemical Peroxodisulfate (PDS) Generation on a Self-Doped TiO2 Nanotube Array Electrode
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-08-10 , DOI: 10.1021/acs.iecr.8b01208
Jiye Kim ₁ , Changha Lee ₂ , Jeyong Yoon _{1,

3}

Affiliation

Peroxodisulfate (PDS, S₂O₈^2–) is one of the strong oxidants (E°[S₂O₈^2–/HSO₄^–] = 2.12 V_NHE), which is widely used for radical polymerization or wastewater treatment. In electrochemical PDS generation, its efficiency highly depends on the •OH generating electrode materials. A boron-doped diamond (BDD) used in electrochemical PDS generation is very expensive prompting the need for new electrode materials for PDS generation. This study reports the self-doped TiO₂ nanotube array electrodes (blue and black TNAs) for PDS generation which are cheap and effective for generating a significant amount of •OH and comparable to BDD electrodes. Blue and black TNA electrodes were excellent for PDS generation exhibiting high current efficiencies for PDS generation (46% and 22%, respectively). Similar to the BDD electrode, it was also confirmed that •OH was the key precursor to the PDS generation on the self-doped TNA electrodes from the linear relationship between the PDS generation rate and •OH generation.

中文翻译：

自掺杂TiO ₂纳米管阵列电极上的电化学过二硫酸盐（PDS）生成

过二硫酸盐（PDS，S ₂ O ₈^2–）是一种强氧化剂（E °[S ₂ O ₈^2– / HSO ₄^– ] = 2.12 V _NHE），广泛用于自由基聚合或废水处理。在电化学PDS生成中，其效率高度取决于生成•OH的电极材料。用于电化学PDS生成的掺硼金刚石（BDD）非常昂贵，这促使需要用于PDS生成的新型电极材料。这项研究报告了自掺杂的TiO ₂用于PDS生成的纳米管阵列电极（蓝色和黑色TNA）便宜且有效地生成了大量的•OH，与BDD电极相当。蓝色和黑色TNA电极非常适合PDS生成，对PDS生成具有高电流效率（分别为46％和22％）。与BDD电极相似，从PDS生成速率与•OH生成之间的线性关系，还可以确定•OH是自掺杂TNA电极上PDS生成的关键前体。

更新日期：2018-08-11

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南