Reduced TiO2 nanotube array as an excellent cathode for hydrogen evolution reaction in alkaline solution
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2022-09-15
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Language
en
Pages
7
3-9
3-9
Series
Catalysis Today, Volume 402
Abstract
Anodic TiO2 nanotube (TNT) arrays have been intensively investigated as anodes in water splitting (WS) cells because of their excellent chemical stability. However, anodic TNT is seldom considered as a cathode for the hydrogen evolution reaction (HER) in an electrochemical WS cell. This study shows that a reduced TNT (R-TNT) sample prepared with a cathodic reduction technique without loading any co-catalyst can achieve remarkable HER performance. At − 1.0 V vs reversible hydrogen electrode in 1 M NaOH in dark, R-TNT achieved a current of − 221 mA, which is 17000-times of that achieved when using TNT and 5-times of that with Ti-foil as cathode. Chronopotentiometry tests were carried out sequentially at @ −100, − 50 and − 10 mA for 24 h and decay rates of 1.3%, 5.2% and 18.4% were measured, which indicate a good stability of the R-TNT sample.Description
Funding Information: This work has been supported by the China Scholarship Council (CSC), No. 201706250038 , the Jane and Aatos Erkko Foundation ASPIRE project (Finland), Aalto University School of Science Project T30404 , and the Start-up Package of T10108 Professorship offered by Aalto University to Prof. Yongdan Li. Publisher Copyright: © 2021 The Authors
Keywords
Anodic oxidation, Cathode, Hydrogen evolution reaction, TiO nanotube, Water splitting
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Citation
Hou, X, Aitola, K, Jiang, H, Lund, P D & Li, Y 2022, ' Reduced TiO 2 nanotube array as an excellent cathode for hydrogen evolution reaction in alkaline solution ', Catalysis Today, vol. 402, pp. 3-9 . https://doi.org/10.1016/j.cattod.2021.12.009