Reduced TiO2 nanotube array as an excellent cathode for hydrogen evolution reaction in alkaline solution

Xuelan Hou*, Kerttu Aitola, Hua Jiang, Peter D. Lund, Yongdan Li

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

5 Sitaatiot (Scopus)
29 Lataukset (Pure)

Abstrakti

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.

AlkuperäiskieliEnglanti
Sivut3-9
Sivumäärä7
JulkaisuCatalysis Today
Vuosikerta402
Varhainen verkossa julkaisun päivämäärä23 jouluk. 2021
DOI - pysyväislinkit
TilaJulkaistu - 15 syysk. 2022
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

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