Defective Black TiO2 Nanotube Arrays for Enhanced Photocatalytic and Photoelectrochemical Applications

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)7372-7378
Journal / PublicationACS Applied Nano Materials
Issue number11
Online published4 Nov 2019
Publication statusPublished - 22 Nov 2019


Black TiO2 is of great interest for efficient solar harvest in photocatalytic and photoelectrochemical applications. In this work, we report a convenient, low-cost, and safe method for producing black TiO2 nanotube arrays (TNTAs). By a simple soaking in an ethylene glycol (EG) solution of NH4F, the as-anodic TNTAs turn black, with a substantial amount of oxygen vacancies and Ti3+ sites induced. The thus-obtained black TNTAs deliver greatly enhanced photoelectrochemical and photocatalytic performance of high stability.

Research Area(s)

  • anodization, black TiO2, photocatalysis, photoelectrocatalysis, TiO2 nanotube arrays