Herein, we designed vertically aligned TiO2 nanotube arrays, in which a very thin disordered overlayer approximately a few nm thick was formed via a room-temperature solution process. At the optimal overlayer thickness, the TiO2 nanotube arrays yielded a photocurrent density of up to ∼1.75 mA cm-2 at 1.23 V vs. RHE, approximately twice that of the pristine one.
Bibliographical noteFunding Information:
This work was supported in part by the Yonsei University. Future-leading Research Initiative of 2015(2015-22-0067). This work was partially supported by the NRF of Korea Grant funded by the Ministry of Science, ICT and Future Planning (NRF- 2013R1A2A1A09014038, 2015M1A2A2074663, C1 Gas Refinery Program (2016M3D3A1A01913254)).
© 2016 The Royal Society of Chemistry.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Surfaces, Coatings and Films
- Metals and Alloys
- Materials Chemistry