Rational engineering of morphology modulated Ti-ZnO thin films coupled monolayer Ti3C2 MXene for efficient visible light PEC water splitting activity br
- Authors
- Sreedhar, Adem; Ta, Qui Thanh Hoai; Noh, Jin-Seo
- Issue Date
- Sep-2022
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Grain growth; Interfaces; Optical properties; Carbides; Water splitting
- Citation
- JOURNAL OF ELECTROANALYTICAL CHEMISTRY, v.921
- Journal Title
- JOURNAL OF ELECTROANALYTICAL CHEMISTRY
- Volume
- 921
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/85487
- DOI
- 10.1016/j.jelechem.2022.116703
- ISSN
- 1572-6657
- Abstract
- Novel morphology modulated monolayer 2D Ti3C2 MXene coupled Ti-doped ZnO (Ti3C2/Ti-ZnO) photoelectrode developed for exploring interfacial charge transfer and visible-light photoelectrochemical (PEC) water splitting. Here, we altered the flake-like ZnO into grain-like morphology by selective Ti (2 at.%) doping into ZnO under simultaneous radio frequency (RF) and direct-current (DC) magnetron sputtering. This study describes the versatility of the Ti3C2/Ti-ZnO (monolayer/grain-like) interface. Transmission electron microscopy findings suggest that Ti3C2 MXene developed in a monolayer. Moreover, scanning electron microscopy proved a consistent grain-like Ti-ZnO thin film interface with monolayer Ti3C2 MXene. We also find Hall effect measurements to uncover the interfacial impact on charge carrier generation. The fabricated monolayer/grainlike interface modulated the band gap towards visible region. With all the above benefits, Ti3C2/Ti-ZnO achieved stable visible water splitting for 21 min. Overall, these findings provide the potentiality of Ti3C2/ Ti-ZnO photoelectrode to extend the PEC activity towards the visible region.
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Collections - 바이오나노대학 > 나노물리학과 > 1. Journal Articles
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