Abstract
A multiwalled carbon nanotube (MWNT) was physically cured with oxygen plasma treatment, and the as-prepared oxygenated MWNT (OMWNT) was incorporated into TiO2 nanopowders to prepare a spray-coatable OMWNT-TiO2 composite suspension. The composite layer was directly formed on a fluorinated tin oxide surface by spray coating and served as a photoanode of a photoelectrochemical cell (PEC). The cell performance was optimized in terms of the plasma treatment time and compared with a conventional PEC, showing 37% increased energy conversion efficiency. The efficiency improvement confirmed by the electrochemical impedance spectra was related to the reduced charge-transfer resistance and efficient electron transport through the OMWNT network.
Original language | English |
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Pages (from-to) | 9085-9091 |
Number of pages | 7 |
Journal | Journal of Physical Chemistry C |
Volume | 119 |
Issue number | 17 |
DOIs | |
Publication status | Published - 2015 Apr 30 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Energy(all)
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films