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Multi-Leg TiO2 Nanotube Photoelectrodes Modified by Platinized Cyanographene with Enhanced Photoelectrochemical Performance
- Source :
- Catalysts, Volume 10, Issue 6, Catalysts, Vol 10, Iss 717, p 717 (2020)
- Publication Year :
- 2020
- Publisher :
- Multidisciplinary Digital Publishing Institute, 2020.
-
Abstract
- Highly ordered multi-leg TiO2 nanotubes (MLTNTs) functionalized with platinized cyanographene are proposed as a hybrid photoelectrode for enhanced photoelectrochemical water splitting. The platinized cyanographene and cyanographene/MLTNTs composite yielded photocurrent densities 1.66 and 1.25 times higher than those of the pristine MLTNTs nanotubes, respectively. Open circuit VOC decay (VOCD), electrochemical impedance spectroscopy (EIS), and intensity-modulated photocurrent spectroscopy (IMPS) analyses were performed to study the recombination rate, charge transfer characteristics, and transfer time of photogenerated electrons, respectively. According to the VOCD and IMPS results, the addition of (platinized) cynographene decreased the recombination rate and the transfer time of photogenerated electrons by one order of magnitude. Furthermore, EIS results showed that the (platinized) cyanographene MLTNTs composite has the lowest charge transfer resistance and therefore the highest photoelectrochemical performance.
- Subjects :
- Materials science
Technische Fakultät
Composite number
02 engineering and technology
Electron
lcsh:Chemical technology
010402 general chemistry
01 natural sciences
Catalysis
multi-leg TiO2 nanotube
lcsh:Chemistry
multi-leg TiO(2)nanotube
lcsh:TP1-1185
Physical and Theoretical Chemistry
Spectroscopy
Photocurrent
business.industry
Open-circuit voltage
charge transfer
photoanode
021001 nanoscience & nanotechnology
0104 chemical sciences
Dielectric spectroscopy
lcsh:QD1-999
Water splitting
Optoelectronics
ddc:620
0210 nano-technology
business
platinized cyanographene
photoelectrochemical properties
Order of magnitude
Subjects
Details
- Language :
- English
- ISSN :
- 20734344
- Database :
- OpenAIRE
- Journal :
- Catalysts
- Accession number :
- edsair.doi.dedup.....7dd44cbf14c40992b9b3f54d71750bbc
- Full Text :
- https://doi.org/10.3390/catal10060717