Multi-Leg TiO(2)Nanotube Photoelectrodes Modified by Platinized Cyanographene with Enhanced Photoelectrochemical Performance

Shahrezaei M, Hejazi SMH, Rambabu Y, Vavrecka M, Bakandritsos A, Özkan S, Zboril R, Schmuki P, Naldoni A, Kment S (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Catalysts MDPI

Book Volume: 10

Journal Issue: 6

DOI: 10.3390/catal10060717

Abstract

Highly ordered multi-leg TiO(2)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 V(OC)decay (V-OCD), 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 V(OCD)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.

Authors with CRIS profile

Selda Özkan Lehrstuhl für Werkstoffwissenschaften (Korrosion und Oberflächentechnik) (LKO) Patrik Schmuki Lehrstuhl für Werkstoffwissenschaften (Korrosion und Oberflächentechnik) (LKO)

Involved external institutions

Palacky University Olomouc / Univerzita Palackého v Olomouci CZ Czech Republic (CZ)

How to cite

APA:

Shahrezaei, M., Hejazi, S.M.H., Rambabu, Y., Vavrecka, M., Bakandritsos, A., Özkan, S.,... Kment, S. (2020). Multi-Leg TiO(2)Nanotube Photoelectrodes Modified by Platinized Cyanographene with Enhanced Photoelectrochemical Performance. Catalysts, 10(6). https://doi.org/10.3390/catal10060717

MLA:

Shahrezaei, Mahdi, et al. "Multi-Leg TiO(2)Nanotube Photoelectrodes Modified by Platinized Cyanographene with Enhanced Photoelectrochemical Performance." Catalysts 10.6 (2020).

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