Speaker
Description
Titania (TiO2) nanoparticles were synthesized by the co-precipitation method. The influence of different phases of TiO2 electrocatalysts was investigated on the electrochemical hydrogen evolution reaction. The XRPD results confirmed the formation of anatase, anatase-rutile, rutile-anatase, and rutile phases at calcination temperatures of 25, 350, 450, and 550 ℃. The average crystallite size varied from 6 to 20 nm with an increase in calcination temperature. The FE-SEM images revealed the irregularly shaped particles' morphology. The pristine TiO2 electrocatalysts achieved a current density of 10 mA cm−2 at the expense of an overpotential of 400 mV, 353 mV, 448 mV, and 690 mV for anatase, TiO2 at 350 ℃, TiO2 at 450 ℃, and TiO2 at 550 ℃, respectively. Cyclic Voltammetry revealed irreversible reactions of pristine TiO2 electrocatalysts. Electrochemical Impedance Spectroscopy (EIS) analysis showed a good charge transfer resistance value, indicating a good electron exchange attribute. Chronoamperometric analyses showed long-term stability of the TiO2 electrocatalyst. The findings suggest the potential of TiO2 nanoparticles to be utilized as an electrocatalyst in HER for hydrogen production.
| Apply for student award at which level: | PhD |
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| Consent on use of personal information: Abstract Submission | Yes, I ACCEPT |