Ruthenium containing molecular electrocatalyst on glassy carbon for electrochemical water splitting.
Lin LiBiswanath DasAhibur RahamanAndrey ShatskiyFei YePeihong ChengChunze YuanZhiqi YangOscar VerhoMarkus D KärkäsJoydeep DuttaTsu-Chien WengBjörn ÅkermarkPublished in: Dalton transactions (Cambridge, England : 2003) (2022)
Electrochemical water splitting constitutes one of the most promising strategies for converting water into hydrogen-based fuels, and this technology is predicted to play a key role in the transition towards a carbon-neutral energy economy. To enable the design of cost-effective electrolysis cells based on this technology, new and more efficient anodes with augmented water splitting activity and stability will be required. Herein, we report an active molecular Ru-based catalyst for electrochemically-driven water oxidation (overpotential of ∼395 mV at pH 7 phosphate buffer) and two simple methods for preparing anodes by attaching this catalyst onto glassy carbon through multi-walled carbon nanotubes to improve stability as well as reactivity. The anodes modified with the molecular catalyst were characterized by a broad toolbox of microscopy and spectroscopy techniques, and interestingly no RuO 2 formation was detected during electrocatalysis over 4 h. These results demonstrate that the herein presented strategy can be used to prepare anodes that rival the performance of state-of-the-art metal oxide anodes.
Keyphrases
- ion batteries
- ionic liquid
- walled carbon nanotubes
- single molecule
- room temperature
- visible light
- reduced graphene oxide
- gold nanoparticles
- metal organic framework
- highly efficient
- high resolution
- carbon dioxide
- induced apoptosis
- label free
- oxidative stress
- high throughput
- cell cycle arrest
- hydrogen peroxide
- cell death
- high speed
- signaling pathway
- mass spectrometry
- virtual reality
- simultaneous determination