Very low amount of TiO2 on N-doped carbon nanotubes significantly improves oxygen reduction activity and stability of supported Pt nanoparticles
Literature Information
Anqi Zhao, Justus Masa, Wei Xia
Electrochemical corrosion is a major problem for carbon materials used in electrocatalysis. Highly dispersed TiO2 was deposited on O-functionalized and N-doped carbon nanotubes by chemical vapour deposition to tackle the carbon corrosion problem. Very low Ti loadings of about 1 wt% were applied to minimize the negative influence of TiO2 as a semiconductor on the high conductivity of carbon materials. Both N doping and TiO2 coating facilitate strong metal–support interactions and favour the formation of small Pt particles. N doping improved the intrinsic catalytic activity of the carbon support and enhanced the conductivity due to the removal of surface oxygen groups, while the negative effect of TiO2 on conductivity is counterbalanced by its promoting effect on metal–support interactions leading to enhanced overall catalytic performance. Pt/TiO2/NCNTs showed the highest ORR activity, and significantly outperformed Pt/NCNTs in electrochemical stability tests.
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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.
![(1S)-1,5-Anhydro-2-O-alpha-L-arabinopyranosyl-1-[5-hydroxy-7-({6-O-[3-(4-hydroxy-3-methoxyphenyl)propanoyl]-beta-D-glucopyranosyl}oxy)-2-(4-hydroxyphenyl)-4-oxo-4H-chromen-6-yl]-D-glucitol structure (1S)-1,5-Anhydro-2-O-alpha-L-arabinopyranosyl-1-[5-hydroxy-7-({6-O-[3-(4-hydroxy-3-methoxyphenyl)propanoyl]-beta-D-glucopyranosyl}oxy)-2-(4-hydroxyphenyl)-4-oxo-4H-chromen-6-yl]-D-glucitol structure](https://static.chemtradehub.com/structs/225/2252345-81-4-bcff.webp)



