The role of surface oxygenated-species and adsorbed hydrogen in the oxygen reduction reaction (ORR) mechanism and product selectivity on Pd-based catalysts in acid media
Literature Information
R. Rahul, R. K. Singh, B. Bera, R. Devivaraprasad, M. Neergat
Oxygen reduction reaction (ORR) is investigated on bulk PdO-based catalysts (oxides of Pd and Pd3Co) in oxygen-saturated 0.1 M HClO4 to establish the role of surface oxides and adsorbed hydrogen in the activity and product selectivity (H2O/H2O2). The initial voltammetric features suggest that the oxides are inactive toward ORR. The evolution of the ORR voltammograms and potential-dependent H2O2 generation features on the PdO catalyst suggest gradual and parallel in situ reduction of the bulk PdO phase below ∼0.4 V in the hydrogen underpotential deposition (Hupd) region; the reduction of the bulk PdO catalyst is confirmed from the X-ray photoelectron spectra (XPS) and X-ray diffraction (XRD) patterns. The potential-dependent H2O2 generation features originate due to the presence of surface oxides and adsorbed hydrogen; this is further confirmed using halide ions (Cl− and Br−) and peroxide as the external impurities.
Related Literature
Thermodiffusion of repulsive charged nanoparticles – the interplay between single-particle and thermoelectric contributions
M. Kouyaté, G. Demouchy, G. Mériguet, R. Aquino, E. Dubois, S. Nakamae, M. Roger, J. Depeyrot, R. Perzynski
DOI: 10.1039/C8CP02558D
Open-cell voltage and electrical conductivity of a protonic ceramic electrolyte under two chemical potential gradients
Ho-Il Ji, Hyoungchul Kim, Hae-Weon Lee, Byung-Kook Kim, Kyung Joong Yoon
DOI: 10.1039/C8CP01880D
Magnetic properties of nanoparticles as a function of their spatial distribution on liposomes and cells
Maria Eugenia Fortes Brollo, Patricia Hernández Flores, Lucía Gutiérrez, Christer Johansson, Domingo Francisco Barber, María del Puerto Morales
DOI: 10.1039/C8CP03016B
The double exciton state of conjugated chromophores with strong diradical character: insights from TDDFT calculations
Juan Casado
DOI: 10.1039/C8CP04008G
Machine learning for predicting product distributions in catalytic regioselective reactions
Sayan Banerjee, A. Sreenithya, Raghavan B. Sunoj
DOI: 10.1039/C8CP03141J
Theoretical study on the optical and electronic properties of graphene quantum dots doped with heteroatoms
Jianguang Feng, Hongzhou Dong, Beili Pang, Feifei Shao, ChunKai Zhang, Liyan Yu
DOI: 10.1039/C8CP01403E
Pure spin current and phonon thermoelectric transport in a triangulene-based molecular junction
Jianwei Li, Yihang Nie, Fuming Xu, Yunjin Yu, Bin Wang
DOI: 10.1039/C8CP02322K
Electron correlation effects of the ThO and ThS molecules in the spinor basis. A relativistic coupled cluster study of ground and excited states properties
Paweł Tecmer, Cristina E. González-Espinoza
DOI: 10.1039/C8CP00048D
You might also like
How should 2-Methylbenzene-1,4-diamine dihydrochloride (CAS: 615-45-2) be stored?
2-Methylbenzene-1,4-diamine dihydrochloride (CAS: 615-45-2) should be stored in ...
Is (1S,4S)-2,5-Diazabicyclo[2.2.1]heptane dihydrobromide (CAS: 132747-20-7) safe?
(1S,4S)-2,5-Diazabicyclo[2.2.1]heptane dihydrobromide is generally considered sa...
What industries use (6-Chloropyridazin-3-YL)methanamine (CAS: 871826-15-2)?
(6-Chloropyridazin-3-YL)methanamine finds applications in the pharmaceutical ind...
What are the main uses of 2-Fluoro-3-methylphenol (CAS: 77772-72-6)?
2-Fluoro-3-methylphenol is primarily used in the synthesis of pharmaceuticals, p...
What precautions should be taken when handling 3-Methoxy-4-nitrobenzonitrile (CAS: 177476-75-4)?
When handling 3-Methoxy-4-nitrobenzonitrile, it is important to wear appropriate...
What precautions should be taken when handling 1,3-Oxazolo[4,5-b]pyridine-2(3H)-thione (CAS: 211949-57-4)?
When handling 1,3-Oxazolo[4,5-b]pyridine-2(3H)-thione (CAS: 211949-57-4), it is ...
What regulatory guidelines apply to 4-Ethynylbenzamide (CAS: 90347-86-7)?
4-Ethynylbenzamide (CAS: 90347-86-7) falls under various regulatory guidelines i...
What are the main uses of 3-(2-Ethylphenyl)-2-thioxo-4-imidazolidinone (CAS: 186822-57-1)?
3-(2-Ethylphenyl)-2-thioxo-4-imidazolidinone is primarily used as an intermediat...
What is (2-Fluoro-6-methoxyphenyl)acetic acid (CAS: 500912-19-6)?
(2-Fluoro-6-methoxyphenyl)acetic acid, also known as 4-fluoro-3-methoxybenzoic a...
What is the market or research trend for 2-[4-(Hydroxymethyl)phenoxy]ethanol (CAS: 102196-18-9)?
Market trends for 2-[4-(Hydroxymethyl)phenoxy]ethanol (CAS: 102196-18-9) indicat...
Source Journal
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.














![(1R,6R)-6-({[(2-Methyl-2-propanyl)oxy]carbonyl}amino)-3-cyclohexene-1-carboxylic acid structure (1R,6R)-6-({[(2-Methyl-2-propanyl)oxy]carbonyl}amino)-3-cyclohexene-1-carboxylic acid structure](https://static.chemtradehub.com/structs/865/865689-24-3-5fef.webp)