Reactive oxygen species accelerate degradation of anion exchange membranes based on polyphenylene oxide in alkaline environments
Literature Information
Javier Parrondo, Zhongyang Wang, Min-Suk J. Jung, Vijay Ramani
Anion exchange membranes (AEM) based on polyphenylene oxide (PPO) suffered quaternary-ammonium-cation-site degradation in alkaline environments. Surprisingly, the degradation rate was considerably faster in the presence of molecular oxygen. We postulated that the AEM cation-site catalyzes the reduction of dioxygen by hydroxide ions to yield the superoxide anion radical and the highly reactive hydroxyl free radical. We substantiated our hypothesis by using a phosphorous-containing spin trap (5-diisopropoxy-phosphoryl-5-methyl-1-pyrroline-N-oxide) to detect the adducts for both free radicals in situ using 31P-NMR spectroscopy.
Related Literature
Exploring the origins of crystallisation kinetics in hierarchical materials using in situ X-ray diffraction and pair distribution function analysis
Matthew E. Potter, Mark E. Light, Daniel J. M. Irving, Alice E. Oakley, Stephanie Chapman, Philip Chater, Geoff Cutts, Andrew Watts, Michael Wharmby, Bart D. Vandegehuchte, Moritz W. Schreiber, Robert Raja
DOI: 10.1039/D0CP00670J
Probing the binding modes and dynamics of histidine on fumed silica surfaces by solid-state NMR
Haley L. Swanson, Chengchen Guo, Michael Cao, J. Bennett Addison, Gregory P. Holland
DOI: 10.1039/D0CP03472J
Theoretical model for predicting thermoelectric properties of tin chalcogenides
Naveen Kumar, Prabhjot Kaur, Chandan Bera
DOI: 10.1039/D0CP03117H
Charge transfer and strain tuned antiferromagnetism in the two-dimensional CrCl3/[Mo2C(–O)]2 heterojunction
Mingyu Zhao, Xianqi Dai, Yanan Tang
DOI: 10.1039/D0CP03406A
Development of photochemical and electrochemical cells for operando X-ray absorption spectroscopy during photocatalytic and electrocatalytic reactions
Rachit Khare, Andreas Jentys
DOI: 10.1039/D0CP00654H
Boron-based ternary Rb6Be2B6 cluster featuring unique sandwich geometry and a naked hexagonal boron ring
Lin-Yan Feng, Li Xu, Xiang-Ru Hou, Nan Li, Chang-Qing Miao, Hua-Jin Zhai
DOI: 10.1039/D0CP03123B
The physisorption mechanism of SO2 on graphitized carbon
Shiliang Johnathan Tan, D. D. Do
DOI: 10.1039/D0CP03860A
Magnetism, half-metallicity, and topological signatures in Fe2−xVxPO5 (x = 0, 0.5, 1, 1.5, 2) materials: a potential class of advanced spintronic materials
Lei Jin, Weizhen Meng, Xunan Shen, Liying Wang, Xuefang Dai
DOI: 10.1039/D0CP02981E
Enhanced ion diffusion induced by structural transition of Li-modified borophosphene
Shiping Wang, Cai Lu, Yanhuai Ding, Jiuren Yin, Ping Zhang, Yong Jiang
DOI: 10.1039/D0CP03247F
You might also like
How should waste containing N-Methoxy-N-methyl-1,3-thiazole-5-carboxamide (CAS: 898825-89-3) be handled?
Waste containing N-Methoxy-N-methyl-1,3-thiazole-5-carboxamide (CAS: 898825-89-3...
How should N-(4-Biphenylyl)dibenzo[b,d]furan-4-amine (CAS: 1318338-47-4) be stored?
N-(4-Biphenylyl)dibenzo[b,d]furan-4-amine should be stored in a tightly sealed c...
What is the market or research trend for 3-Acetamido-5-amino-2,4,6-triiodobenzoic acid (CAS: 1713-07-1)?
The market for 3-Acetamido-5-amino-2,4,6-triiodobenzoic acid (CAS: 1713-07-1) is...
How should Benzyl 2-O-acetyl-3,4,6-tri-O-benzyl-beta-D-galactopyranoside (CAS: 61820-03-9) be stored?
Benzyl 2-O-acetyl-3,4,6-tri-O-benzyl-beta-D-galactopyranoside (CAS: 61820-03-9) ...
What regulatory guidelines apply to 2-Ethylpiperazine dihydrochloride (CAS: 438050-52-3)?
2-Ethylpiperazine dihydrochloride (CAS: 438050-52-3) is regulated under the Glob...
What regulatory guidelines apply to 1,1'-[1,3-Phenylenebis(methylene)]bis(3-methyl-1H-pyrrole-2,5-dione) (CAS: 119462-56-5)?
1,1'-[1,3-Phenylenebis(methylene)]bis(3-methyl-1H-pyrrole-2,5-dione) (CAS: 11946...
Are there alternatives to 5-Fluoro-2-(1-pyrrolidinyl)pyridine (CAS: 1287217-79-1) in synthesis?
Several alternatives can be used in the synthesis of 5-Fluoro-2-(1-pyrrolidinyl)...
What precautions should be taken when handling 1-((2R,3R,4R,5R)-5-((bis(4-methoxyphenyl)(phenyl)methoxy)methyl)-4-hydroxy-3-methoxytetrahydrofuran-2-yl)-5-methylpyrimidine-2,4(1H,3H)-dione (CAS: 153631-19-7)?
Proper personal protective equipment (PPE) must be worn when handling this compo...
What precautions should be taken when handling 6-Bromoimidazo[1,2-a]pyridin-8-amine (CAS: 676371-00-9)?
When handling 6-Bromoimidazo[1,2-a]pyridin-8-amine, it is important to wear appr...
Are there alternatives to (2S,4R)-4-(4-Nitrobenzyl)pyrrolidine-2-carboxylic acid hydrochloride (CAS: 1049740-22-8) in synthesis?
Alternatives to (2S,4R)-4-(4-Nitrobenzyl)pyrrolidine-2-carboxylic acid hydrochlo...
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.











![4-Chloro-2-{[(2-chlorophenoxy)acetyl]amino}benzoic acid structure 4-Chloro-2-{[(2-chlorophenoxy)acetyl]amino}benzoic acid structure](https://static.chemtradehub.com/structs/351/351424-20-9-9467.webp)


