Reactive oxygen species accelerate degradation of anion exchange membranes based on polyphenylene oxide in alkaline environments

Literature Information

Publication Date 2016-06-22
DOI 10.1039/C6CP01978A
Impact Factor 3.676
Authors

Javier Parrondo, Zhongyang Wang, Min-Suk J. Jung, Vijay Ramani


View Original

Abstract

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

2020-03-18 Paper

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

2020-08-27 Paper

DOI: 10.1039/D0CP03472J

Theoretical model for predicting thermoelectric properties of tin chalcogenides

Naveen Kumar, Prabhjot Kaur, Chandan Bera

2020-07-27 Perspective

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

2020-08-13 Paper

DOI: 10.1039/D0CP03406A

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

2020-09-01 Paper

DOI: 10.1039/D0CP03123B

The physisorption mechanism of SO2 on graphitized carbon

Shiliang Johnathan Tan, D. D. Do

2020-08-28 Paper

DOI: 10.1039/D0CP03860A

Inside back cover

Cover

DOI: 10.1039/D0CP90208J

Enhanced ion diffusion induced by structural transition of Li-modified borophosphene

Shiping Wang, Cai Lu, Yanhuai Ding, Jiuren Yin, Ping Zhang, Yong Jiang

2020-08-28 Paper

DOI: 10.1039/D0CP03247F

You might also like

Compound Q&A

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...

898825-89-3N-Methoxy-N-methyl-1...
Compound Q&A

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...

1318338-47-4N-(4-Biphenylyl)dibe...
Compound Q&A

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...

1713-07-13-Acetamido-5-amino-...
Compound Q&A

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) ...

61820-03-9Benzyl 2-O-acetyl-3,...
Compound Q&A

What regulatory guidelines apply to 2-Ethylpiperazine dihydrochloride (CAS: 438050-52-3)?

2-Ethylpiperazine dihydrochloride (CAS: 438050-52-3) is regulated under the Glob...

438050-52-32-Ethylpiperazine di...
Compound Q&A

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...

119462-56-51,1'-[1,3-Phenyleneb...
Compound Q&A

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)...

1287217-79-15-Fluoro-2-(1-pyrrol...
Compound Q&A

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...

676371-00-96-Bromoimidazo[1,2-a...
Compound Q&A

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...

1049740-22-8(2S,4R)-4-(4-Nitrobe...

Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

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.

Recommended Compounds

Recommended Suppliers

Disclaimer
This page provides academic journal information for reference and research purposes only. We are not affiliated with any journal publishers and do not handle publication submissions. For publication-related inquiries, please contact the respective journal publishers directly.
If you notice any inaccuracies in the information displayed, please contact us at support@chemtradehub.com. We will promptly review and address your concerns.