Articles with "chemical degradation" as a keyword



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Nanoscale Chemical Degradation Mechanisms of Sulfate Attack in Alkali-activated Slag

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Published in 2018 at "Journal of Physical Chemistry C"

DOI: 10.1021/acs.jpcc.7b11270

Abstract: Chemically induced material degradation is a major durability issue facing many technologically important materials systems, including conventional and new sustainable cementitious materials. In this study, the nanoscale chemical degradation mechanisms have been elucidated for an… read more here.

Keywords: degradation; nanoscale chemical; activated slag; chemistry ... See more keywords
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Bioinspired Antiaging Binder Additive Addressing the Challenge of Chemical Degradation of Electrolyte at Cathode/Electrolyte Interphase.

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Published in 2021 at "Journal of the American Chemical Society"

DOI: 10.1021/jacs.1c06003

Abstract: For layered transition metal oxides cathode-based lithium batteries, the chemical degradation of electrolytes leads to fast battery capacity decay, severely challenging their practical applications. This kind of chemical degradation of electrolytes is caused by the… read more here.

Keywords: binder additive; oxygen; cathode; chemical degradation ... See more keywords
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Role of water environment in chemical degradation of a covalent organic framework tethered with quaternary ammonium for anion exchange membranes

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Published in 2022 at "RSC Advances"

DOI: 10.1039/d2ra03449b

Abstract: The anion exchange membrane (AEM) is a main component for AEM fuel cells. Recently, a series of electrolytes based on covalent organic frameworks (COFs) functionalized with quaternary ammonium (QA) of showed extraordinary ionic conductivities thanks… read more here.

Keywords: water; anion exchange; chemical degradation; chemical ... See more keywords
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Silica gel-mediated chemical degradation of dimeric pyranonaphthoquinones into their monomeric units

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Published in 2023 at "New Journal of Chemistry"

DOI: 10.1039/d3nj01957h

Abstract: We present herein the chemical degradation of dimethyl uroleuconaphins A2 and B2 mediated by silica gel. The reaction promoted carbon–carbon bond cleavage of the dimeric structure, resulting in the monomeric... read more here.

Keywords: degradation dimeric; mediated chemical; chemical degradation; gel mediated ... See more keywords
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Violet phosphorus surface chemical degradation in comparison to black phosphorus

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Published in 2021 at "Applied Physics Letters"

DOI: 10.1063/5.0045090

Abstract: Bulk growth methods have made it possible to synthesize several allotropes of phosphorus such as black, white, red, and violet phosphorus. However, unlike exfoliated black phosphorus (BP), which has been extensively studied, much of the… read more here.

Keywords: violet phosphorus; chemical degradation; black phosphorus; phosphorus ... See more keywords
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Olive Oils from Fruits Infected with Different Anthracnose Pathogens Show Sensory Defects Earlier Than Chemical Degradation

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Published in 2021 at "Agronomy"

DOI: 10.3390/agronomy11061041

Abstract: Anthracnose is the most important disease of olives responsible for olive oil depreciation. The aim of this study is to compare the negative effects of the most common olive anthracnose pathogens in Portugal, Colletotrichum nymphaeae,… read more here.

Keywords: oils fruits; earlier chemical; anthracnose pathogens; fruits infected ... See more keywords
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Influencing Factors of Sulfuric Acid Resistance of Ca-Rich Alkali-Activated Materials

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Published in 2023 at "Materials"

DOI: 10.3390/ma16062473

Abstract: In this paper, we distinguished the degradation of alkali-activated material (AAM) exposed to sulfuric acid as physical (scaling, spalling, cracking, breaking, etc.) and chemical degradation (neutralization), because the mechanisms of these two types of degradation… read more here.

Keywords: alkali activated; ratio; chemical degradation; acid resistance ... See more keywords
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The Effect of Chemical Degradation and Polishing on the Gloss of Composite Dental Materials

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Published in 2023 at "Materials"

DOI: 10.3390/ma16103727

Abstract: This aim of this study was to investigate surface gloss changes of different composite dental materials after chemical degradation or polishing. Five different composites were used (Evetric, GrandioSO, Admira Fusion, Filtek Z550, Dynamic Plus). The… read more here.

Keywords: dental materials; gloss; degradation polishing; chemical degradation ... See more keywords
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Thiyl Radical Reactions in the Chemical Degradation of Pharmaceutical Proteins

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Published in 2019 at "Molecules"

DOI: 10.3390/molecules24234357

Abstract: Free radical pathways play a major role in the degradation of protein pharmaceuticals. Inspired by biochemical reactions carried out by thiyl radicals in various enzymatic processes, this review focuses on the role of thiyl radicals… read more here.

Keywords: degradation; radical reactions; degradation pharmaceutical; thiyl radical ... See more keywords
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A Comprehensive Review on Adsorption, Photocatalytic and Chemical Degradation of Dyes and Nitro-Compounds over Different Kinds of Porous and Composite Materials

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Published in 2023 at "Molecules"

DOI: 10.3390/molecules28031081

Abstract: Dye and nitro-compound pollution has become a significant issue worldwide. The adsorption and degradation of dyes and nitro-compounds have recently become important areas of study. Different methods, such as precipitation, flocculation, ultra-filtration, ion exchange, coagulation,… read more here.

Keywords: adsorption; nitro compounds; dyes nitro; chemical degradation ... See more keywords
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Chemical Degradation of e-PTFE Support Used in PEMFC after Fenton Reaction

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Published in 2020 at "Korean Journal of Chemical Engineering"

DOI: 10.9713/kcer.2020.58.4.536

Abstract: 고분자연료전지(PEMFC) 고분자막의 지지체는 기계적 내구성 향상에 핵심적인 역할을 한다. 지지체로 사용하는 e-PTFE는 화학적으로 안정하여 PEMFC 구동과정에서 전기화학적인 열화에 대해서는 거의 연구되지 않았다. 본 연구에서는 e-PTFE가 Fenton 반응과정에서 발생한 라디칼과 과산화수소에 화학적으로 안정한지 검토하였다. Fenton 반응… read more here.

Keywords: degradation ptfe; pemfc ptfe; chemical; chemical degradation ... See more keywords