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Atomistic Modeling of Quaternized Chitosan Head Groups: Insights into Chemical Stability and Ion Transport for Anion Exchange Membrane Applications [PDF]

Molecules
The chemical stability and ion transport properties of quaternized chitosan (QCS)-based anion exchange membranes (AEMs) were explored using Density Functional Theory (DFT) calculations and all-atom molecular dynamics (MD) simulations. DFT calculations of
Mirat Karibayev, Bauyrzhan Myrzakhmetov, Dias Bekeshov, Yanwei Wang, Almagul Mentbayeva   +4 more
doaj   +2 more sources

On the Chemical Stability of DNA-Stabilized Silver Nanoclusters. [PDF]

ACS Omega
DNA-stabilized silver nanoclusters (DNA-AgNCs) are atomically precise emitters, whose chemical stability is commonly defined by their stable optical response over time. Here, two isotopically pure versions (107Ag and 109Ag) of DNA2-[Ag16Cl2]8+ were mixed, and we demonstrate for the first time for DNA-AgNCs that silver atoms are continuously exchanged ...
Romolini G, Cerretani C, Mollerup CB, Vosch T.   +3 more
europepmc   +6 more sources

Classical methods of Chemical stability: Comparison of analyses for gunpowders [PDF]

Scientific Technical Review, 2021
The main ingredient of gunpowder is nitrocellulose. For slowing down the catalytical decomposition process, predominated stabilizer diphenylamine is in use for single-base gunpowder, as well as for propellants. On the other hand, the stabilizer wears out
Rakić Magdalena, Krstović Mirjana, Dimić Mirjana, Fidanovski Bojana   +3 more
doaj   +1 more source

Factors affecting photocatalytic degradation of Reactive Green-19 with CdO-TiO2 nanocomposite [PDF]

Advances in Environmental Technology, 2021
Cdo-TiO2 nanocomposites were synthesized by varying the molar ratio of CdO: TiO2 as 1:1, 1:2, and 2:1 using the sol-gel method. The pH value for all the CdO-TiO2 nanocomposites was controlled at two different values, pH-3 and pH-13.
Gaurav Zope, Ajayagiri Goswami, Sunil Kulkarni, Pawan Meshram   +3 more
doaj   +1 more source

Remediation of Cd and Cu Contaminated Agricultural Soils near Oilfields by Biochar Combined with Sodium Humate-Wood Vinegar

Agronomy, 2023
Soil contaminations by heavy metals near oilfields have been widely reported and are causing great concern. Thus, it is highly desirable to develop cost-effective materials and methods to avoid heavy metal residues contaminating soil and food.
Junqi Wang, Weichun Gao, Junfeng Zhu, Yuxiao Yang, Yuhua Niu   +4 more
doaj   +1 more source

Sr Substituted La_2−xSr_xNi_0.8Co_0.2O_4+δ (0 ≤ x ≤ 0.8): Impact on Oxygen Stoichiometry and Electrochemical Properties

Energies, 2022
Lanthanide nickelate Ln2NiO4+δ (Ln = La, Pr, or Nd) based mixed ionic and electronic conducting (MIEC) materials have drawn significant attention as an alternative oxygen electrode for solid oxide cells (SOCs).
Ifeanyichukwu D. Unachukwu, Vaibhav Vibhu, Izaak C. Vinke, Rüdiger-A. Eichel, L. G. J. (Bert) de Haart   +4 more
doaj   +1 more source

Variation of soil organic matter depends on light-fraction organic matter under long-term monocropping of different crops

Plant, Soil and Environment, 2021
Cultivating crops influences soil organic matter (SOM), but the effect of different crops remains unclear, particularly under long-term monocropping.
Futao Zhang, Yunfa Qiao, Xiaozeng Han, Bin Zhang   +3 more
doaj   +1 more source

Optimisation of Polyphenols Extraction from Wild Bilberry Leaves—Antimicrobial Properties and Stability Studies

Molecules, 2023
Polyphenolic extracts from natural sources have received great interest due to their beneficial properties for human health. A method to reduce their variability is to use the design of experiments which allows a limited number of experiments to be ...
Ana-Maria Brezoiu, Mihaela Deaconu, Raul-Augustin Mitran, Ana-Maria Prelipcean, Cristian Matei, Daniela Berger   +5 more
doaj   +1 more source

Modeling glass-ceramic enamel properties [PDF]

Journal of the Serbian Chemical Society, 2002
The results of an investigation of the chemical and thermal characteristics of glass-ceramic enamels, derived from the Li2O-Na2O-Al2O3-TiO2-SiO2 system obtained by employing the methods of mathematical experiment planning, are presented in this paper ...
Gavrilovski Dragica S., Blagojević Nikola S., Gavrilovski Milorad P.   +2 more
doaj   +1 more source

Binding and Degradation Reaction of Hydroxide Ions with Several Quaternary Ammonium Head Groups of Anion Exchange Membranes Investigated by the DFT Method

Molecules, 2022
Commercialization of anion exchange membrane fuel cells (AEMFCs) has been limited due to the chemical degradation of various quaternary ammonium (QA) head groups, which affects the transportation of hydroxide (OH−) ions in AEMs. Understanding how various
Mirat Karibayev, Bauyrzhan Myrzakhmetov, Sandugash Kalybekkyzy, Yanwei Wang, Almagul Mentbayeva   +4 more
doaj   +1 more source