Results 91 to 100 of about 25,986 (177)

Proximity Engineering of Fe‒N4 Twins for Oriented Generation of Singlet Oxygen for Hospital Wastewater Treatment

open access: yesAngewandte Chemie, Volume 138, Issue 12, 16 March 2026.
Precise modulation of Fe–N4 site distances constructs spin‐regulated Fe–N4 twins, triggering a volcano‐type Fenton‐like activity and promoting oriented singlet oxygen generation. The twin‐site catalyst enables highly selective and efficient hospital wastewater purification with simultaneous pharmaceutical degradation and disinfection under low ...
Xinhao Wang   +10 more
wiley   +2 more sources

Magnetic Properties of Ferritin at Different Levels of Degradation: Implications for MRI‐Based Iron Quantification in the Brain

open access: yesMagnetic Resonance in Medicine, Volume 95, Issue 5, Page 2892-2897, May 2026.
ABSTRACT Purpose Ferritin's iron core exhibits complex magnetic properties, as suggested by magnetometry and Mössbauer spectroscopy, which remain incompletely understood. In particular, the antiferromagnetic inner core could influence the accuracy of iron quantification using MRI and raise concerns about postmortem validation studies involving degraded
Stefan Ropele   +8 more
wiley   +1 more source

Self‐Regulating Sodium‐Ion Battery Materials: From Phase Reconstruction to Functional Activation

open access: yesAdvanced Materials, Volume 38, Issue 19, 1 April 2026.
Self‐regulating sodium‐ion batteries hinge on programmable phase behavior in layered oxides, interphases that renew without growth, and electrolytes that steer solvation and chemistry. This review distills mechanisms into design rules that span composition, site and entropy tuning, and self‐buffering anodes, linking operando evidence to choices and ...
Hong Gao   +10 more
wiley   +1 more source

Mössbauer and heat capacity studies of ErZnSn2

open access: yesNukleonika, 2017
Heat capacity results obtained for the intermetallic compound ErZnSn2 were re-analysed to also consider, apart from the classical Debye model, the anharmonicity of the crystal lattice and the proper set of Einstein modes.
Łątka Kazimierz   +4 more
doaj   +1 more source

A critical review of porous adsorbents for air separation: From fundamental insights to rational adsorbent design

open access: yesAIChE Journal, Volume 72, Issue 4, April 2026.
Abstract Air separation via selective adsorption using porous adsorbents offers energy‐efficient alternatives to cryogenic distillation for producing high‐purity O2 and N2. Adsorbent efficacy depends on balancing selectivity, durability, and performance consistency across varying conditions. This comprehensive review critically discusses the design and
Tianqi Wang   +9 more
wiley   +1 more source

Unraveling Oxygen Evolution Reaction Enhancement Mechanisms: From Internal to External Fields of Electrolyzers

open access: yesChemElectroChem, Volume 13, Issue 7, 1 April 2026.
This review systematically examines strategies for enhancing alkaline water electrolysis through internal catalyst engineering and external field assistance (light, magnetic fields). It proposes an integrated internal‐external field framework, elucidating synergistic mechanisms at electronic, mass transport, and system stability levels.
Qiwei Zhang   +5 more
wiley   +1 more source

Breaking the ORR Trade‐Off via Mg‐Steered Fe‐N4 Pyridinic Conversion

open access: yesSmall, Volume 22, Issue 19, 1 April 2026.
A Mg‐assisted sacrificial templating strategy is developed to selectively regulate the coordination environment of Fe–N4 sites. This approach induces an active site conversion from S1 to S2, enabling enhancement of oxygen reduction activity and durability. ABSTRACT Single‐atom Fe sites coordinated by pyrrolic nitrogen (Fe‐Npyrr‐C) are highly active for
Si‐Qi Sun   +10 more
wiley   +1 more source

Synthesis, Structure, and Eu3+‐Activated Photoluminescence of the Mixed‐Anion Carbodiimide NaLa2F3(CN2)2

open access: yesZeitschrift für anorganische und allgemeine Chemie, Volume 652, Issue 4, 17 March 2026.
NaLa2F3(CN2)2 forms via solid‐state metathesis of LaF3 and Na2(CN2) at 550°C and remains stable under ambient air and humidity. The structure is based on [La(NCN)5F4] polyhedra with interstitial Na+; revealing an unconventional red emission when doped with Eu3+.
Albert T. Schwarz   +4 more
wiley   +1 more source

Redox‐Mediated Electrochemical Regeneration of Spent LiFePO4 Battery Cathodes

open access: yesAngewandte Chemie, Volume 138, Issue 12, 16 March 2026.
This work demonstrates a redox‐mediated electrochemical method for direct recycling of spent LiFePO4 battery cathodes. A water‐soluble mediator, iron propylenediamine tetraacetate (Fe‐PDTA), transports electrons into an off‐electrode reservoir where it drives compositional and structural repair of degraded LiFePO4.
Deok‐Ho Roh   +5 more
wiley   +1 more source

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