Limiting factors in the accuracy of DFT calculation for redox potentials DOI
Bun Chan

Journal of Computational Chemistry, Год журнала: 2024, Номер 45(14), С. 1177 - 1186

Опубликована: Фев. 4, 2024

Abstract In the present study, we have investigated factors affecting accuracy of computational chemistry calculation redox potentials, namely gas‐phase ionization energy (IE) and electron affinity (EA), continuum solvation effect. general, double‐hybrid density functional theory methods yield IEs EAs that are on average within ~0.1 eV our high‐level W3X‐L benchmark, with best performing method being DSD‐BLYP/ma‐def2‐QZVPP. For lower‐cost methods, errors ~0.2–0.3 eV, ω B97X‐3c most accurate (~0.15 eV). component, essentially all an error ~0.3 which shows limitation model. Curiously, directly calculated potentials show for methods. These notably smaller than what can be expected from propagation two components (IE EA, effect). Such a discrepancy attributed to cancellation errors, lowest‐cost GFN2‐xTB benefiting most, least. organometallic species, large deviations exceeding ~0.5 even DSD‐BLYP. The those EAs, represents major barrier such systems.

Язык: Английский

Breaking a Molecular Scaling Relationship Using an Iron–Iron Fused Porphyrin Electrocatalyst for Oxygen Reduction DOI
Daiki Nishiori, Jan Paul Menzel,

Nicholas R. Armada

и другие.

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(17), С. 11622 - 11633

Опубликована: Апрель 19, 2024

The design of efficient electrocatalysts is limited by scaling relationships governing trade-offs between thermodynamic and kinetic performance metrics. This ″

Язык: Английский

Процитировано

12

Automated quantum chemistry for estimating nucleophilicity and electrophilicity with applications to retrosynthesis and covalent inhibitors DOI Creative Commons
Nicolai Ree, Andreas H. Göller, Jan H. Jensen

и другие.

Digital Discovery, Год журнала: 2024, Номер 3(2), С. 347 - 354

Опубликована: Янв. 1, 2024

Reactivity scales such as nucleophilicity and electrophilicity are valuable tools for determining chemical reactivity selectivity.

Язык: Английский

Процитировано

10

Self-Cleaning and Charge Transport Properties of Foils Coated with Acrylic Paint Containing TiO2 Nanoparticles DOI Creative Commons
Sanja J. Armaković, Maria M. Savanović, Mirjana Šiljegović

и другие.

Inorganics, Год журнала: 2024, Номер 12(1), С. 35 - 35

Опубликована: Янв. 22, 2024

The study comprehensively investigates the design and performance of self-cleaning surfaces fabricated by coating aluminum foil with an acrylic paint matrix enriched different content titanium dioxide (TiO2) nanoparticles. main goal was to assess characteristics obtained. This employs scanning electron microscopy (SEM) analyze morphology TiO2-modified surfaces, revealing spherical particles. Raman spectroscopy elucidates signatures characterizing TiO2 incorporation within matrix, providing comprehensive insights into structural compositional changes for advanced surface engineering. Alternating current (AC) impedance used selected charge transport properties produced allowing us gain valuable material’s conductivity its potential impact on photocatalytic performance. these tiles were tested against three frequently textile dyes, which are considered pose a serious environmental threat. Subsequently, improving achieved plasma treatment, utilizing continuous arc. treatment led enhanced separation reactivity, crucial factors in mechanism. To deepen our comprehension reactive dye molecules their degradation dynamics, we employed combination density functional tight binding (DFTB) theory (DFT) calculations. investigation lays foundation advancing materials extensive applications, from architectural coatings remediation technologies.

Язык: Английский

Процитировано

10

Mechanically Flexible and Weavable Hybrid Aerogel Fibers with Ultrahigh Metal–Organic Framework Loadings for Versatile Applications DOI

Junhe Duan,

Qin Li,

Xu Weijia

и другие.

ACS Applied Polymer Materials, Год журнала: 2024, Номер 6(3), С. 1900 - 1910

Опубликована: Янв. 24, 2024

Flexible and weavable metal–organic framework (MOF)-based hybrid fibers can enable many potential applications, particularly for wearable functional devices. However, the fabrication of composite textiles with high MOF loadings, a large specific surface area, outstanding mechanical flexibility is still very challenging. Herein, we demonstrate preparation mechanically strong MOF@ANF (aramid nanofiber) aerogel gradient distribution crystals along radial direction through in situ growth MOFs on skeletons three-dimensional (3D)-printed aramid nanofiber (ANF) fibers. The deprotonation poly(p-phenylene terephthalamide) networks increases local concentration cobalt ions enables inside ANF filaments, mechanism which was revealed by computational simulations. As result, an ultrahigh ZIF-67 loading 63.4 wt % area 756.6 m2 g–1 were achieved ZIF-67@ANF fibers, highest among macroscopic MOF-based ever reported. These show excellent exhibit fast adsorption kinetics, capacity, recycling stability addressing various hazardous pollutants, including formaldehyde vapor, heavy metal ions, organic dyes. This work takes further step toward wearable-MOF-based textile development broad applications

Язык: Английский

Процитировано

10

Limiting factors in the accuracy of DFT calculation for redox potentials DOI
Bun Chan

Journal of Computational Chemistry, Год журнала: 2024, Номер 45(14), С. 1177 - 1186

Опубликована: Фев. 4, 2024

Abstract In the present study, we have investigated factors affecting accuracy of computational chemistry calculation redox potentials, namely gas‐phase ionization energy (IE) and electron affinity (EA), continuum solvation effect. general, double‐hybrid density functional theory methods yield IEs EAs that are on average within ~0.1 eV our high‐level W3X‐L benchmark, with best performing method being DSD‐BLYP/ma‐def2‐QZVPP. For lower‐cost methods, errors ~0.2–0.3 eV, ω B97X‐3c most accurate (~0.15 eV). component, essentially all an error ~0.3 which shows limitation model. Curiously, directly calculated potentials show for methods. These notably smaller than what can be expected from propagation two components (IE EA, effect). Such a discrepancy attributed to cancellation errors, lowest‐cost GFN2‐xTB benefiting most, least. organometallic species, large deviations exceeding ~0.5 even DSD‐BLYP. The those EAs, represents major barrier such systems.

Язык: Английский

Процитировано

10