Comparison of Amorphous and Crystalline Ni-MOFs for Environmental Applications

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13440%2F25%3A43899210" target="_blank" >RIV/44555601:13440/25:43899210 - isvavai.cz</a>

Výsledek na webu

<a href="https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/open.202500373" target="_blank" >https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/open.202500373</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/open.202500373" target="_blank" >10.1002/open.202500373</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of Amorphous and Crystalline Ni-MOFs for Environmental Applications

Popis výsledku v původním jazyce

Amorphous and crystalline nickel-based metal-organic frameworks (Ni-MOFs) were prepared via a one-pot synthesis at room temperature in methanol using 2-methylimidazole as a ligand. The crystallinity was adjusted by varying the solvent volume, yielding an amorphous phase with higher surface area (?242?m2?g?1) and a crystalline form with reduced porosity (?22?m2?g?1). Comprehensive structural, morphological, and spectroscopic analyses confirmed distinct coordination environments, particle sizes and colloidal behaviors. Gas sorption measurements revealed enhanced CO2 uptake in the amorphous Ni-MOF (?9.5?cm3?g?1) compared to the crystalline sample (?3.4?cm3?g?1), consistent with its greater pore volume and surface area. Photocatalytic degradation of methyl orange under 365?nm UV irradiation demonstrated faster activity for the amorphous material, with a pseudo-first-order rate constant of 0.0157?min?1 versus 0.0035 min?1 for the crystalline sample. These findings suggest that structural features such as higher surface area, pore volume, and possible disorder contribute to the improved gas sorption and photocatalytic response. The use of mild reaction conditions and a single solvent system offers a straightforward and energy-efficient approach for preparing functional MOFs with tunable crystallinity, applicable in environmental remediation contexts.

Název v anglickém jazyce

Comparison of Amorphous and Crystalline Ni-MOFs for Environmental Applications

Popis výsledku anglicky

Amorphous and crystalline nickel-based metal-organic frameworks (Ni-MOFs) were prepared via a one-pot synthesis at room temperature in methanol using 2-methylimidazole as a ligand. The crystallinity was adjusted by varying the solvent volume, yielding an amorphous phase with higher surface area (?242?m2?g?1) and a crystalline form with reduced porosity (?22?m2?g?1). Comprehensive structural, morphological, and spectroscopic analyses confirmed distinct coordination environments, particle sizes and colloidal behaviors. Gas sorption measurements revealed enhanced CO2 uptake in the amorphous Ni-MOF (?9.5?cm3?g?1) compared to the crystalline sample (?3.4?cm3?g?1), consistent with its greater pore volume and surface area. Photocatalytic degradation of methyl orange under 365?nm UV irradiation demonstrated faster activity for the amorphous material, with a pseudo-first-order rate constant of 0.0157?min?1 versus 0.0035 min?1 for the crystalline sample. These findings suggest that structural features such as higher surface area, pore volume, and possible disorder contribute to the improved gas sorption and photocatalytic response. The use of mild reaction conditions and a single solvent system offers a straightforward and energy-efficient approach for preparing functional MOFs with tunable crystallinity, applicable in environmental remediation contexts.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

ChemistryOpen

ISSN

2191-1363

e-ISSN

—

Svazek periodika

14

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

10

Strana od-do

"nestrankovano"

Kód UT WoS článku

001553683600001

EID výsledku v databázi Scopus

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