Zirconium-based metal-organic frameworks: the relation between linker connectivity, structure stability, and catalytic activity towards organophosphates

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F24%3A00587753" target="_blank" >RIV/61388980:_____/24:00587753 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/44555601:13520/24:43898490

Výsledek na webu

<a href="https://hdl.handle.net/11104/0355312" target="_blank" >https://hdl.handle.net/11104/0355312</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d4qi01366b" target="_blank" >10.1039/d4qi01366b</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Zirconium-based metal-organic frameworks: the relation between linker connectivity, structure stability, and catalytic activity towards organophosphates

Popis výsledku v původním jazyce

Metal-organic frameworks (MOFs) are studied for many applications, however, there are only a few examples of commercialization. One of the reasons behind this is that the stability of MOFs is still unknown. Much attention has been devoted to the rational synthesis of novel MOFs, yet the predictability of MOF stability is so far limited. The present study compares the stability in a water environment with pH ranging from 3.0 to 11.0 of four zirconium-based MOFs constructed from ditopic, tritopic, and tetratopic linkers, namely UiO-66 (benzene-1,4-dicarboxylic acid), MOF-808 (benzene-1,3,5-tricarboxylic acid), MIP-200 (5,5 '-methylenediisophthalic acid), and PCN-222 (5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin). Finally, to delineate the nature of the defects induced by the linker release, we tested the MOFs treated at a certain pH for the degradation of model organic pollutant methyl paraoxon. It is clear that both MOFs based on tetratopic linkers are much more stable than UiO-66 and MOF-808 composed of di- and tritopic linkers, respectively. It should be noted that the kinetics of the linker release were also significantly slower for tetratopic linkers. At the same time, the connectivity of the Zr6 cluster did not play such an important role. MIP-200 proved to be the most stable MOF from the series in an aqueous environment, however, the loss of a small amount of monocarboxylic acid from the structure allowed thermal recrystallization of MIP-200 to an unknown phase so far.

Název v anglickém jazyce

Zirconium-based metal-organic frameworks: the relation between linker connectivity, structure stability, and catalytic activity towards organophosphates

Popis výsledku anglicky

Metal-organic frameworks (MOFs) are studied for many applications, however, there are only a few examples of commercialization. One of the reasons behind this is that the stability of MOFs is still unknown. Much attention has been devoted to the rational synthesis of novel MOFs, yet the predictability of MOF stability is so far limited. The present study compares the stability in a water environment with pH ranging from 3.0 to 11.0 of four zirconium-based MOFs constructed from ditopic, tritopic, and tetratopic linkers, namely UiO-66 (benzene-1,4-dicarboxylic acid), MOF-808 (benzene-1,3,5-tricarboxylic acid), MIP-200 (5,5 '-methylenediisophthalic acid), and PCN-222 (5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin). Finally, to delineate the nature of the defects induced by the linker release, we tested the MOFs treated at a certain pH for the degradation of model organic pollutant methyl paraoxon. It is clear that both MOFs based on tetratopic linkers are much more stable than UiO-66 and MOF-808 composed of di- and tritopic linkers, respectively. It should be noted that the kinetics of the linker release were also significantly slower for tetratopic linkers. At the same time, the connectivity of the Zr6 cluster did not play such an important role. MIP-200 proved to be the most stable MOF from the series in an aqueous environment, however, the loss of a small amount of monocarboxylic acid from the structure allowed thermal recrystallization of MIP-200 to an unknown phase so far.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

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

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Inorganic Chemistry Frontiers

ISSN

2052-1553

e-ISSN

2052-1553

Svazek periodika

11

Číslo periodika v rámci svazku

16

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

17

Strana od-do

5319-5335

Kód UT WoS článku

001265353600001

EID výsledku v databázi Scopus

2-s2.0-85198635006