Fenton-like Cerium Metal–Organic Frameworks (Ce-MOFs) for Catalytic Oxidation of Olefins, Alcohol, and Dyes Degradation

Abstract

A metal–organic framework (MOF) of cerium (Ce) ions and 4,4′,4′′-nitrilotribenzoic acid linker was synthesized via a hydrothermal method. Ce-MOF consists of a Lewis acid moiety, i.e. Ce3+ and triphenylamine cores. It showed Fenton-like properties with excellent catalytic oxidation activity for olefins, primary/secondary alcohols, and water pollutants e.g., organic dyes. It displayed high oxidation conversion of cinnamyl alcohol and styrene of 100% and 53%, respectively. It offered good selectivity towards styrene oxide and benzaldehyde (i.e. 75% and 100%, respectively). It was applied for the oxidative degradation of dyes e.g. rhodamine B (RhB), methyl blue (MeB), Congo red (CR), and direct blue (DB) using hydrogen peroxide (H2O2) as an oxidant. It exhibited high efficiency in the oxidative degradation of these water pollutants. The mechanistic study of oxidation involves the formation of radical hydroxyl (•OH) species. This study revealed the possibility of enhancing the oxidative catalytic performance, including oxidative degradation of organic pollutants, by employing advanced oxidation processes (AOPs) using Ce-MOF. The catalyst is recyclable five times without significantly decreasing of the material’s catalytic performance.

Advanced Multifunctional Materials (2023)

“…A cerium MOF (Ce-MOF) exhibited Fenton-like properties that enabled catalytic oxidation of olefins, alcohol, and dyes degradation [199]. It offered 100% and 53% conversion of cinnamyl alcohol and styrene, respectively.…”

“…It provided high selectivity of 75% and 100% towards styrene oxide and benzaldehyde, respectively. It can catalytically degrade organic pollutants such as dyes [199]. Ce-MOF was also used probe for fluorescence detection of ferric ions and hydrogen peroxide [200], and MOFZyme for the inhibition of fungi [201,202].…”

Antifungal and Nanozyme Activities of Metal–Organic Framework‐derived CuO@C

“…Metal-organic frameworks (MOFs) are porous coordination polymers (PCP) or networks (PCN) with attractive properties, including high surface area and pore volume/ size. [16][17][18][19][20][21][22] They have been applied for several applications, including energy, [22][23][24][25][26] environmental, [27][28][29][30][31][32][33][34][35] biomedical applications, [36][37][38][39] and sensing/biosensing. [40][41][42] MOFs can be a precursor for the synthesis of nanoparticles with unique morphology and interesting physical and chemical properties.…”

Biodegradable Polymer Nanocomposites

“…The synthesis of polymer nanocomposites exhibits high electric and thermal conductivity with good dielectric properties. The properties of polymers can be improved via conjugation with inorganic and organic materials [4,5,24,[113][114][115][116][117][118][119][120][121][122]25,[123][124][125][126][127][128][129][130][131][132]26,[133][134][135][136][137][138][139][140][141][142]27,[143][144][145][146][147][148][149][150][28][29][30][31][32]…”