Cerium-based UiO-66 metal–organic frameworks explored as efficient redox catalysts: titanium incorporation and generation of abundant oxygen vacancies

Abstract

For the first time, UiO-66(Ce) was endowed with greatly improved redox photocatalytic activity via Ti incorporation, based on the formation of oxygen vacancies.

Dehydrochlorination study of plasticized poly(vinyl chloride) contianing modified titanium dioxide, cerium stearate, organotin and β-diketone complex after long-term storage

“…Besides, cerium is a widely investigated rare earth metal due to its high tolerance, low cost and inherent Ce 4+ /Ce 3+ cycling [32]. Literature reports, cerium based UIO-66 metalorganic frameworks explored as effective redox catalysts, titanium incorporation and generation of ambient oxygen vacancies [33]. The stabilizing effect of Ce atom comes from: Soft and hard acid-base (cerium element belongs to hard acid and tends to form chemical bonds with strong base atoms.…”

Rare‐Earth‐Based Metal–Organic Frameworks as Multifunctional Platforms for Catalytic Conversion

“…beneficial for the generation of the reductive photoelectrons and oxidative *OH/*O 2 − (Figure 4e). [86] An et al fabricated a Ce 4+ doped UiO-67, based on dianion of biphenyl-4,4′-dicarboxylic acid as linker. [87] The further test of photocatalytic performance indicated that the doped Ce can improve the HER rate from 26.78 to 269.6 µmol g −1 h −1 .…”

“…e) Schematic of Ti incorporation into UiO-66(Ce) (top) and the corresponding enhancement in photocatalytic performance (bottom). Reproduced with permission [86]. Copyright 2019, Royal Society of Chemistry.…”

Strategies in Metal–Organic Framework‐based Catalysts for the Aerobic Oxidation of Alcohols and Recent Progress

“…19 Recently, Ce-based UiO-66 (UiO = University of Oslo)-type MOFs have been reported for to have unique stability and applications. 20 When Ce-based UiO-66(Ce) was employed with TEMPO as an oxidant, the aerobic oxidation of alcohols was accomplished (Scheme 6). Notably, this study investigated the MOF activation method.…”

“…While CAN reagent is working with stoichiometric manner, the catalytic oxidation with Ce(III) and Ce(IV) was successfully achieved in an MOF‐based catalyst 19 . Recently, Ce‐based UiO‐66 (UiO = University of Oslo)‐type MOFs have been reported for to have unique stability and applications 20 . When Ce‐based UiO‐66(Ce) was employed with TEMPO as an oxidant, the aerobic oxidation of alcohols was accomplished (Scheme 6).…”