Ternary supramolecular system for photocatalytic oxidation with air by consecutive photo-induced electron transfer processes

He, Jiachen; Han, Qiuxia; Li, Jie; Shi, Zhuolin; Shi, Xiaoyun; Niu, Jingyang

doi:10.1016/j.jcat.2019.06.040

Cited by 68 publications

(47 citation statements)

References 60 publications

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“…However, it is important to note here that in the previously presented studies, a sacrificial donor or acceptor was required for the photocatalytic process. In a very recent work by Niu and co-workers, the assembling of a photosensitizer, electron donor, and acceptor into one single framework was reported [149]. For the synthesis of this Zn-based framework, the photosensitizer N,N -di(4-pyridyl)-1,4,5,8-naphthalenetetracarboxydiimide (DPNDI) was used as the organic ligand, while pyrrolidine-2-yl-imidazole and the [BW 12 O 40 ] 5− anion were introduced, respectively, as an electron donor and electron acceptor (see Figure 16).…”

Section: Photocatalysismentioning

confidence: 99%

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POM@MOF Hybrids: Synthesis and Applications

et al. 2020

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The hybrid materials that are created by supporting or incorporating polyoxometalates (POMs) into/onto metal–organic frameworks (MOFs) have a unique set of properties. They combine the strong acidity, oxygen-rich surface, and redox capability of POMs, while overcoming their drawbacks, such as difficult handling, a low surface area, and a high solubility. MOFs are ideal hosts because of their high surface area, long-range ordered structure, and high tunability in terms of the pore size and channels. In some cases, MOFs add an extra dimension to the functionality of hybrids. This review summarizes the recent developments in the field of POM@MOF hybrids. The most common applied synthesis strategies are discussed, together with major applications, such as their use in catalysis (organocatalysis, electrocatalysis, and photocatalysis). The more than 100 papers on this topic have been systematically summarized in a handy table, which covers almost all of the work conducted in this field up to now.

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Section: Photocatalysismentioning

confidence: 99%

“…Zn-DPNDI-PYI as photocatalyst for the coupling of primary amines and oxidation of olefins with air under visible light. Reprinted from [149]. Copyright (2019), with permission from Elsevier.…”

Section: Photocatalysismentioning

confidence: 99%

POM@MOF Hybrids: Synthesis and Applications

et al. 2020

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“…Recently, additional functional properties of POMs have also been reported for different applications such as magnetism, 20 ionic conductivity, 21 photo or electrochromism 22 . More recently, POMs based materials have been used in solar cells and photovoltaic devices, 23 proton conductivity, 24,25 aqueous batteries 26 and photocatalytic oxidation using supramolecular systems 27 …”

Section: Introductionmentioning

confidence: 99%

“…22 More recently, POMs based materials have been used in solar cells and photovoltaic devices, 23 proton conductivity, 24,25 aqueous batteries 26 and photocatalytic oxidation using supramolecular systems. 27 However, the difficulty in exploiting POMs as functional materials in practical applications stems from their high solubility in aqueous solutions or organic solvents because of their strong Bronsted acid property, that is, H 3 W 12 O 40 (pKa 1 = 1.5; pKa 2 = 3) and H 3 PMo 12 O 40 (pKa = 1.5), 28 which prevents their easy recovery and reuse. To overcome these problems, researchers have reported different methods for more effective and cheaper photocatalytic applications, such as POMs impregnation on semiconductors, 29,30 combination with counter ions to give insoluble salts, 31 entrapping onto active carbon 32 and nanocomposites development.…”

Section: Introductionmentioning

confidence: 99%

Characterization of polyoxometalate/polymer photo‐composites: A toolbox for the photodegradation of organic pollutants

Ghali

Brahmi

Benltifa

et al. 2020

Journal of Polymer Science

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Different inorganic/organic photocomposites based on polyoxometalate (POM) nanoparticles have been developed for photocatalytic applications. Currently, polyoxometalate nanoparticles have been successfully in‐situ embedded into an acrylate polymer network by photopolymerization upon mild visible light irradiation at 405 nm. The proposed POM/polymer photocomposites have been characterized using complementary techniques for a better understanding of their photocatalytic activity. Interestingly, the obtained photocomposites exhibit high rigidity, excellent thermal stability, a non‐negligible porosity and new functionalities such as light reactivity and redox properties. Moreover, developed composites showed efficient catalytic activity for the color removal of aqueous solutions of erythrosine and rose Bengal under Light Emitting Diodes LED@375 nm irradiation reaching 80 and 90% as a final color removal, respectively.

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“…The [Mo 4 O 13 ] 2– unit incorporated into MOFs will contribute to the realization of its stable existence and heterogeneity . More importantly, directional arrangement of photosensitizers or co-catalysts in a confined space facilitates electron–hole separation and creates a short migration path for charge carriers to ensure electron transfer and proton migration. − …”

Section: Introductionmentioning

confidence: 99%

An Isopolymolybdate-Incorporated Metal–Organic Framework with Sulfite Oxidase-Mimicking Activity for Photocatalytic Oxidation of Sulfides Utilizing In Situ-Generated Singlet Oxygen

et al. 2021

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Developing new photocatalysts for sulfide oxidation utilizing in situ-generated 1 O 2 is very significant. Inspired by natural enzymatic processes, we synthesized a mimic sulfite oxidase (SO), {[Co(Mo 4 O 13 )(TPT) 2 ]} (CoMo-TPT), by incorporating an isopolymolybdate anion [Mo 4 O 13 ] 2− into a 2,4,6tri(4-pyridyl)-1,3,5-triazine (TPT)-based metal−organic framework under mild hydrothermal conditions. In this structure, {Mo 4 O 13 } units with intrinsic SO-like catalytic sites are beneficial for the selective oxidation of sulfite and thioether. The ultraviolet−visible spectra of CoMo-TPT exhibited strong absorption from 250 to 650 nm and potential application in the utilization of solar energy. Mott− Schottky measurements indicated that CoMo-TPT is an n-type semiconductor with a LUMO value of −0.70 V (vs NHE) and a HOMO value of 1.39 V. The transient photocurrent responses with strong current density cycles with visible light indicated CoMo-TPT has a high photochemical activity. The lower resistance indicated that CoMo-TPT has a higher efficiency of photoinduced electron and hole separation. CoMo-TPT displayed a high efficiency of 99% and a selectivity of 97.3% in photocatalytic oxidation of sulfides by utilizing in situ-generated 1 O 2 through a tandem process of formation of H 2 O 2 from O 2 followed by catalyzed disproportionation of H 2 O 2 .

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Ternary supramolecular system for photocatalytic oxidation with air by consecutive photo-induced electron transfer processes

Cited by 68 publications

References 60 publications

POM@MOF Hybrids: Synthesis and Applications

POM@MOF Hybrids: Synthesis and Applications

Characterization of polyoxometalate/polymer photo‐composites: A toolbox for the photodegradation of organic pollutants

An Isopolymolybdate-Incorporated Metal–Organic Framework with Sulfite Oxidase-Mimicking Activity for Photocatalytic Oxidation of Sulfides Utilizing In Situ-Generated Singlet Oxygen

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