Self-assembly of a novel multicomponent polyoxometalate-based tetrahedral supercluster with high catalytic activity for thioether oxidation

Liu, Xiaodong; Xu, Na; Liu, Xiaohui; Ye, Guo; Wang, Xiang

doi:10.1039/d2cc02748h

Cited by 45 publications

(32 citation statements)

References 37 publications

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“…Polyoxometalates (POMs) are a class of anionic inorganic clusters with various structural topologies, − which have attracted extensive attention in various research fields, such as catalysis, , optics, medicine, and magnetism. − Moreover, because POMs are rich in electrons, they can be used as electron donors in the process of induced electron transfer by light, electricity, and heat, which can contribute to the construction of inorganic multiple stimulus discoloration materials . In addition, due to the wide variety of POMs, it will also be beneficial to the popularization of chromic material applications of POMs.…”

Section: Introductionmentioning

confidence: 99%

Polyoxometalate–Viologen Thermochromic Hybrids for Organic Amine Detectors and Memristors with Temperature-Regulating Resistance Switching Characteristics

Tian

et al. 2023

Inorg. Chem.

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There are relatively few reports on the combination of viologen and polyoxometalates (POMs). Herein, we successfully synthesized three viologen−POM-based compounds by in situ transformation of ligands under hydrothermal conditions, namely, {M II (1,4-cby) 2 [H 2 (γ-Mo 8 O 26 )]}•nH 2 O (1: M = Ni, n = 4; 2: M = Co, n = 6), and [Ni II (1,3Isostructural compounds 1 and 2 exhibit two-dimensional (2D) layer structures with POMs as linking nodes, while compound 3 shows a one-dimensional (1D) metal−organic chain with dissociative POM anions. When the temperature increases, compounds 1−3 show good reversible thermochromism properties and also have a fluorescence quenching effect. Moreover, compounds 1−3 can also be used as detectors for organic amines, especially in the atmosphere of ammonia, ethylenediamine, and diethylamine with an obvious discoloration effect. In addition, compound 1 was used as a material for the preparation of memristors with superior properties (distinct temperature-adjusted resistive switching properties). It shows bipolar resistive switching (RS) behavior at different temperatures of 20, 50, and 100 °C. The results show that the 1-based memristor has good thermal stability, which is important for high-temperature environment applications. It also shows that crystalline viologen−POM-based compounds are ideal candidates for making memristors.

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Section: Introductionmentioning

confidence: 99%

Polyoxometalate–Viologen Thermochromic Hybrids for Organic Amine Detectors and Memristors with Temperature-Regulating Resistance Switching Characteristics

Tian

et al. 2023

Inorg. Chem.

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“…Polyoxometalates (POMs) are promising oxidation photocatalysts owing to their high structural and thermal stability and electron and proton transfer/storage capabilities. − Incorporating POMs into MOFs can continuously accept electrons, thus inhibiting photo-generated electron–hole recombination and prolonging the lifetime of excited states . In our previous work, a series of photoactive polyoxometalate-based metal–organic frameworks (POMOFs) were synthesized from Keggin-type polyanions, which displayed great photocatalytic oxidation activity under light irradiation. , The band gap energy ( E g) of POMOFs can be adjusted purposefully by changing the structures and ingredients of POMs.…”

Section: Introductionmentioning

confidence: 99%

“…22−24 Incorporating POMs into MOFs can continuously accept electrons, thus inhibiting photo-generated electron−hole recombination and prolonging the lifetime of excited states. 25 In our previous work, a series of photoactive polyoxometalatebased metal−organic frameworks (POMOFs) were synthesized from Keggin-type polyanions, which displayed great photocatalytic oxidation activity under light irradiation. 26,27 The band gap energy (Eg) of POMOFs can be adjusted purposefully by changing the structures and ingredients of POMs proton-coupled electron redox activity can reversibly accept up to 18 protons and electrons in an aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

Constructing a Photocatalyst for Selective Oxidation of Benzyl Alcohol to Benzaldehyde by Photo-Fenton-like Catalysis

Chen

Zhang

et al. 2023

Inorg. Chem.

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, was prepared by combining a functional photosensitizer N, N′-bis(4-pyridylmethyl)naphthalene diimide (DPNDI), copper(I) ions, and an oxidation catalyst [P 2 W 18 O 62 ] 6− into a single framework via a hydrothermal process. Cu(Ι)W−DPNDI exhibited a stable structure, strong light absorption capacity, a suitable band gap, and photoelectric properties, which provided favorable conditions for photocatalysis. In the confined space, the wellaligned Cu(I) ions and POM polyanions played a synergetic effect in the electrontransfer process and reactive oxygen species generation. By coupling photocatalysis and heterogeneous Fenton-like catalysis, Cu(Ι)W−DPNDI displayed high efficiency for the selective oxidation of aromatic alcohols, with up to >99% selectivity and 75% yield.

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“…Possessing excellent photochemical properties, POMs are regarded as a category of green catalyst for reducing environmental pollution due to their superior oxidability [10] . Nevertheless, their good solubility limited their sustainable recycle utility in practical application, causing POMs could to not become a group of widely applied catalysts [11] . To develop and integrate the advantages of POMs, many approaches have been explored.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Cu‐W Nanoflakes and their Catalytic Performance for the Hydrogenation of 4‐Nitrophenol

et al. 2023

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4‐Nitrophenol (4‐NP) is one of the most common organic pollutants in industrial waste waters due to its solubility and toxicity. The catalytic degradation of 4‐NP to 4‐aminophenol (4‐AP) is an economical and sustainable process, which transfers waste and toxicity to profitable materials. Fabricating metal nanoparticle based efficient heterogeneous catalysts is crucial to treating these kinds of pollutants. Here in, Cu−W nanoflakes (Cu−W NFs) with thin sheet like structure were prepared by a simple one‐pot method by using polyoxometalate as precursor. The Cu−W NFs served in hydrogenation of 4‐NP reaction as catalyst, achieved high conversion with rate constant (k) of 2.584×10−2 s−1. Notably, the sustainable catalyst Cu−W NFs exhibit no significant degradation of catalytic activity over 16 cycles, manifested good durability and high conversion (>91 %). Also, the reduction of potassium ferricyanide can also be catalyzed by Cu−W NFs with high efficiency. This work provided a concise approach for fabricating highly effective catalyst and was expected to be a potential universal method to obtain sustainable competitive catalyst for utility in treating pollution.

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Self-assembly of a novel multicomponent polyoxometalate-based tetrahedral supercluster with high catalytic activity for thioether oxidation

Cited by 45 publications

References 37 publications

Polyoxometalate–Viologen Thermochromic Hybrids for Organic Amine Detectors and Memristors with Temperature-Regulating Resistance Switching Characteristics

Polyoxometalate–Viologen Thermochromic Hybrids for Organic Amine Detectors and Memristors with Temperature-Regulating Resistance Switching Characteristics

Constructing a Photocatalyst for Selective Oxidation of Benzyl Alcohol to Benzaldehyde by Photo-Fenton-like Catalysis

Preparation of Cu‐W Nanoflakes and their Catalytic Performance for the Hydrogenation of 4‐Nitrophenol

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