Rational Design of Co(II)‐Pyridine‐Decorated Reduced Phosphomolybdate Photocatalysts for Efficient Aniline Oxidation under Mild Conditions

Chinese Journal of Chemistry, Год журнала: 2024, Номер 42(23), С. 2970 - 2978

Опубликована: Авг. 21, 2024

Comprehensive Summary The conversion of aniline to nitrosobenzene (NSB), a key step in the synthesis important chemicals, demands development environmentally friendly photocatalysts that operate under mild conditions. This process is driven by need for sustainable methods, given toxic nature and its central role production dyes, pharmaceuticals, agricultural chemicals. study reports on three reduced phosphomolybdate compounds with Co(II) centers polypyridine ligands, which show great potential as oxidation NSB. uses 30% H 2 O oxidant sole catalysts, achieving high rates selectivity without additional additives or photosensitizers. integration multidentate ligands {P 4 Mo 6 } clusters significantly reduces band gap, facilitating visible‐light‐driven photocatalysis. adsorption interaction between coordinated water molecules Co ions found enhance rate aniline, finding supported DFT analyses.

Язык: Английский

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Controlled Assembly of a Dawson-like Antimoniotungstate-Supported Trefoil-type Trimer with Good Proton Conductivity Performance

Inorganic Chemistry, Год журнала: 2024, Номер 63(5), С. 2363 - 2369

Опубликована: Янв. 24, 2024

With the excellent properties of POM in field proton conductivity, preparation POM-based proton-conductive materials has burst into life. Herein, an unprecedented Sb-templated all-inorganic trimer Na

Язык: Английский

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Difunctional POM-based artificial leaf with directed charge transfer to promote photosynthetic overall reaction

Chemical Engineering Journal, Год журнала: 2024, Номер 496, С. 153637 - 153637

Опубликована: Июль 14, 2024

Язык: Английский

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Dimeric four tartaric acid-bridged tetra-Zr-incorporated arsenotungstate showing decent proton conduction

Rare Metals, Год журнала: 2024, Номер unknown

Опубликована: Сен. 16, 2024

Язык: Английский

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Enhanced catalytic oxidation of aniline to azobenzene using Ultrasound-Assisted thermocatalysis with a Phosphomolybdate-Based heterogeneous catalyst

Separation and Purification Technology, Год журнала: 2025, Номер unknown, С. 132687 - 132687

Опубликована: Март 1, 2025

Язык: Английский

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Dimeric Organic–Inorganic Hybrid Zr-Substituted Antimonotungstate-Featured Photochromic Responses

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Апрель 20, 2025

Photochromic materials are increasingly attracting attention for their potential applications in smart devices. Here, a novel organic-inorganic hybrid Zr-containing polyoxometalate [H2N(CH3)2]10H8[Zr(DL-tart)2(SbW17ZrO58)2]·36H2O (DL-tartH4 = dl-Tartaric Acid) (1) was synthesized. The dimeric polyanion of 1 contains two Dawson-like {SbW17ZrO58}7- subunits bridged by one {Zr(DL-tart)2}4- connector. Interestingly, compound exhibits rapid photochromic response with half-life (t1/2) 6.62 s, good reversibility, and an easy fading process air environment. Notably, also retains its behavior upon exposure to visible light irradiation.

Язык: Английский

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Advances in polyoxometalate-based electrochemical sensors in the last three years

Analytical Methods, Год журнала: 2024, Номер 16(30), С. 5133 - 5145

Опубликована: Янв. 1, 2024

Typical polyoxometalate-based electrochemical sensors and their applications in environmental monitoring, food safety biomedicine the last three years are summarized this review.

Язык: Английский

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Homogeneous Tungsten Catalysis for Controllable Selective Oxidation of Anilines via the W(O)(η²-O₂)₂ Intermediate

ACS Catalysis, Год журнала: 2024, Номер 14(16), С. 12372 - 12384

Опубликована: Авг. 5, 2024

The controllable selective oxidation of anilines to metastable and valuable products mediated by a single catalyst represents long-standing synthetic challenge due the numerous active species generated in situ their intricate interactions. This study introduces synthesis μ-oxo-bridged dinuclear tungsten complex [W(O)2(Cl)4-MeObpy]2O (W-1), which demonstrates selectivity anilines, enabling precise production various azoxybenzenes, symmetric/unsymmetric azobenzenes, nitrosobenzenes, as well nitrobenzenes. marks instance molecular being employed for four distinct through aniline oxidation. A combination kinetic measurements stoichiometric experiments unveils that original individual among many can potentially arise is governed conversion intermediates N-phenylhydroxylamine nitrosobenzene into specific procedures. peroxotungstate [W(O2)2(O)4-MeObpy] (W-2) was isolated reaction W-1 with H2O2. combined experimental results density functional theory (DFT) investigations unraveled W-2 critical generating both key providing H-bonding network catalytic systems.

Язык: Английский

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Polyoxovanadates modified SnO ₂ electron transport layer for perovskite photodetectors

Polyoxometalates, Год журнала: 2024, Номер 4(1), С. 9140076 - 9140076

Опубликована: Авг. 9, 2024

As an electron transport layer (ETL) material, SnO₂ is widely used in perovskite photodetectors. The matched energy level alignment between and of significance to carrier transport. Polyoxovanadates (POVs), as a semiconductor-like molecule, have good redox properties excellent optical properties, which can regulate the band structure SnO₂. Here, K₅MnV₁₁O₃₂·10H₂O (MnV₁₁), K₇MnV₁₃O₃₈·18H₂O (MnV₁₃), (NH₄)₈[V₁₉O₄₁(OH)₉]·11H₂O (V₁₉), K₁₀[V₃₄O₈₂]·20H₂O (V₃₄) modified colloidal solution. test demonstrates that conduction potential (E_CB) MnV₁₃ increased from -4.43 eV -4.03 eV, more with perovskite. It beneficial extraction transmission photogenerated carriers. X-ray diffraction (XRD) shows POVs has better crystallinity. Scanning microscope (SEM) characterization grain size increases 580 nm after modified. final results show photodetector best efficiency. photocurrent 26 μA 80 μA. Its stability good. After 720 hours, normalized current values unencapsulated devices on MnV₁₃@SnO₂ substrate still maintain than 70% initial values. This work introducing into photodetectors strategy optimize performance photovoltaic devices.

Язык: Английский

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First Photocatalytic Synthesis of Cyclic Carbonates from CO₂ Using Bromide-Functionalized Polyoxometalate without Additional Cocatalyst

ACS Sustainable Chemistry & Engineering, Год журнала: 2024, Номер 12(44), С. 16396 - 16408

Опубликована: Окт. 23, 2024

Язык: Английский

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