One Functionalized Polyoxovanadates Hybrid Material Based on Arsonic Acid with Highly Effective Catalytic Property of Sulfides

In this work, a novel 4-aminophenylarsonic acid functionalized polyoxovanadates (POVs) hybrid material, namely, (Me2NH2)4 ·[(L)8(H12V16O32)] (H2L = 4-NH2C6H4AsO3H2) POVs 1 was solvothermally synthesized and fully characterized. The results revealed POVs 1 consists of four similar tetranuclear vanadium clusters bridged by eight organic 4-aminophenylarsonic acid ligands. Remarkably, functionalized hybrid POVs 1 was further investigated as a heterogeneous stable catalyst in oxidation of sulfide derivatives, and exhibited high catalytic activities (yields up to 96.7%). Additionally, the functionalized hybrid polyoxovanadates catalyst can be reused without losing activities after three runs cycle.

Synthesis, Crystal Structures, Characterization and Catalytic Property of Copper(II) Complexes Derived from Hydrazone Ligands

A new bromido-coordinated mononuclear copper(II) complex [Cu(HL1)Br2] (1), and a new mononuclear copper(II) complex [CuL2(HL2)]ClO4 · 0.5H2O (2), with the hydrazone ligands 4-tert-butyl-N’-(1-(pyridin-2-yl)ethylidene)benzohydrazide (HL1) and 4-bromo-N’-(pyridin-2-ylmethylene)benzohydrazide (HL2), have been synthesized and structurally characterized by physico-chemical methods and single crystal X-ray determination. X-ray analysis indicates that the Cu atom in complex 1 is in distorted square pyramidal coordination, and that in complex 2 is in octahedral coordination. The catalytic property for epoxidation of styrene by the complexes was evaluated.

Superior Electrocatalytic Activity of Ag doped MnWO4 Microflowers towards Glucose molecules

Herein we report the synthesis of Ag doped MnWO4 material carried out by facile hydrothermal method and its catalytic property towards glucose molecules. The Ag-MnWO4 material is characterized by XRD, SEM and EDX respectively. The morphology of the synthesized material is nanorod like structure and the nanorods are converged with each other constructing microflower structure. The microflowers are uniform and sparsely distributed in all direction. The fabricated Ag-MnWO4 electrode performs huge sensitivity of 17.9 µAµM− 1cm− 2 in the linear range 5-110 µM with response time 8 s. Further, excellent selectivity and acceptable stability of the material are achieved. It is predicted that Ag-MnWO4 material would be a good glucose catalytic material for sensing applications.