A New Steady and Water-insoluble Polytungstate:Synthesis,Structure,Characterizations and Photocataly

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Polyoxometalate(POM)-based materials universally have some inherent flaws, including low recovery, metastability, solubility, etc., which may restrict their practical applications. Modifying the materials with organic-inorganic hybrid complexes is one of the most effective approaches to overcome these deficiencies. Under hydrothermal conditions, a new WellsDawson-type polytungstate modified Cd-complex, [Cd(phen)3]3[W_(18)O_(54)(PO_4)_2]·3H_2O(1, phen = 1,10-phenanthroline(C_(12)N_2H_8)), has been synthesized by selecting Cd~(2+) coordinated phen and employing stepwise self-assembly plans. The compound shows good stability and waterinsolubility under normal circumstances. Experiments demonstrate that compound 1 has ideal catalytic activity in the degradation reaction of rhodamine B(Rh B) under ultraviolet(UV)-light and oxidant H_2O_2 conditions. Detailed characterizations including X-ray single-crystal diffraction(XRD), Powder X-ray diffraction(PXRD), elemental analysis, energy-dispersive X-ray spectroscopy(EDS) analyses, Fourier transform infrared spectroscopy(FT-IR), UV-Vis-NIR diffuse reflection spectrum(DRS) and XPS spectrum are presented herein. The electrochemical(cyclic voltammetry(CV)) and photocatalytic properties of 1 have also been studied. Polyoxometalate (POM) -based materials universally have some inherent flaws, including low recovery, metastability, solubility, etc., which may restrict their practical applications. Modifying the materials with organic-inorganic hybrid complexes is one of the most effective approaches to overcome these deficient. Under hydrothermal conditions, a new Wells Dawson-type polytungstate modified Cd-complex, [Cd (phen) 3] 3 [W 18 O 54 (PO 4) 2] 3H 2 O (1, phenanthroline (C_ (12) N_2H_8)), has been synthesized by selecting d ~ (2+) coordinated phen and employing stepwise self-assembly plans. activity in the degradation reaction of rhodamine B (Rh B) under ultraviolet (UV) -light and oxidant H 2 O 2 conditions. Detailed characterizations including X-ray single-crystal diffraction (XRD) energy-dispers The electrochemical (cyclic voltammetry (CV)) and photocatalytic properties (i) X-ray spectroscopy (EDS) analyzes, Fourier transform infrared spectroscopy (FT-IR), UV-Vis-NIR diffuse reflection spectrum (DRS) and XPS spectrum are presented herein. of 1 have also been studied.
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