نتایج جستجو برای: prussian blue complex
تعداد نتایج: 850512 فیلتر نتایج به سال:
Radioactive cesium (137Cs) has inevitably become a human concern due to exposure from nuclear power plants and nuclear accident releases. Many efforts have been focused on removing cesium and the remediation of the contaminated environment. In this study, we elucidated the ability of Prussian blue-coated magnetic nanoparticles to eliminate cesium from radioactive contaminated waste. Thus, the o...
The photo-induced charge transfer in four series of Prussian blue (PB) analogues was studied from photoacoustic spectra. In cobalticyanides the observed signals were assigned to a metal-to-ligand charge transfer, which appears as a shoulder below 450 nm, and to d-d transitions for Co(II), Ni(II) and Cu(II) complex salts. No evidence of metal-to-metal charge transfer was observed for this series...
Prussian Blue (ferric hexacyanoferrate(II)) was discovered accidentally by Johann Jacob Diesbach (1) and Johann Konrad Dippel (2) in Berlin in 1706 (3). As the first synthetic pigment, Prussian Blue received its name from the country in which its discovery occurred. It revolutionized the use of the color blue in artwork because it was less expensive and/or more stable than other blue pigments o...
in this research, a fast colorimetric method for the detection of 4-phenylthiosemicarbazid (4-ptsc) in environmental samples, is reported for the first time. semicarbazide compounds have been used as pesticides or fungicides in agriculture and for chemical synthesis in industrial processes. with this method, one or the total amount of semicarbazide in real samples can be detected within 6-7 min...
Prussian blue (PB) and its analogues (PBAs) are promising coordination polymers (CPs) with an adjustable composition open framework. Nonetheless, their intrinsic electrochemical activity electrical conductivity poor, which hinder applications in energy conversion storage. In catalytic applications, metal compounds derived from PB/PBAs have a lot of advantages, such as outstanding stability, sel...
The aim of this study was to investigate the effect of storage at -4 0 C on the ascorbic acid (vitamin C) content of grapes (Vitis vinifera) for 1, 2, 5 and 8 months. A sensitive UV-VIS spectrometric method based on Prussian Blue reaction was applied for vitamin C determination and some kinetic calculations were presented. The varieties of red and white grapes used were from Murfatlar vineyard:...
Three-dimensional hierarchical Prussian blue composed of ultrathin nanosheets was successfully synthesized by employing a self-aggregation and oriented attachment strategy. The unique structure highly increases the exposure of micropores and metal sites of Prussian blue to guests, thus significantly enhancing its hetero-catalysis and adsorption properties compared to cubic and commercial counte...
We utilized a novel strategy, hierarchical structuring, to enhance the catalytic activity of coordination polymers. Hierarchical Prussian white crystals with hollow structures and kinked surfaces were synthesized by using a self-aggregation and etching strategy. The hierarchical structure significantly enhanced the catalytic activity of Prussian white in the degradation of methylene blue in com...
Comparative reactivities of three diaqua(tetraamine)Co(III) complexes towards hydrolysis of 4-nitrophenyl phosphate was undertaken. The results were contrasted with prussian blue promoted hydrolysis of 4-nitrophenyl phosphate. The tetraamineCobalt(III) complexes accelerated the hydrolytic reaction to varying degrees with the following reactivity order. [(tn)2Co(OH2)2] < [(trpn)Co(OH2)2] < [(tme...
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