FeII–FeIII hydroxysalt green rusts (GR), {FeII2/3FeIII1/3(OH)2}(1/3)+⋅{[(1/3)/n]An−⋅∼(m/n)H2O}(1/3)−, are prepared by oxidising a Fe(OH)2 precipitate in presence of anions An−(Cl−,SO42−,CO32−). Electrode potential Eh and pH recorded during ...
The precipitate of the complex was filtered, washed with water, then with hot methanol and finally dried in vacuum desiccator over anhydrous CaCl2 (yield 40-45%, scheme 2). Synthesis and Spectral Characterization of Schiff Base Cr(III), Mn(III), and Fe(III) 2257 Scheme 2. Synthesis of ...
A 2M NaOH solution was added to this reaction mixture to attain a pH of 12, and a deep brown precipitate was formed immediately. The precipitate was centrifuged, and the acquired solid material was washed multiple times with distilled water, followed by ethanol until the pH reached 7. The ...
These particles display the characteristic colour of β-FeOOH (Figure F1). The margins of the Schiller sheets have a purple colour (Figure F1). This colour is a characteristic of Na incorporation in the lattice (see Appendix H). This corrosion structuring in saline water is demonstrated for ...
简称卤素 vigorous 剧烈的 hydrated halide ion 水合卤素离子 Chapter 6 a cream precipitate 米黄色沉淀 aerosol propellant 气溶胶喷射剂 inert 惰性的 iodine in alcohol 碘酒 iodine is a shiny, grey-black crystalline ammonia solution 氨水 solid which sublimes to a purple vapour 碘 anomalous properties ...
(Fe3O4) was prepared by co-precipitation method under nitrogen gas. Prepare 2:1 M solution of Fe3+and Fe2+ions and then an ammonia solution was added to it to raise pH up to 11 at a temperature of 70 °C and continue stirring for four hours. The resulting black precipitate was ...
Before being dried at 60 ◦C under decreased pressure, the precipitate was washed several times with ethanol and DI water. 2.3. Synthesis of rGO/Fe3O4 Composite A one-pot hydrothermal approach was employed to make the rGO/Fe3O4 composites, which used sodium dodecylbenzene sulfonate (SDBS)...
The separation of deposited precipitate (Fe3O4 NPs) was conducted by a ring magnet, and decantation was performed to remove the unwanted foreign particles. The obtained product was finally dried at 70 ◦C in an oven [38]. It is noteworthy that the overall protocol was repeated as a ...