Iron(III) nitrate is easy to deliquescence, and usually exists in the form of nonahydrate Fe(NO3)3·9H2O, forming colorless to lavender crystals. This compound is the trinitrate salt of the aqua complex [Fe(H2O)6]3+. [4] Other hydrates Fe(NO3)3 xH2O, including:

Fe(NO3) 3 dissolves in water to form an acidic solution. What is a chemical equation?

When dissolved in water, Fe(NO 3 ) 3 first ionizes into Fe +3 and NO-3 ions.

The Fe +3 ion then reacts with water to form the hexahydrate ion (III) ion Fe(H 2 O) +36 ;

Fe +3 + 6H 2 O → Fe(H 2 O) +36

The ion is acidic and hydrolyzed in aqueous solution to form hydroxyl iron(III) pentahydrate ion ([Fe(H 2 O) 5 (OH)] +2 ), releasing protons to form hydronium ion (H 3 O + ), presenting a solution acidic;-

Fe(H 2 O) +36 + H 2 O → [Fe(H 2 O) 5 (OH)] +2 + H 3 O +

Fe(NO3)3-Assisted Carbothermal Reduction-Nitridation Method for Large-Scale Synthesis of Si3N4 Nanoribbons from Quartz and Graphite and Their Photoluminescence Properties

Fe(NO3)3 plays a crucial role in promoting the formation of nanobelts in the initial stage. The room temperature photoluminescence spectrum of Si3N4 nanoribbons consists of three emission peaks centered at 413, 437, and 462 nm, suggesting its potential application in optoelectronic nanodevices.

   A method covering both sides of a graphite felt substrate with Fe(NO3)3 catalyst increases nucleation sites and increases product yield. The fabricated Si3N4 nanoribbons were characterized and the growth mechanism was elucidated. Furthermore, the room-temperature photoluminescence (PL) properties of Si3N4 nanobelts were measured under ultraviolet light excitation.

Application of Fe(NO3)3-based Nitrogen Source and Coagulant in Cultivation and Harvest of Thermotolerant Chlorella

On the other hand, the counteranion remains almost completely in the bulk solution; and the concentration increases with each cycle. A clever way to overcome it is to take advantage of its cumulative nature: it uses nitrate as a counter anion, i.e. iron nitrate (Fe(NO3)3) as a coagulant. In this way, the remaining nitrate ions after each harvest and medium reuse cycle can be used as a nitrogen source for the next round of cultivation. In this study, this hypothesis was tested and proven.

In this study, Chlorella sorokiniana was successfully cultured in circulating medium with nitrogen supplied directly by the coagulant Fe(NO3)3.