The reaction principle of iron oxide black

Ferric oxide, chemical formula Fe3O4. Commonly known as magnet, magnet, magnet, black iron, it is a black crystal with magnetic properties, so it is also called magnetic iron oxide. It cannot be read as "ferrous metaferrite" or "iron metaferrite [Fe(FeO2)2]", not a mixture of iron oxide and ferrous oxide, but can be approximately regarded as a mixture of ferrous oxide and iron oxide. compound. This substance is soluble in acid solution, insoluble in water, alkali solution and organic solvents such as ethanol and ether. Natural ferric oxide is insoluble in acid solution, and is easily oxidized to iron oxide (Fe2O3) in the air in a humid state. Usually used as a pigment and polishing agent, it can also be used in the manufacture of audio tapes and telecommunications equipment. What is the reaction principle:

Since 2013, a large number of literatures on the preparation of nano Fe3O4 have emerged, and some new preparation processes have also appeared. Traditional preparation the methods of rice Fe3O4 mainly include precipitation method, hydrothermal (solvothermal) method, micro-emulsion method and sol-gel method. Emerging preparation methods such as micro wave method, pyrolysis carbonyl precursor method, ultrasonic method, air oxidation method, pyrolysis-reduction method, polyol reduction method, etc. are gradually becoming scholars.

hotspots of our research. In related methods for preparing Fe3O4, new surfactants and preparation systems have also made breakthroughs. surface live

Agents are not only limited to SDS, PEG, CTAB, citric acid, oleic acid, etc., but also using NSOCMCS and polyacrylamide as modifiers.useful for reporting. The preparation system also appeared ethanol-water system, n-propanol-water, propylene glycol-water system and so on.

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