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Explain the redox reaction in turkevish method of synthesizing gold nano particles
Accepted Answer
The Turkevich method for synthesizing gold nanoparticles involves a redox reaction between gold(III) chloride (AuCl3) and sodium citrate. The reaction can be represented as follows:
2AuCl3 + 3Na3C6H5O7 + H2O → 2Au + 6NaCl + 3C6H5O7H3
In this reaction, gold(III) ions (Au3+) are reduced to gold atoms (Au), while citrate ions (C6H5O73-) are oxidized to produce carbon dioxide (CO2) and water (H2O). The reaction is initiated by the addition of sodium borohydride (NaBH4), which acts as a reducing agent.
The Turkevich method is a versatile and widely used method for synthesizing gold nanoparticles with controlled size and shape. The reaction conditions, such as the concentration of reactants and the temperature, can be adjusted to produce nanoparticles with different properties.
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