Gold Nanoparticles and Electrochemical Properties

 


A recent study reveals how organic particles Considerably increased the redox potential of gold nanoparticles. 

Redox is the process by which one molecule is reduced, and another is oxidized. The oxidation and reduction processes are considered complementary and involve electron transfer. The increase measures up to 71 mV.

By Using computer computations And experiments, this new study calculates the necessary role of capping agents in dominating the nanoparticles electrochemical properties And also defines How kinetic properties can affect these reactions. 

The research has experimental uses, already seen in particle distribution, ligand exchange, and progress and areas like electronics, catalyst and drug delivery.  

The study was created at Hebrew University and was published by the journal of the American chemical Society. It divulges how organic nano particles can affect the behavior of gold particles absorbed on surfaces.

The research expand the understanding of how particles absorbed on surfaces react with their environments. The research found that two particles like 2 and 4 mercaptobenzoic acid Can actually have different electrical properties, differing up to 71 mV. (Millivolts)


Some Gold nano particles can stick in very predictable ways. However, researchers found that kinetics or the rate of nanoparticles that are oxidized adds more complications to how they interrelate. 

Scientists learned that gold nanoparticles added to 4-mercaptobenzoic Acid reacted two times as quickly as those with citrate. This shows how the perfect molecules can change how nanoparticles react. 

Prof. Daniel Mandler leading researcher reports, “Our study demonstrates the profound impact that capping agents have on the redox of nanoparticles. This understanding allows us to find two nano particle behavior for specific applications, potentially leading to significant impact and field, ranging from catalyst to drug delivery.” 

By researching gold nanoparticles and their complex  relationship with capping agents, scientists have opened a whole New World for designing and use of gold in nanotechnology in the years to come! 


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