Abstract
This work describes the tailored design, green synthesis and characterization of noble metal (Pt, Ag and Au) nanoparticles (NPs) using Sapinduss Mukkorossi fruit extract (SMFE) and its signal NP collision signal response, based on the principle of the electrocatatlytic amplication (EA) method. Here, the SMFE can act as both the reducing and the capping agent for the fabrication of noble nanometals. The SMFE-capped NPs was available for the observation of a single NP collision signal. Two general types of current response were observed: a staircase current response for the Pt or Au NPs, and a blip/spike current response for Ag NPs. These results demonstrated that the eco-friendly synthesized SMFE-capped NPs maintained their electrocatalytic activity, therefore they can be used for the single NP experiments and place an arena for future biosensing applications.
Highlights
With the growing need to minimize or eliminate the use of environmental-risk substances, as the green chemistry principles describe, the synthesis of noble metal nanoparticles (NPs) using biological entities has received increasing attention in the last decade [1]
The bioreduction of Au(III) and Ag(I) by using Sapinduss Mukkorossi fruit extract (SMFE) have been confirmed through UV−visible measurements and carried out to identify the formation of ANuanoamnadterAiagls N20P19s, 9m, 1e6a9s5ured in the spectral range of 200–800 nm (Figure 1)
A new biosynthesis has been demonstrated for the electrochemical detection of single NP collision events of the Pt, Au and Ag NPs onto the Au or C-Fiber UME
Summary
With the growing need to minimize or eliminate the use of environmental-risk substances, as the green chemistry principles describe, the synthesis of noble metal nanoparticles (NPs) using biological entities has received increasing attention in the last decade [1]. Due to their unique physical and chemical properties, metal NPs have attracted tremendous interest in modern chemical research, and have found applications in a wide variety of fields, such as photochemistry, electrochemistry, optics and catalysis. The UME is a working electrode with the geometric dimensions of micrometer, to provide the means to contact with individual NPs suspended in the solution
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