In this work, we present a novel process for fabrication of a silver‐nanoparticle‐modified electrode using silver ion implantation. This method is facile, low‐cost and environmental friendly without the use of any other chemicals. The obtained AgNPs on the electrode surface, which were free from any reagents surrounding or binding to them, showed prominent electrocatalytic activity towards the oxidation of glucose, leading to a nonenzymatic glucose sensor with a wide linear range and a detection limit of 0.5 µM. In addition, the modified electrode also exhibited acceptable reproducibility and long‐term stability.
We describe direct analysis of self-assembled monolayers (SAMs) on copper surfaces by low temperature plasma (LTP) mass spectroscopy (MS). Two kinds of SAMs formed from n-dodecylmercaptan (NDM) and l-phenyl-5-mercaptotetrazole (PMTA) were prepared on copper by spontaneous chemisorption. With the LTP probe, desorption and ionization of the SAMs was easily achieved, and the ions produced were introduced into MS for analysis. Aiming for an evaluation of the reliability of LTP-MS, a comparative study of our method and the traditional method of cyclic voltammetry (CV) showed a correlation coefficient higher than 0.97. In addition, a rough, simple procedure for imaging of the distribution of the molecules adsorbed on copper surface was presented. The study supplied a rapid and simple method for direct investigation of SAMs on copper.
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