Electrochemical Sensor Based on Black Phosphorus for Antimony Detection Using Dip-Pen Nanolithography: The Role of Dwell Time.

ABSTRACT: Heavy metals, including Sb, are major pollutants with limits on their allowed concentration in drinking water. Therefore, there is a need for sensitive, simple, and portable detection methods for which electrochemical sensors are ideally suited. In this current study, Meta-chemical surfaces are developed for electrochemical sensing by patterning gold electrode surfaces with a mixture of black phosphorus (BP) and polymethyl methacrylate (PMMA) as nanoclusters using dip-pen nanolithography. It is found that the surface-to-volume ratio (S/V), fill factor, and ink composition affect the sensitivity of the sensor for Sb detection. The S/V ratio and fill factor can be altered by the dwell time, which has a complex effect on the limit of detection (varying from 14 to 24 ppb with the changes in th

SUBMITTER: Yadav KK 

PROVIDER: S-EPMC12391652 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature