Salcedo, Morabe, Sevilla win NAST outstanding paper award for cadmium(II) detection

On July 14, 2022, the research team of Asst. Prof. Alan Rodelle M. Salcedo, PhD, Ms. Nova Carisa F. Morabe, and Academician Professor Emeritus Fortunato B. Sevilla III, PhD received the Outstanding Scientific Paper Award from the National Academy of Science and Technology. They received the distinction for the paper “Colometric detection of Cadmium(II) using Glutathione-Capped Gold Nanoparticles.”

The team, who is part of the Sensors research interest group of the Research Center for the Natural and Applied Sciences, published the work in Acta Manilana, the official journal of the RCNAS. According to the abstract, the “glutathione-capped gold nanoparticles (GSH-AuNPs) were prepared by chemical reduction of HAuCl4 using glutathione (GSH) as the capping agent and NaBH4 as the reducing agent. GSH-AuNPs were characterized by UV-Vis spectroscopy, IR spectroscopy, and transmission electron microscopy (TEM). The pH value of the synthesized GSH-AuNPs solution was also measured to be 7.20. A colorimetric method for Cd2+ was developed based on the aggregation of GSH-AuNPs induced by its interaction with Cd2+, which is also exhibited as a red to blue color change.”

The detection method showed “good analytical performance such as low cost, sensitivity, rapidity, and visual detection.” The team concluded that “the GSH-AuNPs-based method described here demonstrates potential application for the detection of Cd2+ in actual water sample for assessment and monitoring purpose.”

The paper can be accessed here: 

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