Electrochemical Synthesis of Nickel Hydroxide Ni(OH)2 Nanoparticles Solution for Detecting Mercury (Hg)

Yanatra Budi Pramana; Djoko Adi Walujo; Marianus Subandowo; Indah Nurhayati; Fauziatul Fajaroh; Krisyanti Budipramana

doi:10.17977/um0260v5i22021p008

Authors

Yanatra Budi Pramana Department of Industrial Engineering, Faculty of Engineering, University of PGRI Adi Buana Surabaya, Indonesia
Djoko Adi Walujo Department of Industrial Engineering, Faculty of Engineering, University of PGRI Adi Buana Surabaya, Indonesia
Marianus Subandowo Department of Industrial Engineering, Faculty of Engineering, University of PGRI Adi Buana Surabaya, Indonesia
Indah Nurhayati Department of Enviromental Engineering, Faculty of Engineering, University of PGRI Adi Buana Surabaya, Indonesia
Fauziatul Fajaroh Department of Chemistry, Faculty of Mathematics and Science, State University of Malang, Indonesia
Krisyanti Budipramana 4Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Surabaya, Surabaya 60293, Indonesia

DOI:

https://doi.org/10.17977/um0260v5i22021p008

Keywords:

Nanoparticle Ni(OH)2, Electrolysis, Mercury

Abstract

Nickel hydroxide Ni(OH)₂ nanoparticles were used as sensors for mercury (Hg) in water using a UV-Vis
spectrophotometer instrument. The synthesis of Ni(OH)₂ nanoparticles was carried out by electrochemical method using nickel plates as anode and cathode and the process was operated at constant voltage of 25 V for 30 minutes. In this study, 2 variations of the concentration of Ni(OH)₂ nanoparticles were used, namely (5 mL and 4 mL) to detect mercury at concentrations of 10 ppm, 40 ppm, and 50 ppm. Changes in the absorbance value of Ni(OH)₂ nanoparticles will be observed. From the observations, there was a decrease in the absorbance value of Ni(OH)₂ nanoparticles along with the increase in mercury concentration. The decrease in the absorbance value of Ni(OH)₂ nanoparticles is directly proportional to the amount of mercury concentration. The detection limit value was obtained at a volume of 5 mL and 4 mL are 45 ppm, and 35 ppm.