Engr. Edgar Clyde R. Lopez and Dr. Jem Valerie D. Perez presented their researches in the 2nd International Conference on Material Engineering Research (ICMER 2019) which was held last May 17-19, 2019 at Incheon National University, Incheon, South Korea.
Lopez presented his work entitled "Photoelectrocatalytic Degradation of C.I. Basic Blue 9 using Silver-doped Titanium Dioxide Nanotubes," which detailed the process of treating textile dyes in wastewater using photoelectrocatalysis. In this work, he synthesized titanium dioxide nanotubes by anodization technique which is known to produce highly-ordered nanoporous nanostructures through the balance between anodic oxidation and oxide etching using fluoride ions. He added silver dopant to modify the electronic and optical structure of the titanium dioxide hence rendering them photo-active in the visible light region. This finds great importance in commercializing the photoelectrocatalytic treatment of wastewater. This will be published in the peer-reviewed journal, Key Engineering Materials.
The study was done with his undergraduate collaborators namely Mr. Vince Aron F. Cleofe, Ms. Rio Ysabel A. Cañal, and Mr. Kristoffer Francis P. Boado, and in collaboration with Dr. Jem Valerie D. Perez, research adviser.
Meanwhile, Perez was awarded with the Best Paper Award, besting all other participants in the conference, for her work entitled "Humic Acid Functionalized -Silver Nanoparticles as Nanosensor for Colorimetric Detection of Copper (II) Ions in Aqueous Solution." The study focused on the development of a novel nanosensor assay for detecting copper ions in water. In this work, humic acid was used as a functionalizing and stabilizing agent during the synthesis of silver nanoparticles by borohydride reduction technique. The developed assay was found to be selective towards copper ions compared to other metal ions typically found in drinking water. This is of prime importance towards achieving point-of-need detection of heavy metals in water which is currently heavily-reliant on the use of very expensive instruments. This will be published in the peer-reviewed journal, Key Engineering Materials.
The study was done with his undergraduate collaborators namely Mr. Michael Angelo Zafra, Mr. Emil David D. Villena, and Mr. Jon Nyner L. Gavan, and in collaboration with Engr. Edgar Clyde R. Lopez, PhD student and Engr. Francis Eric P. Almaquer, assistant professor from the University of the Philippines - Visayas.
Over hundred twenty-two participants in the field of materials science and chemical engineering from various universities across the world joined the conference. Among the invited keynote speakers were Prof. M. Kaloop (Mansoura University, Egypt) anud Prof. I. Mansouri (Birjand University, Iran). Their talks centered on the latest advances in materials engineering.