Dr. Hairus Abdullah has been a lecturer and researcher in the Faculty of Technology and Computer Science, Department of Industrial Engineering, Universitas Prima Indonesia, Medan, Indonesia, since 2012. He received his doctoral degree from the Department of Materials Science and Engineering, National Taiwan University of Science and Technology (NTUST), in 2016. During 2015-2021, he published more than 50 scientific SCI papers, majoring in photocatalysis, including hydrogen evolution reaction, hydrogenation of toxic species, antibacterial application, and electrocatalysis. Recently, his works have been extended to the fields of photoelectrochemistry and supercapacitors. The research works have been done in collaboration between the Department of Industrial Engineering and the Department of Materials Science and Engineering, NTUST. In addition, he received World-Class Research (WCR) funding from the Ministry of research and technology of Indonesia in 2019. He was selected as one of the best 500 researchers in Indonesia in 2020. He also served as a reviewer for some journals such as the International Journal of Hydrogen Energy, Chemical Engineering Journal, Materials Chemistry and Physics, Case Studies in Thermal Engineering, ACS publication, and Journal of Electronic Materials.