Prof. Jih-Hsing Chang is a professor and chairman in the Department of Environmental Engineering and Management, Chaoyang University of Technology, Taiwan. His research focuses on photoelectrochemical and nanomaterial-based catalysts for renewable energy, wastewater treatment and contaminated soil remediation. Dr. Mohanraj Kumar obtained his PhD in 2019 from Government Arts College, Tiruvannamalai, India. In 2020, he joined Prof. Jih-Hsing Chang’s group at Chaoyang University of Technology as a postdoctoral fellow. He is currently working on nanostructured materials for water treatment and photoelectrochemical water splitting. Dr. Arpan Kumar Nayak completed his PhD from the Indian Institute of Technology Kharagpur, and now works as an assistant professor at Vellore Institute of Technology, India. He is editor-in-chief for the Journal of Applied Physics and Engineering and associate editor of Nanoscale Reports. His research focuses on the synthesis of various nanostructured materials towards environment and energy applications.