Liqun Ye, PhD, is a Professor of Chemistry at China Three Gorges University, Yichang, People’s Republic of China. He has researched and published extensively on nanomaterials in photocatalysis, and has been rated a Highly Cited Scientist by Clarivate Analytics. Dehua Xia, PhD, is a Professor of School of Environmental Science and Technology, Sun Yat-sen University, Guangzhou, People’s Republic of China. He is mainly engaged in the research on environmental microinterface chemical processes and pollution control.