1. Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education & Institute of Environmental Research at Greater Bay, Guangzhou University, 510006 Guangzhou, P. R. China
2. Singapore Synchrotron Light Source, National University of Singapore, 117603 Singapore, Singapore
3. KENTECH Institute for Environmental and Climate Technology, Korea Institute of Energy Technology (KENTECH), 58330 Naju, Korea