1. Guangzhou Key Laboratory of Clean Transportation Energy Chemistry, Key Laboratory of Clean Chemistry Technology of Guangdong Regular Higher Education Institutions, School of Chemical Engineering and Light Industry, Guangdong University of Technology, 510006 Guangzhou, P. R. China
2. Waygreen Technologies, Inc., Guangzhou 511441, China
3. School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore