1. CAS Key Laboratory of Renewable Energy Guangzhou P. R. China
2. Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences Guangzhou P. R. China
3. Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development Guangzhou P. R. China
4. R&D Center of Xuyi Attapulgite Applied Technology Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences Xuyi P. R. China