1. School of Environment and EnergySouth China University of Technology Guangzhou 510006 P. R. China
2. Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control (SCUT)South China University of Technology Guangzhou 510006 P. R. China
3. National Engineering Laboratory for VOCs Pollution Control Technology and EquipmentSouth China University of Technology Guangzhou 510006 P. R. China