1. Henan Key Laboratory of Polyoxometalate Chemistry, Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R. China
2. Self-Cleaning Research Laboratory, Department of Physics, Raje Ramrao College (Affiliated with
Shivaji University, Kolhapur), Jath 416404, Maharashtra, India
3. Center for Advanced Materials, Qatar University, P.O. Box 2713, Doha, Qatar